diff --git a/generators/php/dynamic-snippets/src/EndpointSnippetGenerator.ts b/generators/php/dynamic-snippets/src/EndpointSnippetGenerator.ts
index b713a66f6c9a..1a51101d7153 100644
--- a/generators/php/dynamic-snippets/src/EndpointSnippetGenerator.ts
+++ b/generators/php/dynamic-snippets/src/EndpointSnippetGenerator.ts
@@ -321,16 +321,24 @@ export class EndpointSnippetGenerator {
         auth: FernIr.dynamic.BasicAuth;
         values: FernIr.dynamic.BasicAuthValues;
     }): NamedArgument[] {
-        return [
-            {
+        // usernameOmit/passwordOmit may exist in newer IR versions
+        const authRecord = auth as unknown as Record<string, unknown>;
+        const usernameOmitted = !!authRecord.usernameOmit;
+        const passwordOmitted = !!authRecord.passwordOmit;
+        const args: NamedArgument[] = [];
+        if (!usernameOmitted) {
+            args.push({
                 name: this.context.getPropertyName(auth.username),
                 assignment: php.TypeLiteral.string(values.username)
-            },
-            {
+            });
+        }
+        if (!passwordOmitted) {
+            args.push({
                 name: this.context.getPropertyName(auth.password),
                 assignment: php.TypeLiteral.string(values.password)
-            }
-        ];
+            });
+        }
+        return args;
     }
 
     private getConstructorEnvironmentArg({
diff --git a/generators/php/sdk/src/root-client/RootClientGenerator.ts b/generators/php/sdk/src/root-client/RootClientGenerator.ts
index a35d9b8075b8..b1f82e648fd9 100644
--- a/generators/php/sdk/src/root-client/RootClientGenerator.ts
+++ b/generators/php/sdk/src/root-client/RootClientGenerator.ts
@@ -355,26 +355,25 @@ export class RootClientGenerator extends FileGenerator<PhpFile, SdkCustomConfigS
                 const basicAuthSchemes = this.context.ir.auth.schemes.filter(
                     (s): s is typeof s & { type: "basic" } => s.type === "basic"
                 );
-                if (basicAuthSchemes.length > 0) {
+                const resolvedBasicAuthSchemes = basicAuthSchemes
+                    .map((scheme) => this.resolveBasicAuthScheme(scheme))
+                    .filter((resolved) => resolved != null);
+                if (resolvedBasicAuthSchemes.length > 0) {
                     const isAuthOptional = !this.context.ir.sdkConfig.isAuthMandatory;
-                    for (let i = 0; i < basicAuthSchemes.length; i++) {
-                        const basicAuthScheme = basicAuthSchemes[i];
-                        if (basicAuthScheme == null) {
+                    const needsControlFlow = isAuthOptional || resolvedBasicAuthSchemes.length > 1;
+                    for (let i = 0; i < resolvedBasicAuthSchemes.length; i++) {
+                        const resolved = resolvedBasicAuthSchemes[i];
+                        if (resolved == null) {
                             continue;
                         }
-                        const usernameName = this.context.getParameterName(basicAuthScheme.username);
-                        const passwordName = this.context.getParameterName(basicAuthScheme.password);
-                        if (isAuthOptional || basicAuthSchemes.length > 1) {
-                            const controlFlowKeyword = i === 0 ? "if" : "else if";
-                            writer.controlFlow(
-                                controlFlowKeyword,
-                                php.codeblock(`$${usernameName} !== null && $${passwordName} !== null`)
-                            );
+                        const { condition, credentialExpr } = resolved;
+                        if (needsControlFlow) {
+                            writer.controlFlow(i === 0 ? "if" : "else if", php.codeblock(condition));
                         }
                         writer.writeLine(
-                            `$defaultHeaders['Authorization'] = "Basic " . base64_encode($${usernameName} . ":" . $${passwordName});`
+                            `$defaultHeaders['Authorization'] = "Basic " . base64_encode(${credentialExpr});`
                         );
-                        if (isAuthOptional || basicAuthSchemes.length > 1) {
+                        if (needsControlFlow) {
                             writer.endControlFlow();
                         }
                     }
@@ -605,8 +604,12 @@ export class RootClientGenerator extends FileGenerator<PhpFile, SdkCustomConfigS
             case "basic": {
                 const username = this.context.getParameterName(scheme.username);
                 const password = this.context.getParameterName(scheme.password);
-                return [
-                    {
+                // When omit is true, the field is completely removed from the end-user API.
+                const usernameOmitted = !!scheme.usernameOmit;
+                const passwordOmitted = !!scheme.passwordOmit;
+                const params: ConstructorParameter[] = [];
+                if (!usernameOmitted) {
+                    params.push({
                         name: username,
                         docs: this.getAuthParameterDocs({ docs: scheme.docs, name: username }),
                         isOptional,
@@ -616,10 +619,12 @@ export class RootClientGenerator extends FileGenerator<PhpFile, SdkCustomConfigS
                             isOptional
                         }),
                         environmentVariable: scheme.usernameEnvVar
-                    },
-                    {
+                    });
+                }
+                if (!passwordOmitted) {
+                    params.push({
                         name: password,
-                        docs: this.getAuthParameterDocs({ docs: scheme.docs, name: username }),
+                        docs: this.getAuthParameterDocs({ docs: scheme.docs, name: password }),
                         isOptional,
                         typeReference: this.getAuthParameterTypeReference({
                             typeReference: STRING_TYPE_REFERENCE,
@@ -627,8 +632,9 @@ export class RootClientGenerator extends FileGenerator<PhpFile, SdkCustomConfigS
                             isOptional
                         }),
                         environmentVariable: scheme.passwordEnvVar
-                    }
-                ];
+                    });
+                }
+                return params;
             }
             case "header": {
                 const name = this.context.getParameterName(scheme.name);
@@ -755,6 +761,46 @@ export class RootClientGenerator extends FileGenerator<PhpFile, SdkCustomConfigS
         return docs ?? `The ${name} to use for authentication.`;
     }
 
+    /**
+     * Resolves a basic auth scheme into its null-check condition and credential expressions,
+     * accounting for omitted username/password fields. Returns undefined if both fields are omitted.
+     */
+    private resolveBasicAuthScheme(
+        scheme: FernIr.AuthScheme & { type: "basic" }
+    ): { condition: string; credentialExpr: string } | undefined {
+        const usernameName = this.context.getParameterName(scheme.username);
+        const passwordName = this.context.getParameterName(scheme.password);
+        const usernameOmitted = !!scheme.usernameOmit;
+        const passwordOmitted = !!scheme.passwordOmit;
+
+        if (usernameOmitted && passwordOmitted) {
+            return undefined;
+        }
+
+        const conditions: string[] = [];
+        if (!usernameOmitted) {
+            conditions.push(`$${usernameName} !== null`);
+        }
+        if (!passwordOmitted) {
+            conditions.push(`$${passwordName} !== null`);
+        }
+
+        // Build a clean credential expression without redundant empty-string concatenation.
+        let credentialExpr: string;
+        if (usernameOmitted) {
+            credentialExpr = `":" . $${passwordName}`;
+        } else if (passwordOmitted) {
+            credentialExpr = `$${usernameName} . ":"`;
+        } else {
+            credentialExpr = `$${usernameName} . ":" . $${passwordName}`;
+        }
+
+        return {
+            condition: conditions.join(" && "),
+            credentialExpr
+        };
+    }
+
     private getRootSubpackages(): FernIr.Subpackage[] {
         return this.context.ir.rootPackage.subpackages
             .map((subpackageId) => {
diff --git a/generators/php/sdk/src/wire-tests/WireTestGenerator.ts b/generators/php/sdk/src/wire-tests/WireTestGenerator.ts
index 0beadd9f0892..52ad85c39df5 100644
--- a/generators/php/sdk/src/wire-tests/WireTestGenerator.ts
+++ b/generators/php/sdk/src/wire-tests/WireTestGenerator.ts
@@ -489,9 +489,13 @@ export class WireTestGenerator {
                 bearer: () => {
                     authParams.push("token: 'test-token'");
                 },
-                basic: () => {
-                    authParams.push("username: 'test-user'");
-                    authParams.push("password: 'test-password'");
+                basic: (basicScheme) => {
+                    if (!basicScheme.usernameOmit) {
+                        authParams.push("username: 'test-username'");
+                    }
+                    if (!basicScheme.passwordOmit) {
+                        authParams.push("password: 'test-password'");
+                    }
                 },
                 header: (header) => {
                     const paramName = this.case.camelSafe(header.name);
diff --git a/generators/php/sdk/versions.yml b/generators/php/sdk/versions.yml
index b24a50dc1cb3..b54d3ce2a567 100644
--- a/generators/php/sdk/versions.yml
+++ b/generators/php/sdk/versions.yml
@@ -1,4 +1,16 @@
 # yaml-language-server: $schema=../../../fern-versions-yml.schema.json
+- version: 2.4.0
+  changelogEntry:
+    - summary: |
+        Support omitting username or password from basic auth when configured via
+        `usernameOmit` or `passwordOmit` in the IR. Omitted fields are removed from
+        the SDK's public API and treated as empty strings internally (e.g., omitting
+        password encodes `username:`, omitting username encodes `:password`). When
+        both are omitted, the Authorization header is skipped entirely.
+      type: feat
+  createdAt: "2026-04-02"
+  irVersion: 66
+
 - version: 2.3.2-rc.0
   changelogEntry:
     - summary: |
diff --git a/seed/php-sdk/basic-auth-pw-omitted/.fern/metadata.json b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/.fern/metadata.json
similarity index 58%
rename from seed/php-sdk/basic-auth-pw-omitted/.fern/metadata.json
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/.fern/metadata.json
index 143d7b896167..d6b2eda38969 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/.fern/metadata.json
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/.fern/metadata.json
@@ -1,7 +1,10 @@
 {
   "cliVersion": "DUMMY",
   "generatorName": "fernapi/fern-php-sdk",
-  "generatorVersion": "local",
+  "generatorVersion": "latest",
+  "generatorConfig": {
+    "enable-wire-tests": true
+  },
   "originGitCommit": "DUMMY",
   "sdkVersion": "0.0.1"
 }
\ No newline at end of file
diff --git a/seed/php-sdk/basic-auth-pw-omitted/.github/workflows/ci.yml b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/.github/workflows/ci.yml
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/.github/workflows/ci.yml
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/.github/workflows/ci.yml
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/.gitignore b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/.gitignore
new file mode 100644
index 000000000000..31a1aeb14f35
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/.gitignore
@@ -0,0 +1,5 @@
+.idea
+.php-cs-fixer.cache
+.phpunit.result.cache
+composer.lock
+vendor/
\ No newline at end of file
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/README.md b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/README.md
new file mode 100644
index 000000000000..269cd0bb42b1
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/README.md
@@ -0,0 +1,145 @@
+# Seed PHP Library
+
+[![fern shield](https://img.shields.io/badge/%F0%9F%8C%BF-Built%20with%20Fern-brightgreen)](https://buildwithfern.com?utm_source=github&utm_medium=github&utm_campaign=readme&utm_source=Seed%2FPHP)
+[![php shield](https://img.shields.io/badge/php-packagist-pink)](https://packagist.org/packages/seed/seed)
+
+The Seed PHP library provides convenient access to the Seed APIs from PHP.
+
+## Table of Contents
+
+- [Requirements](#requirements)
+- [Installation](#installation)
+- [Usage](#usage)
+- [Exception Handling](#exception-handling)
+- [Advanced](#advanced)
+  - [Custom Client](#custom-client)
+  - [Retries](#retries)
+  - [Timeouts](#timeouts)
+- [Contributing](#contributing)
+
+## Requirements
+
+This SDK requires PHP ^8.1.
+
+## Installation
+
+```sh
+composer require seed/seed
+```
+
+## Usage
+
+Instantiate and use the client with the following:
+
+```php
+<?php
+
+namespace Example;
+
+use Seed\SeedClient;
+
+$client = new SeedClient(
+    username: '<username>',
+    password: '<password>',
+);
+$client->basicAuth->postWithBasicAuth(
+    [
+        'key' => "value",
+    ],
+);
+
+```
+
+## Exception Handling
+
+When the API returns a non-success status code (4xx or 5xx response), an exception will be thrown.
+
+```php
+use Seed\Exceptions\SeedApiException;
+use Seed\Exceptions\SeedException;
+
+try {
+    $response = $client->basicAuth->postWithBasicAuth(...);
+} catch (SeedApiException $e) {
+    echo 'API Exception occurred: ' . $e->getMessage() . "\n";
+    echo 'Status Code: ' . $e->getCode() . "\n";
+    echo 'Response Body: ' . $e->getBody() . "\n";
+    // Optionally, rethrow the exception or handle accordingly.
+}
+```
+
+## Advanced
+
+### Custom Client
+
+This SDK is built to work with any HTTP client that implements the [PSR-18](https://www.php-fig.org/psr/psr-18/) `ClientInterface`.
+By default, if no client is provided, the SDK will use `php-http/discovery` to find an installed HTTP client.
+However, you can pass your own client that adheres to `ClientInterface`:
+
+```php
+use Seed\SeedClient;
+
+// Pass any PSR-18 compatible HTTP client implementation.
+// For example, using Guzzle:
+$customClient = new \GuzzleHttp\Client([
+    'timeout' => 5.0,
+]);
+
+$client = new SeedClient(options: [
+    'client' => $customClient
+]);
+
+// Or using Symfony HttpClient:
+// $customClient = (new \Symfony\Component\HttpClient\Psr18Client())
+//     ->withOptions(['timeout' => 5.0]);
+//
+// $client = new SeedClient(options: [
+//     'client' => $customClient
+// ]);
+```
+
+### Retries
+
+The SDK is instrumented with automatic retries with exponential backoff. A request will be retried as long
+as the request is deemed retryable and the number of retry attempts has not grown larger than the configured
+retry limit (default: 2).
+
+A request is deemed retryable when any of the following HTTP status codes is returned:
+
+- [408](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/408) (Timeout)
+- [429](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/429) (Too Many Requests)
+- [5XX](https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/500) (Internal Server Errors)
+
+Use the `maxRetries` request option to configure this behavior.
+
+```php
+$response = $client->basicAuth->postWithBasicAuth(
+    ...,
+    options: [
+        'maxRetries' => 0 // Override maxRetries at the request level
+    ]
+);
+```
+
+### Timeouts
+
+The SDK defaults to a 30 second timeout. Use the `timeout` option to configure this behavior.
+
+```php
+$response = $client->basicAuth->postWithBasicAuth(
+    ...,
+    options: [
+        'timeout' => 3.0 // Override timeout at the request level
+    ]
+);
+```
+
+## Contributing
+
+While we value open-source contributions to this SDK, this library is generated programmatically.
+Additions made directly to this library would have to be moved over to our generation code,
+otherwise they would be overwritten upon the next generated release. Feel free to open a PR as
+a proof of concept, but know that we will not be able to merge it as-is. We suggest opening
+an issue first to discuss with us!
+
+On the other hand, contributions to the README are always very welcome!
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/composer.json b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/composer.json
new file mode 100644
index 000000000000..ad30960a8764
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/composer.json
@@ -0,0 +1,46 @@
+{
+  "name": "seed/seed",
+  "version": "0.0.1",
+  "description": "Seed PHP Library",
+  "keywords": [
+    "seed",
+    "api",
+    "sdk"
+  ],
+  "license": [],
+  "require": {
+    "php": "^8.1",
+    "ext-json": "*",
+    "psr/http-client": "^1.0",
+    "psr/http-client-implementation": "^1.0",
+    "psr/http-factory": "^1.0",
+    "psr/http-factory-implementation": "^1.0",
+    "psr/http-message": "^1.1 || ^2.0",
+    "php-http/discovery": "^1.0",
+    "php-http/multipart-stream-builder": "^1.0"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "^9.0",
+    "friendsofphp/php-cs-fixer": "3.5.0",
+    "phpstan/phpstan": "^1.12",
+    "guzzlehttp/guzzle": "^7.4"
+  },
+  "autoload": {
+    "psr-4": {
+      "Seed\\": "src/"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "Seed\\Tests\\": "tests/"
+    }
+  },
+  "scripts": {
+    "build": [
+      "@php -l src",
+      "@php -l tests"
+    ],
+    "test": "phpunit",
+    "analyze": "phpstan analyze src tests --memory-limit=1G"
+  }
+}
\ No newline at end of file
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/phpstan.neon b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/phpstan.neon
new file mode 100644
index 000000000000..780706b8f8a2
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/phpstan.neon
@@ -0,0 +1,6 @@
+parameters:
+    level: max
+    reportUnmatchedIgnoredErrors: false
+    paths:
+        - src
+        - tests
\ No newline at end of file
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/phpunit.xml b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/phpunit.xml
new file mode 100644
index 000000000000..718cb50ee175
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/phpunit.xml
@@ -0,0 +1,7 @@
+<phpunit bootstrap="tests/Wire/bootstrap.php">
+    <testsuites>
+        <testsuite name="Test Suite">
+            <directory suffix="Test.php">tests</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/reference.md b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/reference.md
new file mode 100644
index 000000000000..76bf05ae1117
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/reference.md
@@ -0,0 +1,99 @@
+# Reference
+## BasicAuth
+<details><summary><code>$client-&gt;basicAuth-&gt;getWithBasicAuth() -> ?bool</code></summary>
+<dl>
+<dd>
+
+#### 📝 Description
+
+<dl>
+<dd>
+
+<dl>
+<dd>
+
+GET request with basic auth scheme
+</dd>
+</dl>
+</dd>
+</dl>
+
+#### 🔌 Usage
+
+<dl>
+<dd>
+
+<dl>
+<dd>
+
+```php
+$client->basicAuth->getWithBasicAuth();
+```
+</dd>
+</dl>
+</dd>
+</dl>
+
+
+</dd>
+</dl>
+</details>
+
+<details><summary><code>$client-&gt;basicAuth-&gt;postWithBasicAuth($request) -> ?bool</code></summary>
+<dl>
+<dd>
+
+#### 📝 Description
+
+<dl>
+<dd>
+
+<dl>
+<dd>
+
+POST request with basic auth scheme
+</dd>
+</dl>
+</dd>
+</dl>
+
+#### 🔌 Usage
+
+<dl>
+<dd>
+
+<dl>
+<dd>
+
+```php
+$client->basicAuth->postWithBasicAuth(
+    [
+        'key' => "value",
+    ],
+);
+```
+</dd>
+</dl>
+</dd>
+</dl>
+
+#### ⚙️ Parameters
+
+<dl>
+<dd>
+
+<dl>
+<dd>
+
+**$request:** `mixed` 
+    
+</dd>
+</dl>
+</dd>
+</dl>
+
+
+</dd>
+</dl>
+</details>
+
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/snippet.json b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/snippet.json
new file mode 100644
index 000000000000..e69de29bb2d1
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/BasicAuth/BasicAuthClient.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/BasicAuth/BasicAuthClient.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/BasicAuth/BasicAuthClient.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/BasicAuth/BasicAuthClient.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/BaseApiRequest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/BaseApiRequest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/BaseApiRequest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/BaseApiRequest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/HttpClientBuilder.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/HttpClientBuilder.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/HttpClientBuilder.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/HttpClientBuilder.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/HttpMethod.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/HttpMethod.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/HttpMethod.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/HttpMethod.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/MockHttpClient.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/MockHttpClient.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/MockHttpClient.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/MockHttpClient.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/RawClient.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/RawClient.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/RawClient.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/RawClient.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/RetryDecoratingClient.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/RetryDecoratingClient.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Client/RetryDecoratingClient.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Client/RetryDecoratingClient.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonApiRequest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonApiRequest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonApiRequest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonApiRequest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonDecoder.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonDecoder.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonDecoder.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonDecoder.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonDeserializer.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonDeserializer.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonDeserializer.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonDeserializer.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonEncoder.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonEncoder.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonEncoder.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonEncoder.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonProperty.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonProperty.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonProperty.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonProperty.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonSerializableType.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonSerializableType.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonSerializableType.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonSerializableType.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonSerializer.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonSerializer.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/JsonSerializer.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/JsonSerializer.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/Utils.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/Utils.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Json/Utils.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Json/Utils.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Multipart/MultipartApiRequest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Multipart/MultipartApiRequest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Multipart/MultipartApiRequest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Multipart/MultipartApiRequest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Multipart/MultipartFormData.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Multipart/MultipartFormData.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Multipart/MultipartFormData.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Multipart/MultipartFormData.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Multipart/MultipartFormDataPart.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Multipart/MultipartFormDataPart.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Multipart/MultipartFormDataPart.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Multipart/MultipartFormDataPart.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Types/ArrayType.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Types/ArrayType.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Types/ArrayType.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Types/ArrayType.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Types/Constant.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Types/Constant.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Types/Constant.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Types/Constant.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Types/Date.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Types/Date.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Types/Date.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Types/Date.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Core/Types/Union.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Types/Union.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Core/Types/Union.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Core/Types/Union.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Errors/Types/UnauthorizedRequestErrorBody.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Errors/Types/UnauthorizedRequestErrorBody.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Errors/Types/UnauthorizedRequestErrorBody.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Errors/Types/UnauthorizedRequestErrorBody.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Exceptions/SeedApiException.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Exceptions/SeedApiException.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Exceptions/SeedApiException.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Exceptions/SeedApiException.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Exceptions/SeedException.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Exceptions/SeedException.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Exceptions/SeedException.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Exceptions/SeedException.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/SeedClient.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/SeedClient.php
similarity index 92%
rename from seed/php-sdk/basic-auth-pw-omitted/src/SeedClient.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/SeedClient.php
index b94c5065f3ed..6707c81c9b88 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/src/SeedClient.php
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/SeedClient.php
@@ -31,7 +31,6 @@ class SeedClient
 
     /**
      * @param string $username The username to use for authentication.
-     * @param string $password The username to use for authentication.
      * @param ?array{
      *   baseUrl?: string,
      *   client?: ClientInterface,
@@ -42,7 +41,6 @@ class SeedClient
      */
     public function __construct(
         string $username,
-        string $password,
         ?array $options = null,
     ) {
         $defaultHeaders = [
@@ -51,7 +49,7 @@ public function __construct(
             'X-Fern-SDK-Version' => '0.0.1',
             'User-Agent' => 'seed/seed/0.0.1',
         ];
-        $defaultHeaders['Authorization'] = "Basic " . base64_encode($username . ":" . $password);
+        $defaultHeaders['Authorization'] = "Basic " . base64_encode($username . ":");
 
         $this->options = $options ?? [];
 
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/Utils/File.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Utils/File.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/src/Utils/File.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/Utils/File.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example0/snippet.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example0/snippet.php
similarity index 88%
rename from seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example0/snippet.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example0/snippet.php
index f17c29ac0c45..70426907841c 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example0/snippet.php
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example0/snippet.php
@@ -6,7 +6,6 @@
 
 $client = new SeedClient(
     username: '<username>',
-    password: '<password>',
     options: [
         'baseUrl' => 'https://api.fern.com',
     ],
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example1/snippet.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example1/snippet.php
similarity index 88%
rename from seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example1/snippet.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example1/snippet.php
index f17c29ac0c45..70426907841c 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example1/snippet.php
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example1/snippet.php
@@ -6,7 +6,6 @@
 
 $client = new SeedClient(
     username: '<username>',
-    password: '<password>',
     options: [
         'baseUrl' => 'https://api.fern.com',
     ],
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example2/snippet.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example2/snippet.php
similarity index 88%
rename from seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example2/snippet.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example2/snippet.php
index f17c29ac0c45..70426907841c 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example2/snippet.php
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example2/snippet.php
@@ -6,7 +6,6 @@
 
 $client = new SeedClient(
     username: '<username>',
-    password: '<password>',
     options: [
         'baseUrl' => 'https://api.fern.com',
     ],
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example3/snippet.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example3/snippet.php
similarity index 90%
rename from seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example3/snippet.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example3/snippet.php
index 379913d20cec..50c374428362 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example3/snippet.php
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example3/snippet.php
@@ -6,7 +6,6 @@
 
 $client = new SeedClient(
     username: '<username>',
-    password: '<password>',
     options: [
         'baseUrl' => 'https://api.fern.com',
     ],
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example4/snippet.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example4/snippet.php
similarity index 90%
rename from seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example4/snippet.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example4/snippet.php
index 379913d20cec..50c374428362 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example4/snippet.php
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example4/snippet.php
@@ -6,7 +6,6 @@
 
 $client = new SeedClient(
     username: '<username>',
-    password: '<password>',
     options: [
         'baseUrl' => 'https://api.fern.com',
     ],
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example5/snippet.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example5/snippet.php
similarity index 90%
rename from seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example5/snippet.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example5/snippet.php
index 379913d20cec..50c374428362 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example5/snippet.php
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example5/snippet.php
@@ -6,7 +6,6 @@
 
 $client = new SeedClient(
     username: '<username>',
-    password: '<password>',
     options: [
         'baseUrl' => 'https://api.fern.com',
     ],
diff --git a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example6/snippet.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example6/snippet.php
similarity index 90%
rename from seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example6/snippet.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example6/snippet.php
index 379913d20cec..50c374428362 100644
--- a/seed/php-sdk/basic-auth-pw-omitted/src/dynamic-snippets/example6/snippet.php
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/src/dynamic-snippets/example6/snippet.php
@@ -6,7 +6,6 @@
 
 $client = new SeedClient(
     username: '<username>',
-    password: '<password>',
     options: [
         'baseUrl' => 'https://api.fern.com',
     ],
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Client/RawClientTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Client/RawClientTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Client/RawClientTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Client/RawClientTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/AdditionalPropertiesTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/AdditionalPropertiesTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/AdditionalPropertiesTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/AdditionalPropertiesTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/DateArrayTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/DateArrayTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/DateArrayTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/DateArrayTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/EmptyArrayTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/EmptyArrayTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/EmptyArrayTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/EmptyArrayTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/EnumTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/EnumTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/EnumTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/EnumTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/ExhaustiveTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/ExhaustiveTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/ExhaustiveTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/ExhaustiveTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/InvalidTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/InvalidTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/InvalidTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/InvalidTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/NestedUnionArrayTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/NestedUnionArrayTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/NestedUnionArrayTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/NestedUnionArrayTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/NullPropertyTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/NullPropertyTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/NullPropertyTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/NullPropertyTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/NullableArrayTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/NullableArrayTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/NullableArrayTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/NullableArrayTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/ScalarTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/ScalarTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/ScalarTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/ScalarTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/TraitTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/TraitTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/TraitTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/TraitTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/UnionArrayTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/UnionArrayTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/UnionArrayTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/UnionArrayTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/UnionPropertyTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/UnionPropertyTest.php
similarity index 100%
rename from seed/php-sdk/basic-auth-pw-omitted/tests/Core/Json/UnionPropertyTest.php
rename to seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Core/Json/UnionPropertyTest.php
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/BasicAuthWireTest.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/BasicAuthWireTest.php
new file mode 100644
index 000000000000..0125f21dcc87
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/BasicAuthWireTest.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace Seed\Tests;
+
+use Seed\Tests\Wire\WireMockTestCase;
+use Seed\SeedClient;
+
+class BasicAuthWireTest extends WireMockTestCase
+{
+    /**
+     * @var SeedClient $client
+     */
+    private SeedClient $client;
+
+    /**
+     */
+    public function testGetWithBasicAuth(): void {
+        $testId = 'basic_auth.get_with_basic_auth.0';
+        $this->client->basicAuth->getWithBasicAuth(
+            [
+                'headers' => [
+                    'X-Test-Id' => 'basic_auth.get_with_basic_auth.0',
+                ],
+            ],
+        );
+        $this->verifyRequestCount(
+            $testId,
+            "GET",
+            "/basic-auth",
+            null,
+            1
+        );
+    }
+
+    /**
+     */
+    public function testPostWithBasicAuth(): void {
+        $testId = 'basic_auth.post_with_basic_auth.0';
+        $this->client->basicAuth->postWithBasicAuth(
+            [
+                'key' => "value",
+            ],
+            [
+                'headers' => [
+                    'X-Test-Id' => 'basic_auth.post_with_basic_auth.0',
+                ],
+            ],
+        );
+        $this->verifyRequestCount(
+            $testId,
+            "POST",
+            "/basic-auth",
+            null,
+            1
+        );
+    }
+
+    /**
+     */
+    protected function setUp(): void {
+        parent::setUp();
+        $wiremockUrl = getenv('WIREMOCK_URL') ?: 'http://localhost:8080';
+        $this->client = new SeedClient(
+            username: 'test-username',
+        options: [
+            'baseUrl' => $wiremockUrl,
+        ],
+        );
+    }
+}
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/WireMockTestCase.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/WireMockTestCase.php
new file mode 100644
index 000000000000..0ae28fccdabe
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/WireMockTestCase.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace Seed\Tests\Wire;
+
+use Http\Discovery\Psr17FactoryDiscovery;
+use Http\Discovery\Psr18ClientDiscovery;
+use PHPUnit\Framework\TestCase;
+use Seed\Core\Json\JsonEncoder;
+
+/**
+ * Base test case for WireMock-based wire tests.
+ *
+ * The WireMock container lifecycle is managed by the bootstrap file (tests/Wire/bootstrap.php)
+ * which starts the container once before all tests and stops it after all tests complete.
+ */
+abstract class WireMockTestCase extends TestCase
+{
+    /**
+     * Verifies the number of requests made to WireMock filtered by test ID for concurrency safety.
+     *
+     * @param string $testId The test ID used to filter requests
+     * @param string $method The HTTP method (GET, POST, etc.)
+     * @param string $urlPath The URL path to match
+     * @param array<string, string>|null $queryParams Query parameters to match
+     * @param int $expected Expected number of requests
+     */
+    protected function verifyRequestCount(
+        string $testId,
+        string $method,
+        string $urlPath,
+        ?array $queryParams,
+        int $expected
+    ): void {
+        $client = Psr18ClientDiscovery::find();
+        $requestFactory = Psr17FactoryDiscovery::findRequestFactory();
+        $streamFactory = Psr17FactoryDiscovery::findStreamFactory();
+
+        $body = [
+            'method' => $method,
+            'urlPath' => $urlPath,
+            'headers' => [
+                'X-Test-Id' => ['equalTo' => $testId],
+            ],
+        ];
+        if ($queryParams !== null && $queryParams !== []) {
+            $body['queryParameters'] = [];
+            foreach ($queryParams as $k => $v) {
+                $body['queryParameters'][$k] = ['equalTo' => (string) $v];
+            }
+        }
+
+        $wiremockUrl = getenv('WIREMOCK_URL') ?: 'http://localhost:8080';
+        $request = $requestFactory->createRequest('POST', $wiremockUrl . '/__admin/requests/find')
+            ->withHeader('Content-Type', 'application/json')
+            ->withBody($streamFactory->createStream(JsonEncoder::encode($body)));
+        $response = $client->sendRequest($request);
+
+        $this->assertSame(200, $response->getStatusCode(), 'Failed to query WireMock requests');
+
+        $json = json_decode((string) $response->getBody(), true);
+        
+        // Ensure we have an array; otherwise, fail the test.
+        if (!is_array($json)) {
+            $this->fail('Expected WireMock to return a JSON object.');
+        }
+
+        /** @var array<string, mixed> $json */
+        $requests = [];
+        if (isset($json['requests']) && is_array($json['requests'])) {
+            $requests = $json['requests'];
+        }
+
+        /** @var array<int, mixed> $requests */
+        $this->assertCount(
+            $expected,
+            $requests,
+            sprintf('Expected %d requests, found %d', $expected, count($requests))
+        );
+    }
+}
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/bootstrap.php b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/bootstrap.php
new file mode 100644
index 000000000000..200266641318
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/tests/Wire/bootstrap.php
@@ -0,0 +1,55 @@
+<?php
+
+/**
+ * Bootstrap file for wire tests.
+ *
+ * This file is loaded once before any tests run and manages the WireMock
+ * container lifecycle - starting it once at the beginning and stopping it
+ * after all tests complete.
+ */
+
+require_once __DIR__ . '/../../vendor/autoload.php';
+
+$projectRoot = \dirname(__DIR__, 2);
+$dockerComposeFile = $projectRoot . '/wiremock/docker-compose.test.yml';
+
+// If WIREMOCK_URL is already set (external orchestration), skip container management
+if (getenv('WIREMOCK_URL') !== false) {
+    return;
+}
+
+echo "\nStarting WireMock container...\n";
+$cmd = sprintf(
+    'docker compose -f %s up -d --wait 2>&1',
+    escapeshellarg($dockerComposeFile)
+);
+exec($cmd, $output, $exitCode);
+if ($exitCode !== 0) {
+    throw new \RuntimeException("Failed to start WireMock: " . implode("\n", $output));
+}
+
+// Discover the dynamically assigned port
+$portCmd = sprintf(
+    'docker compose -f %s port wiremock 8080 2>&1',
+    escapeshellarg($dockerComposeFile)
+);
+exec($portCmd, $portOutput, $portExitCode);
+if ($portExitCode === 0 && !empty($portOutput[0])) {
+    $parts = explode(':', $portOutput[0]);
+    $port = end($parts);
+    putenv("WIREMOCK_URL=http://localhost:{$port}");
+    echo "WireMock container is ready on port {$port}\n";
+} else {
+    putenv('WIREMOCK_URL=http://localhost:8080');
+    echo "WireMock container is ready (default port 8080)\n";
+}
+
+// Register shutdown function to stop the container after all tests complete
+register_shutdown_function(function () use ($dockerComposeFile) {
+    echo "\nStopping WireMock container...\n";
+    $cmd = sprintf(
+        'docker compose -f %s down -v 2>&1',
+        escapeshellarg($dockerComposeFile)
+    );
+    exec($cmd);
+});
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/wiremock/docker-compose.test.yml b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/wiremock/docker-compose.test.yml
new file mode 100644
index 000000000000..58747d54a46b
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/wiremock/docker-compose.test.yml
@@ -0,0 +1,14 @@
+services:
+  wiremock:
+    image: wiremock/wiremock:3.9.1
+    ports:
+      - "0:8080"  # Use dynamic port to avoid conflicts with concurrent tests
+    volumes:
+      - ./wiremock-mappings.json:/home/wiremock/mappings/wiremock-mappings.json
+    command: ["--global-response-templating", "--verbose"]
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:8080/__admin/health"]
+      interval: 2s
+      timeout: 5s
+      retries: 15
+      start_period: 5s
diff --git a/seed/php-sdk/basic-auth-pw-omitted/wire-tests/wiremock/wiremock-mappings.json b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/wiremock/wiremock-mappings.json
new file mode 100644
index 000000000000..8a3e7dd565af
--- /dev/null
+++ b/seed/php-sdk/basic-auth-pw-omitted/wire-tests/wiremock/wiremock-mappings.json
@@ -0,0 +1,70 @@
+{
+  "mappings": [
+    {
+      "id": "ce59c023-78fc-4d8d-8e8c-95f5e1a6204a",
+      "name": "getWithBasicAuth - default",
+      "request": {
+        "urlPathTemplate": "/basic-auth",
+        "method": "GET",
+        "headers": {
+          "Authorization": {
+            "equalTo": "Basic dGVzdC11c2VybmFtZTo="
+          }
+        }
+      },
+      "response": {
+        "status": 200,
+        "body": "true",
+        "headers": {
+          "Content-Type": "application/json"
+        }
+      },
+      "uuid": "ce59c023-78fc-4d8d-8e8c-95f5e1a6204a",
+      "persistent": true,
+      "priority": 3,
+      "metadata": {
+        "mocklab": {
+          "created": {
+            "at": "2020-01-01T00:00:00.000Z",
+            "via": "SYSTEM"
+          }
+        }
+      },
+      "postServeActions": []
+    },
+    {
+      "id": "9cf6385c-29ea-4710-8792-fd2e00adc7c7",
+      "name": "postWithBasicAuth - default",
+      "request": {
+        "urlPathTemplate": "/basic-auth",
+        "method": "POST",
+        "headers": {
+          "Authorization": {
+            "equalTo": "Basic dGVzdC11c2VybmFtZTo="
+          }
+        }
+      },
+      "response": {
+        "status": 200,
+        "body": "true",
+        "headers": {
+          "Content-Type": "application/json"
+        }
+      },
+      "uuid": "9cf6385c-29ea-4710-8792-fd2e00adc7c7",
+      "persistent": true,
+      "priority": 3,
+      "metadata": {
+        "mocklab": {
+          "created": {
+            "at": "2020-01-01T00:00:00.000Z",
+            "via": "SYSTEM"
+          }
+        }
+      }
+    }
+  ],
+  "meta": {
+    "total": 2
+  }
+}
\ No newline at end of file
diff --git a/seed/php-sdk/basic-auth/wire-tests/.fern/metadata.json b/seed/php-sdk/basic-auth/wire-tests/.fern/metadata.json
index 8478683b9c41..d6b2eda38969 100644
--- a/seed/php-sdk/basic-auth/wire-tests/.fern/metadata.json
+++ b/seed/php-sdk/basic-auth/wire-tests/.fern/metadata.json
@@ -1,7 +1,7 @@
 {
   "cliVersion": "DUMMY",
   "generatorName": "fernapi/fern-php-sdk",
-  "generatorVersion": "local",
+  "generatorVersion": "latest",
   "generatorConfig": {
     "enable-wire-tests": true
   },
diff --git a/seed/php-sdk/basic-auth/wire-tests/src/SeedClient.php b/seed/php-sdk/basic-auth/wire-tests/src/SeedClient.php
index b94c5065f3ed..197e6664136c 100644
--- a/seed/php-sdk/basic-auth/wire-tests/src/SeedClient.php
+++ b/seed/php-sdk/basic-auth/wire-tests/src/SeedClient.php
@@ -31,7 +31,7 @@ class SeedClient
 
     /**
      * @param string $username The username to use for authentication.
-     * @param string $password The username to use for authentication.
+     * @param string $password The password to use for authentication.
      * @param ?array{
      *   baseUrl?: string,
      *   client?: ClientInterface,
diff --git a/seed/php-sdk/basic-auth/wire-tests/tests/Wire/BasicAuthWireTest.php b/seed/php-sdk/basic-auth/wire-tests/tests/Wire/BasicAuthWireTest.php
index 2d804a182fff..edf399f0571e 100644
--- a/seed/php-sdk/basic-auth/wire-tests/tests/Wire/BasicAuthWireTest.php
+++ b/seed/php-sdk/basic-auth/wire-tests/tests/Wire/BasicAuthWireTest.php
@@ -61,7 +61,7 @@ protected function setUp(): void {
         parent::setUp();
         $wiremockUrl = getenv('WIREMOCK_URL') ?: 'http://localhost:8080';
         $this->client = new SeedClient(
-            username: 'test-user',
+            username: 'test-username',
                 password: 'test-password',
         options: [
             'baseUrl' => $wiremockUrl,
diff --git a/seed/php-sdk/basic-auth/wire-tests/wiremock/wiremock-mappings.json b/seed/php-sdk/basic-auth/wire-tests/wiremock/wiremock-mappings.json
index e4105fe17be0..043be0044335 100644
--- a/seed/php-sdk/basic-auth/wire-tests/wiremock/wiremock-mappings.json
+++ b/seed/php-sdk/basic-auth/wire-tests/wiremock/wiremock-mappings.json
@@ -5,7 +5,12 @@
       "name": "getWithBasicAuth - default",
       "request": {
         "urlPathTemplate": "/basic-auth",
-        "method": "GET"
+        "method": "GET",
+        "headers": {
+          "Authorization": {
+            "equalTo": "Basic dGVzdC11c2VybmFtZTp0ZXN0LXBhc3N3b3Jk"
+          }
+        }
       },
       "response": {
         "status": 200,
@@ -32,7 +37,12 @@
       "name": "postWithBasicAuth - default",
       "request": {
         "urlPathTemplate": "/basic-auth",
-        "method": "POST"
+        "method": "POST",
+        "headers": {
+          "Authorization": {
+            "equalTo": "Basic dGVzdC11c2VybmFtZTp0ZXN0LXBhc3N3b3Jk"
+          }
+        }
       },
       "response": {
         "status": 200,
diff --git a/seed/php-sdk/seed.yml b/seed/php-sdk/seed.yml
index 42fa78a77e45..4a2eb1b196da 100644
--- a/seed/php-sdk/seed.yml
+++ b/seed/php-sdk/seed.yml
@@ -29,6 +29,10 @@ fixtures:
     - outputFolder: wire-tests
       customConfig:
         enable-wire-tests: true
+  basic-auth-pw-omitted:
+    - outputFolder: wire-tests
+      customConfig:
+        enable-wire-tests: true
   exhaustive:
     - outputFolder: no-custom-config
       customConfig: null
diff --git a/test-definitions/fern/apis/basic-auth-pw-omitted/generators.yml b/test-definitions/fern/apis/basic-auth-pw-omitted/generators.yml
index fc35e4407493..64ff4bd50cfc 100644
--- a/test-definitions/fern/apis/basic-auth-pw-omitted/generators.yml
+++ b/test-definitions/fern/apis/basic-auth-pw-omitted/generators.yml
@@ -4,7 +4,6 @@ groups:
     generators:
       - name: fernapi/fern-php-sdk
         version: latest
-        ir-version: v61
         github:
           token: ${GITHUB_TOKEN}
           mode: push
@@ -14,7 +13,7 @@ groups:
     generators:
       - name: fernapi/fern-go-sdk
         version: latest
-        ir-version: v61
+        ir-version: v63
         github:
           token: ${GITHUB_TOKEN}
           mode: push