diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 6b01b164b..9f9fd2a82 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -130,6 +130,7 @@ jobs:
           publish_pkg "@hyperframes/producer" "@hyperframes/producer"
           publish_pkg "@hyperframes/shader-transitions" "@hyperframes/shader-transitions"
           publish_pkg "@hyperframes/studio" "@hyperframes/studio"
+          publish_pkg "@hyperframes/aws-lambda" "@hyperframes/aws-lambda"
 
           # CLI is @hyperframes/cli in the monorepo but published as unscoped "hyperframes" on npm.
           # Rewrite the name in package.json before publishing, then use npm publish directly
diff --git a/package.json b/package.json
index 916af0bde..11ac3ade0 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
   "type": "module",
   "scripts": {
     "dev": "bun run studio",
-    "build": "bun run --filter @hyperframes/core build && bun run --filter '@hyperframes/{core,engine,producer,player,studio,shader-transitions}' build && bun run --filter @hyperframes/cli build",
+    "build": "bun run --filter @hyperframes/core build && bun run --filter '@hyperframes/{core,engine,producer,player,studio,shader-transitions,aws-lambda}' build && bun run --filter @hyperframes/cli build",
     "build:producer": "bun run --filter @hyperframes/producer build",
     "studio": "bun run --filter @hyperframes/studio dev",
     "build:hyperframes-runtime": "bun run --filter @hyperframes/core build:hyperframes-runtime",
diff --git a/packages/aws-lambda/build.mjs b/packages/aws-lambda/build.mjs
new file mode 100644
index 000000000..f6918a248
--- /dev/null
+++ b/packages/aws-lambda/build.mjs
@@ -0,0 +1,62 @@
+#!/usr/bin/env node
+/**
+ * Build script for @hyperframes/aws-lambda (public OSS package).
+ *
+ * Bundles each subpath barrel via esbuild → dist/, then emits .d.ts via tsc.
+ *
+ * Subpaths (each gets its own dist entry so adopters that import one path
+ * don't load the others' transitive graphs at module-load time):
+ *
+ *   .         (the umbrella barrel: handler + sdk + cdk types re-exported)
+ *   ./handler (the Lambda runtime entry — what `scripts/build-zip.ts` ZIPs)
+ *   ./sdk     (client-side helpers — AWS-SDK only, no chromium/puppeteer)
+ *   ./cdk     (CDK L2 construct — aws-cdk-lib is a peer dep)
+ *
+ * All production deps and peer deps are kept external so consumers resolve
+ * them via their own node_modules.
+ */
+
+import { build } from "esbuild";
+import { execSync } from "node:child_process";
+import { mkdirSync, rmSync } from "node:fs";
+
+rmSync("dist", { recursive: true, force: true });
+mkdirSync("dist", { recursive: true });
+
+const sharedOpts = {
+  bundle: true,
+  platform: "node",
+  target: "node22",
+  format: "esm",
+  minify: false,
+  sourcemap: true,
+  external: [
+    "@aws-sdk/client-s3",
+    "@aws-sdk/client-sfn",
+    "@hyperframes/producer",
+    "@hyperframes/producer/distributed",
+    "@sparticuz/chromium",
+    "aws-cdk-lib",
+    "constructs",
+    "ffmpeg-static",
+    "ffprobe-static",
+    "puppeteer-core",
+    "tar",
+  ],
+};
+
+await Promise.all([
+  build({ ...sharedOpts, entryPoints: ["src/index.ts"], outfile: "dist/index.js" }),
+  build({ ...sharedOpts, entryPoints: ["src/handler.ts"], outfile: "dist/handler.js" }),
+  build({ ...sharedOpts, entryPoints: ["src/sdk/index.ts"], outfile: "dist/sdk/index.js" }),
+  build({ ...sharedOpts, entryPoints: ["src/cdk/index.ts"], outfile: "dist/cdk/index.js" }),
+]);
+
+// esbuild doesn't emit .d.ts. tsc does, with a build-only tsconfig that
+// drops the workspace `paths` overrides so `@hyperframes/producer` resolves
+// through node_modules to the sibling package's already-built `dist/`
+// types instead of pulling its full source tree into emit (which would
+// violate rootDir).
+execSync("tsc -p tsconfig.build.json --emitDeclarationOnly", { stdio: "inherit" });
+
+console.log("[Build] Complete: dist/{index,handler,sdk/index,cdk/index}.js + .d.ts");
diff --git a/packages/aws-lambda/package.json b/packages/aws-lambda/package.json
index a94e09624..a14776d08 100644
--- a/packages/aws-lambda/package.json
+++ b/packages/aws-lambda/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hyperframes/aws-lambda",
-  "version": "0.0.1",
+  "version": "0.6.20",
   "description": "AWS Lambda adapter for HyperFrames distributed rendering — handler, client-side SDK, and CDK construct.",
   "repository": {
     "type": "git",
@@ -8,25 +8,37 @@
     "directory": "packages/aws-lambda"
   },
   "files": [
-    "src/",
+    "dist/",
     "scripts/",
     "README.md"
   ],
   "type": "module",
-  "main": "./src/index.ts",
-  "types": "./src/index.ts",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
   "exports": {
-    ".": "./src/index.ts",
-    "./handler": "./src/handler.ts",
-    "./sdk": "./src/sdk/index.ts",
-    "./cdk": "./src/cdk/index.ts"
+    ".": {
+      "import": "./dist/index.js",
+      "types": "./dist/index.d.ts"
+    },
+    "./handler": {
+      "import": "./dist/handler.js",
+      "types": "./dist/handler.d.ts"
+    },
+    "./sdk": {
+      "import": "./dist/sdk/index.js",
+      "types": "./dist/sdk/index.d.ts"
+    },
+    "./cdk": {
+      "import": "./dist/cdk/index.js",
+      "types": "./dist/cdk/index.d.ts"
+    }
   },
   "publishConfig": {
     "access": "public",
     "registry": "https://registry.npmjs.org/"
   },
   "scripts": {
-    "build": "tsc --noEmit",
+    "build": "node build.mjs",
     "build:zip": "tsx scripts/build-zip.ts",
     "probe:beginframe": "tsx scripts/probe-beginframe.ts",
     "probe:beginframe:docker": "docker build -f scripts/probe-beginframe.dockerfile -t hyperframes-lambda-probe:local ../.. && docker run --rm hyperframes-lambda-probe:local",
diff --git a/packages/aws-lambda/tsconfig.build.json b/packages/aws-lambda/tsconfig.build.json
new file mode 100644
index 000000000..c93bd474e
--- /dev/null
+++ b/packages/aws-lambda/tsconfig.build.json
@@ -0,0 +1,12 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "paths": {},
+    "noEmit": false,
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "declaration": true,
+    "declarationMap": true,
+    "sourceMap": true
+  }
+}
diff --git a/packages/aws-lambda/tsconfig.json b/packages/aws-lambda/tsconfig.json
index faa4cf6d7..b15c984cb 100644
--- a/packages/aws-lambda/tsconfig.json
+++ b/packages/aws-lambda/tsconfig.json
@@ -15,5 +15,5 @@
     }
   },
   "include": ["src/**/*"],
-  "exclude": ["node_modules", "dist", "src/**/*.test.ts", "scripts"]
+  "exclude": ["node_modules", "dist", "src/**/*.test.ts", "src/**/__fixtures__/**", "scripts"]
 }
diff --git a/packages/producer/src/regression-harness-lambda-local-types.ts b/packages/producer/src/regression-harness-lambda-local-types.ts
new file mode 100644
index 000000000..bb021951a
--- /dev/null
+++ b/packages/producer/src/regression-harness-lambda-local-types.ts
@@ -0,0 +1,37 @@
+/**
+ * Public-facing types for `./regression-harness-lambda-local.ts`.
+ *
+ * Kept in its own file because the implementation imports
+ * `@hyperframes/aws-lambda`, which can't be resolved by producer's
+ * tsc emit pass until aws-lambda's own dist/ is built. Splitting the
+ * types out lets producer's regression harness reference the lambda
+ * adapter's shape without pulling the aws-lambda graph into producer's
+ * type-check pass.
+ */
+
+/** Inputs for {@link runLambdaLocalRender}. Same contract as `runDistributedSimulatedRender`. */
+export interface RunLambdaLocalInput {
+  projectDir: string;
+  tempRoot: string;
+  renderedOutputPath: string;
+  fps: 24 | 30 | 60;
+  /**
+   * Width/height from the fixture's renderConfig. Forwarded directly to
+   * the Lambda event so this mode catches drift if the handler ever
+   * starts honouring `Config.width/height` for canvas sizing rather
+   * than reading the composition's `data-width`/`data-height`. The
+   * `distributed-simulated` mode hardcodes 1920×1080 because it
+   * bypasses the event-serialization boundary; lambda-local goes
+   * through it, which is the whole point.
+   */
+  width: number;
+  height: number;
+  format: "mp4" | "mov" | "png-sequence";
+  codec?: "h264" | "h265";
+  chunkSize?: number;
+  maxParallelChunks?: number;
+  variables?: Record<string, unknown>;
+}
+
+/** Public signature of the dynamically-loaded `runLambdaLocalRender`. */
+export type RunLambdaLocalRender = (input: RunLambdaLocalInput) => Promise<void>;
diff --git a/packages/producer/src/regression-harness-lambda-local.ts b/packages/producer/src/regression-harness-lambda-local.ts
index b731ac35d..b1c342e62 100644
--- a/packages/producer/src/regression-harness-lambda-local.ts
+++ b/packages/producer/src/regression-harness-lambda-local.ts
@@ -46,29 +46,8 @@ import type {
   SerializableDistributedRenderConfig,
 } from "@hyperframes/aws-lambda";
 
-/** Inputs for {@link runLambdaLocalRender}. Same contract as `runDistributedSimulatedRender`. */
-export interface RunLambdaLocalInput {
-  projectDir: string;
-  tempRoot: string;
-  renderedOutputPath: string;
-  fps: 24 | 30 | 60;
-  /**
-   * Width/height from the fixture's renderConfig. Forwarded directly to
-   * the Lambda event so this mode catches drift if the handler ever
-   * starts honouring `Config.width/height` for canvas sizing rather
-   * than reading the composition's `data-width`/`data-height`. The
-   * `distributed-simulated` mode hardcodes 1920×1080 because it
-   * bypasses the event-serialization boundary; lambda-local goes
-   * through it, which is the whole point.
-   */
-  width: number;
-  height: number;
-  format: "mp4" | "mov" | "png-sequence";
-  codec?: "h264" | "h265";
-  chunkSize?: number;
-  maxParallelChunks?: number;
-  variables?: Record<string, unknown>;
-}
+export type { RunLambdaLocalInput } from "./regression-harness-lambda-local-types.js";
+import type { RunLambdaLocalInput } from "./regression-harness-lambda-local-types.js";
 
 const FAKE_BUCKET = "harness-lambda-local";
 
diff --git a/packages/producer/src/regression-harness.ts b/packages/producer/src/regression-harness.ts
index 5b9d3c153..015cae007 100644
--- a/packages/producer/src/regression-harness.ts
+++ b/packages/producer/src/regression-harness.ts
@@ -37,10 +37,27 @@ import {
 // In Dockerfile.test the workspace copy of aws-lambda's src isn't present,
 // so a static import here would fail at module-load time even when
 // running `--mode=in-process`. Load it on demand instead.
-async function loadLambdaLocalRender(): Promise<
-  typeof import("./regression-harness-lambda-local.js").runLambdaLocalRender
-> {
-  const mod = await import("./regression-harness-lambda-local.js");
+//
+// The signature is typed via `RunLambdaLocalRender` (in its own types-only
+// file) instead of `typeof import(...)` so producer's tsc doesn't have to
+// type-check the implementation. The implementation imports
+// `@hyperframes/aws-lambda`, whose types come from `dist/index.d.ts` after
+// aws-lambda's build runs — a chicken-and-egg with producer's tsc that
+// would otherwise fail the whole-repo build.
+//
+// The dynamic import path is indirected through a variable so tsc can't
+// statically resolve the target file. Without this indirection tsc still
+// pulls `regression-harness-lambda-local.ts` (and its `@hyperframes/aws-lambda`
+// imports) into the program even though the tsconfig `exclude` list
+// nominally hides it. `tsx` resolves the path normally at runtime.
+import type { RunLambdaLocalRender } from "./regression-harness-lambda-local-types.js";
+
+const LAMBDA_LOCAL_MODULE = "./regression-harness-lambda-local.js";
+
+async function loadLambdaLocalRender(): Promise<RunLambdaLocalRender> {
+  const mod = (await import(LAMBDA_LOCAL_MODULE)) as {
+    runLambdaLocalRender: RunLambdaLocalRender;
+  };
   return mod.runLambdaLocalRender;
 }
 
diff --git a/packages/producer/tsconfig.json b/packages/producer/tsconfig.json
index cbe56306a..4e876a30f 100644
--- a/packages/producer/tsconfig.json
+++ b/packages/producer/tsconfig.json
@@ -20,5 +20,11 @@
     }
   },
   "include": ["src/**/*"],
-  "exclude": ["node_modules", "dist", "src/**/*.test.ts", "src/**/__test_utils__/**"]
+  "exclude": [
+    "node_modules",
+    "dist",
+    "src/**/*.test.ts",
+    "src/**/__test_utils__/**",
+    "src/regression-harness-lambda-local.ts"
+  ]
 }
diff --git a/scripts/set-version.ts b/scripts/set-version.ts
index b7d45f92a..a66f1f9b8 100644
--- a/scripts/set-version.ts
+++ b/scripts/set-version.ts
@@ -25,6 +25,7 @@ const PACKAGES = [
   "packages/shader-transitions",
   "packages/studio",
   "packages/cli",
+  "packages/aws-lambda",
 ];
 
 const ROOT = join(import.meta.dirname, "..");