diff --git a/.cursor-plugin/plugin.json b/.cursor-plugin/plugin.json
new file mode 100644
index 0000000..83c7909
--- /dev/null
+++ b/.cursor-plugin/plugin.json
@@ -0,0 +1,26 @@
+{
+  "name": "arcjet",
+  "version": "1.0.0",
+  "description": "Runtime security for your app — abuse protection, budget controls & rate limiting, prompt injection detection, and PII blocking. Connects your AI agent to the Arcjet MCP server and provides security-aware coding guidance.",
+  "author": {
+    "name": "Arcjet",
+    "email": "support@arcjet.com",
+    "url": "https://arcjet.com"
+  },
+  "homepage": "https://arcjet.com",
+  "repository": "https://github.com/arcjet/arcjet-plugin",
+  "license": "Apache-2.0",
+  "logo": "./assets/logo.svg",
+  "keywords": [
+    "security",
+    "rate-limiting",
+    "bot-detection",
+    "abuse-protection",
+    "budget-controls",
+    "waf",
+    "ai-security",
+    "prompt-injection",
+    "pii",
+    "arcjet"
+  ]
+}
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e86cd2f..73551df 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -4,27 +4,32 @@ Thanks for your interest in contributing to the Arcjet plugin for AI coding agen
 
 ## Plugin Specification
 
-This plugin follows the [Open Plugins Specification v1.0.0](https://open-plugins.com/plugin-builders/specification). Key structural requirements:
+This plugin follows the [Open Plugins Specification v1.0.0](https://open-plugins.com/plugin-builders/specification) and is also compatible with [Claude Code](https://docs.claude.com/en/docs/claude-code/plugins) and [Cursor](https://cursor.com/docs/reference/plugins). To support all three, the manifest and MCP config are duplicated into each tool's expected location. Key structural requirements:
 
-- **Manifest** at `.plugin/plugin.json` — must include `name`, `version`, `description`, `author`, `license`, and `logo`
+- **Manifest** at `.plugin/plugin.json` (Open Plugins), `.claude-plugin/plugin.json` (Claude Code), and `.cursor-plugin/plugin.json` (Cursor) — all three must stay in sync and include `name`, `version`, `description`, `author`, `license`, and `logo`
 - **Rules** in `rules/` as `.mdc` files with YAML frontmatter (`description`, `globs`, `alwaysApply`)
 - **Skills** in `skills/<name>/SKILL.md` with YAML frontmatter (`name`, `description`)
 - **Agents** in `agents/` as `.md` files with YAML frontmatter (`name`, `description`)
-- **MCP servers** in `.mcp.json` at the repo root
+- **MCP servers** in `.mcp.json` (Open Plugins / Claude Code) and `mcp.json` (Cursor) at the repo root — both must stay in sync
 - **Assets** in `assets/` (logo, etc.)
 
 ## Directory Structure
 
 ```
-.plugin/plugin.json        # Plugin manifest
-rules/*.mdc                # Auto-activated coding guidance
-skills/*/SKILL.md          # Task-oriented workflows
-agents/*.md                # Agent definitions
-.mcp.json                  # MCP server configuration
-scripts/                   # Tooling (validation, etc.)
-assets/                    # Static assets
+.plugin/plugin.json          # Plugin manifest (Open Plugins)
+.claude-plugin/plugin.json   # Plugin manifest (Claude Code)
+.cursor-plugin/plugin.json   # Plugin manifest (Cursor)
+rules/*.mdc                  # Auto-activated coding guidance
+skills/*/SKILL.md            # Task-oriented workflows
+agents/*.md                  # Agent definitions
+.mcp.json                    # MCP server configuration (Open Plugins / Claude Code)
+mcp.json                     # MCP server configuration (Cursor)
+scripts/                     # Tooling (validation, etc.)
+assets/                      # Static assets
 ```
 
+When updating any manifest or MCP config, update all copies so the tools stay in sync.
+
 ## Development Setup
 
 Open this repo in a devcontainer (VS Code or GitHub Codespaces) — it installs all tooling automatically. Alternatively, install [dprint](https://dprint.dev/) manually.
diff --git a/mcp.json b/mcp.json
new file mode 100644
index 0000000..167ba48
--- /dev/null
+++ b/mcp.json
@@ -0,0 +1,8 @@
+{
+  "mcpServers": {
+    "arcjet": {
+      "type": "http",
+      "url": "https://api.arcjet.com/mcp"
+    }
+  }
+}