Agent Stack Directory: MCP server and open dataset

An open dataset of infrastructure tools for AI agents (cloud browsers, sandboxes, memory, search APIs, email, integrations, payments, voice, observability, frameworks and auth) plus a small MCP server so AI coding tools can query it while you build.

• Remote endpoint: https://agentstackdirectory.com/mcp (Streamable HTTP, stateless, read-only, no key)
• Live data: https://agentstackdirectory.com/data.json
• Snapshot in this repo: data/ (JSON and CSV)
• Website: https://agentstackdirectory.com/mcp/

Tools

Every tool is read-only. Results come back as readable text plus structuredContent JSON.

Example prompts:

• "Which sandboxes for running agent code are open source?"
• "Compare E2B and Daytona."
• "What are the alternatives to Browserbase?"

Listed in the official MCP Registry as com.agentstackdirectory/agent-stack-directory. Server card: https://agentstackdirectory.com/.well-known/mcp/server-card.json

Install (remote, nothing to run locally)

Claude Code

claude mcp add --transport http agent-stack-directory https://agentstackdirectory.com/mcp

Cursor

.cursor/mcp.json in your project, or ~/.cursor/mcp.json for all projects:

{
  "mcpServers": {
    "agent-stack-directory": {
      "url": "https://agentstackdirectory.com/mcp"
    }
  }
}

VS Code

.vscode/mcp.json in your workspace:

{
  "servers": {
    "agent-stack-directory": {
      "type": "http",
      "url": "https://agentstackdirectory.com/mcp"
    }
  }
}

Or from a terminal:

code --add-mcp '{"name":"agent-stack-directory","type":"http","url":"https://agentstackdirectory.com/mcp"}'

Install (local, stdio)

Needs Node 18 or newer. npx builds the server from this repository on first run.

Claude Code

claude mcp add agent-stack-directory -- npx -y github:gmansystems/agent-stack-directory

Cursor

{
  "mcpServers": {
    "agent-stack-directory": {
      "command": "npx",
      "args": ["-y", "github:gmansystems/agent-stack-directory"]
    }
  }
}

VS Code

{
  "servers": {
    "agent-stack-directory": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "github:gmansystems/agent-stack-directory"]
    }
  }
}

From a clone

git clone https://github.com/gmansystems/agent-stack-directory
cd agent-stack-directory
npm install
node dist/stdio.js

Environment variables (optional):

The stdio server caches the dataset in memory for 10 minutes and keeps serving the last good copy if a refresh fails.

Dataset

data/agent-stack-directory.json holds categories and listings. Each listing has:

CSV copies: data/agent-stack-directory.csv and data/categories.csv. Refresh the snapshot with npm run snapshot.

Sponsorship never changes the data or the search ranking. The dataset has no sponsored fields.

Development

npm install
npm test                 # unit tests plus MCP client tests over stdio and Streamable HTTP
npm run test:remote      # live check of https://agentstackdirectory.com/mcp with the MCP client
npm run build:worker     # bundle src/worker.ts for the Cloudflare Pages Function

Layout:

• src/core.ts: data loading and the tool logic, no I/O
• src/server.ts: MCP server definition (official TypeScript SDK)
• src/stdio.ts: stdio entry point (agent-stack-directory-mcp bin)
• src/worker.ts: stateless Streamable HTTP handler for Cloudflare Workers or Pages Functions

To host your own remote copy on Cloudflare, bundle src/worker.ts and call handleMcpRequest(request, loader) from a Worker.

License

• Code: MIT, see LICENSE.
• Data: CC BY 4.0, see DATA-LICENSE.md. Please credit Agent Stack Directory with a link to https://agentstackdirectory.com.

Corrections and new tools: https://agentstackdirectory.com/submit/ or open an issue.