Agent Stack Directory

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

Tool	Input	Returns
search_tools	query?, category?, open_source?, limit? (1 to 50, default 10)	Matching tools ranked by keyword match
get_tool	tool (slug or name)	Summary, official site, open-source flag, last link check, alternatives in the same category
compare	tools (2 to 4 slugs or names)	Side-by-side table, notable differences, head-to-head page URL when one exists
list_categories	none	Every category with key, description and tool counts

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):

Variable	Default	Purpose
AGENT_STACK_DATA_URL	https://agentstackdirectory.com/data.json	Where to fetch the dataset
AGENT_STACK_DATA_FILE	unset	Read a local JSON file instead, for offline use, e.g. data/agent-stack-directory.json

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:

Field	Meaning
slug	Stable identifier, used in directory URLs
name	Product name
url	Official site
category	Category key (see categories)
summary	One plain sentence on what it does, written from the vendor's own site
tagline	The vendor's own tagline
open_source	true when the product is marked open source
added	Date added to the directory
verified	Date the official link was last checked

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.