Bot Essentials
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Open project · Free for builders everywhere

Free, open connectors that give your bot real tools.

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A glowing translucent robot head with streams of data flowing through it

The catalogue in numbers

  • 15connectors
  • 377tools your bot can call
  • 827tests, all passing

Counted from the connector folders. Tests last run on 27 October 2026.

Featured

PkgIntel

Check package versions, advisories and licences. No API key needed.

Example. A real tool and its real input. No live data is shown.

You ask
“Does lodash 4.17.21 have known vulnerabilities?”
Your bot calls
check_vulnerabilities with ecosystem, name and version
It gets back
OSV advisories for that exact version. No API key needed.
git clone https://github.com/si-essence/pkgintel-mcp.git && cd pkgintel-mcp && npm install && npm run build
See the detailsStar on GitHubAll 15 connectors

How it works

  1. 01

    Pick a connector

    Browse the catalogue. Every one is free and open.

  2. 02

    Run it yourself

    Start it on your own machine over stdio or Streamable HTTP, or in Docker. You keep your own API keys.

  3. 03

    Ask your bot

    Add the server to your MCP client. Your bot can now call its tools.

Read the install guide

Help keep it free

There is no shop and no paywall. Star a repo, send a fix, or sponsor the work. github.com/si-essence

Support the projectBecome a sponsor