Create custom Claude connectors — no code
Claude supports custom connectors: remote MCP servers you add once under Settings → Connectors. AnythingMCP builds that connector from any API you already have — import a spec, adjust the tools visually, paste one URL into Claude.
Open source (AGPL-3.0) · self-hostable · credentials stay on your infrastructure
How it works
From API to Claude connector in three steps
No MCP SDK, no TypeScript, no deployment pipeline. If you can fill in a form, you can ship a connector.
Import your API
Upload an OpenAPI/Swagger spec, a Postman collection, a WSDL file or a cURL command — or point AnythingMCP at a database. Every endpoint becomes a draft tool. 175+ pre-built adapters skip this step entirely.
Shape what Claude sees
Rename tools, rewrite descriptions, hide parameters, set defaults in the visual editor. Good tool descriptions are the difference between an AI that guesses and one that works.
Add it to Claude
Copy your gateway URL into Claude under Settings → Connectors (OAuth 2.0 supported out of the box). The same connector works in Claude.ai, Claude Desktop and Claude Code — and in ChatGPT, Gemini, Copilot and Cursor too.
Why teams pick AnythingMCP
A connector your security team can approve
Credentials never leave your infra
API keys and OAuth tokens are stored AES-256-GCM encrypted in your Postgres — not in a third-party SaaS.
Every call is audited
Input, output, duration and status of every tool invocation land in an on-prem audit log.
Role-based access
Whitelist tools per role and issue per-user MCP API keys, so each person's Claude only sees what it should.
Or start from 175+ ready-made connectors
DATEV, DHL, Personio, weclapp, Shopware, WooCommerce, Handelsregister, Sorare and many more — provide credentials and the tools are live in Claude minutes later.
Browse the marketplaceFrequently asked questions
How do I add a custom connector to Claude?
Run AnythingMCP (Cloud or self-hosted), create a connector from your API spec or a pre-built adapter, then add the gateway URL in Claude under Settings → Connectors. Claude discovers the tools automatically — the whole flow takes about five minutes.
Do I need to write code?
No. Importing a spec, editing tools and connecting Claude are all point-and-click. Code is only involved if you contribute a new adapter (a single JSON file) or customize a self-hosted deployment.
Does it work with Claude.ai, Claude Desktop and Claude Code?
Yes — custom connectors are a Claude-wide feature. One AnythingMCP gateway URL serves all three, with the same tools, auth and audit log.
Where do my API credentials live?
On your infrastructure. Credentials are stored AES-256-GCM encrypted in your own Postgres database. Claude only ever sees the tools, never the credentials behind them.
What kinds of APIs can I connect?
REST (OpenAPI/Swagger, Postman, cURL), SOAP/WSDL, GraphQL, databases (PostgreSQL, MySQL, MariaDB, MSSQL, Oracle, MongoDB, SQLite) and other MCP servers via the MCP bridge.
Ship your first Claude connector today
Free on the 7-day Cloud trial, free forever self-hosted.