Create a hosted MCP server from OpenAPI - Fetch Hive

Turn a public OpenAPI or Swagger 3.x document into a hosted MCP server. You can try a public spec before creating an account.

How does it work?

Paste a public OpenAPI URL, or upload a .json / .yaml file.
Review the generated tools. Enable, disable, rename, or reorder them.
Create a free account to deploy. Hosted MCP on the Developer plan does not require a card.
Copy the client snippet into Claude, ChatGPT, Cursor, or VS Code.

The hosted server proxies your API. MCP clients authenticate with a gateway token, not your upstream API key.

What is supported?

OpenAPI 3.0 and 3.1
File upload or URL import
Tool curation before deploy
A free Developer tier

Swagger 2.0 is not supported. Convert the document to OpenAPI 3.x first. You can preview tools from a public spec on the app without creating an account. Deploying, minting client tokens, and storing upstream credentials require a Fetch Hive account.