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7. registerApiServer

Studio Apps

registerApiServer

Register API Server

Register an outside HTTP API from its OpenAPI 3.x document as an MCP server you can mount with mountMcpServer, one tool per allowed operation (reads pass, every other call waits on your approval for…

writeexternal

Ask Claude, ChatGPT, Cursor or any AI connected to The Cloud "connect this API", and it calls registerApiServer.

Example call

The MCP tools/call params, with the required arguments only.

{
  "arguments": {
    "name": "<name>"
  },
  "name": "registerApiServer"
}

Arguments

• allowOperationsstring[]optionaloperationIds to serve; every operation when omitted.
• authobjectoptionalOmit for a keyless API.
• baseUrlstringoptionalhttps base URL, when the document names none or a templated one.
• namestringrequiredA display name; the slug defaults from it.
• openApiJsonstringoptionalThe OpenAPI 3.x JSON document itself, up to 2 MB.
• openApiUrlstringoptionalThe https address of the OpenAPI 3.x JSON document.
• rateLimitPerMinuteintegeroptionalCalls per minute per caller; default 60.
• slugstringoptionalThe namespace its tools mount under.
• spaceIdstringoptionalA Space you administer, to make it the Space's server.

Returns

The registry does not declare a return shape.

Declared limits

• allowOperations: maximum items 100
• name: minimum length 1
• name: maximum length 80
• openApiJson: maximum length 2000000
• rateLimitPerMinute: minimum 1
• rateLimitPerMinute: maximum 600

Ask for it

The Cloud routes these requests to this verb.

• connect this API
• add this OpenAPI spec
• turn that REST API into tools

Pair it with

The verbs that finish the job.

• mountMcpServer
• setStudioAppSecret
• disableApiServer
• listMcpServerReceipts

Questions

• What does registerApiServer do?

  Register an outside HTTP API from its OpenAPI 3.x document as an MCP server you can mount with mountMcpServer, one tool per allowed operation (reads pass, every other call waits on your approval for… It is one of the tools The Cloud MCP server gives every connected AI.

• How do I use registerApiServer from Claude or ChatGPT?

  Connect your AI to The Cloud at https://mcp.thecloud.so/mcp and sign in once. Then ask Claude, ChatGPT, Cursor or any AI connected to The Cloud "connect this API", and it calls registerApiServer.

• Is registerApiServer safe to let an AI call?

  registerApiServer changes your workspace. What an AI creates is Private until you share it. It reaches a system outside The Cloud on your behalf.

Connect

One endpoint gives your AI this tool and every other one: connect Claude, ChatGPT, Cursor or Gemini, read what The Cloud is, or see pricing.