HTTP

Returns a lightweight readiness payload so clients can verify the server is up.

Inputs:

• None

Output:

{
  "status": "ok",
  "server": "CL HTTP MCP Server"
}

usage Example:

POST /mcp/http/health_check
 
{}

Performs an outbound HTTP call and returns normalized request/response details, including status, headers, elapsed time, and serialized body content.

Inputs:

• method (string, required) — HTTP method (GET, POST, PUT, PATCH, DELETE, HEAD, OPTIONS)
• url (string, required) — Absolute target URL starting with http:// or

Common Parameters

• timeout_seconds — Maximum time (in seconds) allowed for the HTTP request
• follow_redirects — Controls whether 3xx redirects are automatically followed
• max_response_chars — Limits response body size returned by the tool

Resource Formats

URL Input:

https://{host}/{path}?{query}
Example: https://api.example.com/v1/items?limit=10

response Body Object:

kind: text | base64
content: string
truncated: boolean
original_length: integer

Invalid URL Format

• Cause: url does not start with http:// or https://
• Solution:
  1. Provide a full absolute URL (including protocol)
  2. Verify no typos in host/path

Unsupported HTTP Method

• Cause: method is outside allowed set
• Solution:
  1. Use one of: GET, POST, PUT, , , ,

• HTTP Methods Reference (MDN) — Official method behavior documentation
• HTTP Status Codes (MDN) — Standard HTTP response status reference
• httpx Documentation — Python HTTP client used by this server
• FastMCP Docs — FastMCP framework and protocol usage