HTTP 431 header-fields-too-large MCP server

Meaning of HTTP 431.

Category: Dev tools

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Source: official MCP Registry entry io.github.sadri-dridi/http-431 · repository

Direct MCP URL and setup

CLAUDE CODE

claude mcp add --transport http io-github-sadri-dridi-http-431 https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-431/mcp

CURSOR / VS CODE (mcp.json)

{ "mcpServers": { "io-github-sadri-dridi-http-431": { "url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/http-431/mcp" } } }