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iana-registries-mcp-server

cyanheads

Look up IANA ports, media types, HTTP status codes and fields, URI schemes, enterprise numbers, and BCP 47 language tags; check RFC status; search and read any IANA registry via MCP. STDIO or Streamable HTTP.

Setup

Choose your client, copy the config, then fill in any required environment variables.

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Local

claude mcp add iana-registries -- npx -y @cyanheads/iana-registries-mcp-server

Remote

claude mcp add --transport http iana-registries https://iana-registries.caseyjhand.com/mcp