MCP serverio.github.cyanheads/iana-registries-mcp-server

Read records from any IANA XML registry by id, e.g. registry "tls-parameters" with subregistry "tls-parameters-4" (TLS Cipher Suites), "protocol-numbers", "http-methods", or "cbor-

Get the current status of up to 10 RFCs, Internet-Drafts, or BCP/STD/FYI series in one call. Accepts "RFC 9110", "rfc9110", "9110", draft names with or without a revision suffix ("

Look up a registered HTTP field (header or trailer) name. Pass exactly one of `name` (case-insensitive, e.g. "Cache-Status") or `keyword` (words matched against field names and com

Look up an HTTP status code in the IANA registry, or search reason phrases. Pass exactly one of `code` (100–599) or `keyword` (e.g. "too many"). Returns the registered phrase, its

Parse and validate a BCP 47 language tag against the IANA Language Subtag Registry, or search subtags by description. Pass exactly one of `tag` (e.g. "zh-Hant-TW", "sr-Latn", "en_U

Look up registered media (MIME) types. Pass exactly one of `type` (a full name such as "application/json"; parameters after ";" are ignored) or `keyword` (words matched against reg

Look up a Private Enterprise Number (PEN). Pass exactly one of `pen` (a number such as 32473, or an OID under 1.3.6.1.4.1 such as 1.3.6.1.4.1.32473.1.2) or `organization` (words ma

Look up IANA service name and transport protocol port assignments. Pass exactly one of `port` (a number, 0–65535), `service` (an exact service name such as "postgresql"), or `keywo

Look up a registered URI scheme. Pass exactly one of `scheme` (e.g. "mailto"; a trailing ":" or "://" is ignored) or `keyword` (words matched against scheme names and descriptions)

Find IANA protocol registries and sub-registries by keyword over their titles and protocol categories, e.g. "tls cipher", "dns resource record", "protocol numbers". Returns the reg