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RDAP API

by rdapapi.io · remote · no sign-in to list tools · v1.3.0 · published by io.rdapapi

Normalized JSON for any domain across 1,200+ TLDs, reading WHOIS where no RDAP server exists.

Read only
CompareRegistry entry

7 tools: 7 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http rdap https://rdapapi.io/mcp/rdap

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

7 tools

Only reads 7Claude Code: allow
  • asn-lookupLook up normalized RDAP data (holder, country, status, registration dates) for an autonomous system number.No findings

    Why it is in this group

    • The name "asn-lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Look up normalized RDAP data (holder, country, status, registration dates) for an autonomous system number.

    Annotations the server declares

    • title: ASN Lookup
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
  • bulk-domain-lookupLook up normalized RDAP registration data for several domain names in one pooled call.No findings

    Why it is in this group

    • The name "bulk-domain-lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Look up normalized RDAP registration data for several domain names in one pooled call. Requires a Pro or Business plan; every domain in the batch counts against the quota.

    Annotations the server declares

    • title: Bulk Domain Lookup
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
  • domain-lookupLook up normalized RDAP registration data (registrar, status, dates, nameservers, contacts) for a domain name.No findings

    Why it is in this group

    • The name "domain-lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Look up normalized RDAP registration data (registrar, status, dates, nameservers, contacts) for a domain name.

    Annotations the server declares

    • title: Domain Lookup
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
  • entity-lookupLook up normalized RDAP data for an RIR entity handle — an organization or contact identifier such as "GOGL" or "ORG-RIEN1-RIPE".No findings

    Why it is in this group

    • The name "entity-lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Look up normalized RDAP data for an RIR entity handle — an organization or contact identifier such as "GOGL" or "ORG-RIEN1-RIPE". Only ARIN, RIPE, APNIC, LACNIC and AFRINIC handles resolve; a domain's registrar or registrant comes from domain-lookup instead.

    Annotations the server declares

    • title: Entity Lookup
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
  • ip-lookupLook up normalized RDAP allocation data (network range, holder, country, status, geofeed URL) for an IP address or CIDR block.No findings

    Why it is in this group

    • The name "ip-lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Look up normalized RDAP allocation data (network range, holder, country, status, geofeed URL) for an IP address or CIDR block.

    Annotations the server declares

    • title: IP Address Lookup
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
  • nameserver-lookupLook up normalized RDAP data (IP addresses, status, sponsoring registrar) for a nameserver hostname.No findings

    Why it is in this group

    • The name "nameserver-lookup" says "lookup": a word for reading.
    Description, as the server wrote it
    Look up normalized RDAP data (IP addresses, status, sponsoring registrar) for a nameserver hostname.

    Annotations the server declares

    • title: Nameserver Lookup
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: true
  • tldsList the TLDs this API can query, or describe one: which RDAP server answers for it, since when it has been supported, and how often that server fills each field.No findings

    Why it is in this group

    • The description's first verb is "list": a word for reading.
    Description, as the server wrote it
    List the TLDs this API can query, or describe one: which RDAP server answers for it, since when it has been supported, and how often that server fills each field. Metadata, so it never counts against the monthly quota.

    Annotations the server declares

    • title: Supported TLDs
    • readOnlyHint: true
    • destructiveHint: false
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.3.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http rdap https://rdapapi.io/mcp/rdap

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__rdap__domain-lookup",
      "mcp__rdap__bulk-domain-lookup",
      "mcp__rdap__ip-lookup",
      "mcp__rdap__asn-lookup",
      "mcp__rdap__nameserver-lookup",
      "mcp__rdap__entity-lookup",
      "mcp__rdap__tlds"
    ],
    "ask": [],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as rdap. Review it before you use it.