# Rdapapi Rdap MCP server

Source: https://glimind.com/server/mcp-registry%2Fio.rdapapi%2Frdap
Registry id: `mcp-registry/io.rdapapi/rdap`
Status: live (checked 2026-10-27T01:41:23.867Z)

## Verdict

Rdapapi Rdap MCP server answered 100% of Glimind's liveness checks over 30 days, better than 42% of MCP servers, with 1021 ms median handshake and 4 outages in 90 days. Its agent-readiness grade is A (95/100) across 7 tools, costing an agent about 1,119 tokens to load. Checked every few minutes; no tool is ever called.

## Measurements (30 days)

| Metric | Value | Better than |
|---|---|---|
| Uptime, 30 days | 100% | 42% of MCP servers |
| Median handshake latency | 1021 ms | 20% of MCP servers |
| p95 handshake latency | 2925 ms | — |
| Checks in 30 days | 4,970 | — |
| Outages, 90 days | 4 | — |
| Median recovery | 6 min | — |
| Agent-readiness score | 95/100 (A) | 80% of MCP servers |
| Tools | 7 | — |
| Tool-list size for an agent | ~1,119 tokens | 71% of MCP servers |
| Days observed | 29 | — |

## Install

```json
{
  "mcpServers": {
    "rdapapi-rdap-mcp-server": {
      "type": "http",
      "url": "https://rdapapi.io/mcp/rdap"
    }
  }
}
```

Claude Code:

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

## Tools (7)

- `asn-lookup`: Look up normalized RDAP data (holder, country, status, registration dates) for an autonomous system number.
- `bulk-domain-lookup`: 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
- `domain-lookup`: Look up normalized RDAP registration data (registrar, status, dates, nameservers, contacts) for a domain name.
- `entity-lookup`: 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
- `ip-lookup`: Look up normalized RDAP allocation data (network range, holder, country, status, geofeed URL) for an IP address or CIDR block.
- `nameserver-lookup`: Look up normalized RDAP data (IP addresses, status, sponsoring registrar) for a nameserver hostname.
- `tlds`: 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 fiel

Measured by Glimind (https://glimind.com): MCP handshake + tool list only, no tool is ever called. CC BY 4.0.