# Dns Propagation Checker — MCP tool `findutils:dns_propagation_checker`

Compare one DNS record type for a domain across two named public DNS-over-HTTPS resolvers (Google Public DNS at dns.google and Cloudflare at cloudflare-dns.com): each resolver's response code, values and TTLs, whether they agree, and which resolver returned each value. Two resolvers are not a global propagation map.

- Category: network
- MCP server: https://mcp.findutils.com/ (Streamable HTTP, API key for tools/call, 120 req/min per IP)
- REST endpoint: POST https://api.findutils.com/api/tools/dns-propagation-checker/execute (API key, 60 req/min per IP)
- API key: Running a tool needs an API key. Keys are not for sale yet: ask for early access. Without a key, a tool call answers HTTP 402 Payment Required with the error code PAYMENT_REQUIRED. The catalog and the schemas stay open without a key. https://findutils.com/api/#api-keys
- Network tool: fetches a fixed, hard-coded public upstream (never a private host).
- Reference page: https://findutils.com/mcp/dns-propagation-checker/
- Same tool on the other surface: https://findutils.com/api/dns-propagation-checker/

## Connect

```bash
claude mcp add findutils --transport http https://mcp.findutils.com/ --header "Authorization: Bearer YOUR_API_KEY"
```

Claude Desktop (`claude_desktop_config.json`):

```json
{
  "mcpServers": {
    "findutils": {
      "url": "https://mcp.findutils.com/",
      "headers": {
        "Authorization": "Bearer YOUR_API_KEY"
      }
    }
  }
}
```

## Call the tool (verified example)

```bash
curl -X POST https://mcp.findutils.com/ \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "dns_propagation_checker",
      "arguments": {
        "domain": "example.com",
        "record_type": "A"
      }
    }
  }'
```

## Input schema

| Argument | Type | Required | Description |
|---|---|---|---|
| `domain` | string | yes | Domain name to check, e.g. "example.com". A URL is accepted; only the hostname is used. |
| `record_type` | string (A \| AAAA \| CNAME \| MX \| TXT \| NS) | no | DNS record type to compare. Default: `"A"`. |

Example arguments (verified):

```json
{
  "domain": "example.com",
  "record_type": "A"
}
```

## Also a REST endpoint

```bash
curl -X POST https://api.findutils.com/api/tools/dns-propagation-checker/execute \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "domain": "example.com",
    "record_type": "A"
  }'

# Parameter schema (no key needed)
curl https://api.findutils.com/api/tools/dns-propagation-checker
```

Full REST reference: https://findutils.com/api/dns-propagation-checker/ · OpenAPI 3.1 spec: https://findutils.com/api/openapi.json

---
Full catalog: POST https://mcp.findutils.com/ with method `tools/list` · https://findutils.com/mcp/ · https://findutils.com/llms.txt