# Domain Trust Check (DNS, Email Auth, TLS, Headers)

> Check a domain's DNS, SPF/DMARC and TLS before trusting it. $0.003/call via x402.

- name: io.github.pcp183/domain-check
- version: 0.2.0
- connection class: unknown (unknown)
- trust: 67/100 flags: unreachable
- quality: 73/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.pcp183%2Fdomain-check
- tools: https://api.protogrid.dev/v1/servers/io.github.pcp183%2Fdomain-check/tools

**Not classified yet.** The remote endpoints have not been probed successfully, or the listing has nothing to connect to.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "domain-check": {
      "type": "http",
      "url": "https://domain-check-production-6228.up.railway.app/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 0
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website -unreachable(3 failures) +updated-3d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 73/100 (new)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: domain_check (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
- pass `tools.token_cost`: about 211 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 3 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 1, about 211 tokens to load them all
- tool set hash: 2a51e01ba76d13827c0f444855f66c2a
- tools last changed: 2026-10-17T06:57:43.874Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.pcp183/domain-check.svg)](https://protogrid.dev/servers/io.github.pcp183/domain-check)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-17 `domain_check` changed (description)
  - before: Live technical checks of a domain, measured by us at request time: A/AAAA, NS, MX records, SPF and DMARC policies, DNSSEC presence (DS), CAA, TLS certificate issuer, validity dates and hostname match on port 443, and HTTPS security headers (HSTS, CSP, X-Frame-Options). Returns a simple risk flag list. Use when an agent must sanity-check a company's or vendor's domain before trusting an email, link or supplier: does it resolve, receive mail, publish SPF/DMARC, and serve a valid TLS certificate. Paid per call via x402 (USDC on Base).
  - after: Sanity-check a vendor's or sender's domain before trusting an email, link or payment request. Measured at request time: A/AAAA, NS and MX records, SPF and DMARC policies, DNSSEC (DS), CAA, the TLS certificate on port 443 (issuer, validity, hostname match) and HTTPS security headers, with a list of risk flags. Technical signals only, not a reputation or ownership verdict. Use when an unfamiliar domain appears in an invoice, email or supplier record. $0.003 per call, USDC on Base (x402).

Full history: https://api.protogrid.dev/v1/servers/io.github.pcp183%2Fdomain-check/changes

## Remotes

- https://domain-check-production-6228.up.railway.app/mcp (streamable-http, auth none, reachable false, uptime30d 0.5)

## Packages

_none_

## Tools (1)

- `domain_check`: Sanity-check a vendor's or sender's domain before trusting an email, link or payment request. Measured at request time: A/AAAA, NS and MX records, SPF and DMARC policies, DNSSEC (DS), CAA, the TLS certificate on port 443 (issuer, validity, hostname match) and HTTPS security headers, with a list of risk flags. Technical signals only, not a reputation or ownership verdict. Use when an unfamiliar domain appears in an invoice, email or supplier record. $0.003 per call, USDC on Base (x402).