ARC-Relay

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

DMARC-safe email forwarding for agents: aliases, DNS health checks, and MCP tools on your domains.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "ARC-Relay": {
      "url": "https://arc-relay.com/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (6)

• check_dmarc read-only

  Check a domain's DMARC, SPF, and MX records. Use this to diagnose email authentication issues.

  Parameters:

  • domain (required) — string — Domain name to check (e.g. example.com)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• check_email_health read-only

  Get a 0-100 email health score for any domain. Checks DMARC, SPF, MX, and DKIM records and returns a letter grade (A+ to F) with actionable recommendations. Use this to audit any domain's email security posture.

  Parameters:

  • domain (required) — string — Domain name to score (e.g. example.com)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• check_health read-only

  Check ARC-Relay service health and uptime.

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• check_spf read-only

  Validate a domain's SPF record. Shows mechanisms, DNS lookup count, and warns if over the 10-lookup limit.

  Parameters:

  • domain (required) — string — Domain name to validate (e.g. example.com)

  Hints: read-only yes · destructive no · idempotent yes · open-world yes

• network_leaderboard read-only

  View top relay nodes ranked by reputation score. Filter by region.

  Parameters:

  • limit — number — Max results (1-100, default 25)
  • region — string — Filter by region (e.g. us-west, eu-central)

  Hints: read-only yes · destructive no · idempotent yes · open-world no

• network_stats read-only

  Get public relay network statistics — total nodes, active nodes, messages routed, delivery rate, and the average DMARC rate nodes report about themselves (rates are null until there is traffic).

  Hints: read-only yes · destructive no · idempotent yes · open-world no

Publisher website

Measured by MCPYP probing. Untested fields are omitted, never estimated. Listing is always free; MCPYP never proxies calls or stores user tokens.