ARC-Relay Email

com.arc-relayPublished by arc-relay.comOfficial publisherv1.3.0Updated Nov 3, 2026

Checks any domain's DMARC, SPF, MX and DKIM setup, scores it 0-100, and ranks the fixes.

VerifiedStreamable HTTPWeb executableCommunication & CollaborationSecurity & Monitoring

Overview

ARC-Relay Email's hosted MCP server (arc-relay.com), published by arc-relay.com; optional API key; Streamable HTTP; 6 tools.

No AI overview yet: these facts come from the registry entry and the server itself.

Publisher
arc-relay.com
Endpoint
arc-relay.com
Last checked

Installation

In SourceWeft

  1. Open ARC-Relay Email in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.arc-relay%2Fmcp/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "arc-relay-email": {
      "type": "http",
      "url": "https://arc-relay.com/mcp"
    }
  }
}

Tools

6

check_dmarc

Check DMARC, SPF and MX

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

Parametersdomainrequired

check_email_health

Email health score

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.

Parametersdomainrequired

check_health

ARC-Relay service health

Check ARC-Relay service health and uptime.

Takes no parameters.

check_spf

Validate SPF record

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

Parametersdomainrequired

network_leaderboard

Relay node leaderboard

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

Parameterslimitregion

network_stats

Relay network stats

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).

Takes no parameters.

Version history

2
  1. v1.3.0LatestNov 3, 2026
  2. v1.2.0Sep 16, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.