Best DMARC MCP servers

A Model Context Protocol server that gives an AI assistant a set of tools for working with email authentication data. Without one, an assistant can only describe DMARC in general terms. With one, it can read your actual domains, reports and records, and on some platforms act on them.

DMARKOFF publishes that its server is read-only by default and cannot modify DNS or account configuration. DmarcDkim.com's tools read and validate rather than change, and DMARC Examiner's registry entry describes reading reports, sources and alerts. PowerDMARC publishes tools that create domains and manage sub-account members. Palisade returns the exact records for you to publish and can switch on its own hosted DMARC and MTA-STS. Authwright goes furthest: it writes records into your zone at the registrar itself, and also buys domains and renews certificates, which is why it needs your registrar API credentials. Check this before connecting anything, because it decides what a mistaken instruction can do.

Not with Palisade. The server returns the records to publish and you publish them at your DNS provider; the agent proposes and a person approves. Other platforms draw the line differently, so read each vendor's published tool list rather than assuming a shared default.

Authwright does. Its onboarding asks you to paste a GoDaddy API key and secret, or a Cloudflare API token, into the portal, and its site says those credentials are encrypted at rest in Azure Key Vault and scoped per domain where the registrar API allows it. That is what lets it write records for you, and it means a vendor now holds keys to your registrar account. Palisade takes the other route: you authorise the connection in your own provider's window, no credentials reach Palisade, access is scoped to email-authentication records, and you can revoke it. That path covers 64 providers with automatic configuration, against the five registrars Authwright's adapters reach. Whichever you pick, the question to ask your security reviewer is who ends up holding the keys.

It varies. Palisade includes MCP access on every plan, including free. DMARC Examiner publishes a free tier of one domain and 1,000 emails per month. DMARKOFF includes it on paid plans with a 14-day trial. DmarcDkim.com offers free lookup tools with account data behind a subscription. DMARCguard is free to self-host under Apache-2.0. PowerDMARC's MCP page does not state a plan requirement; it links a 15-day trial. Authwright starts on a free workspace covering one account, and does not publish rates for its Agency Plus or Enterprise tiers.

It decides which clients can reach the server. A remote server over Streamable HTTP works with clients that support remote MCP. Clients that only speak local stdio need a bridge; Palisade, DMARC Examiner and DMARCguard all offer one. If your team is standardized on one client, check that it supports the transport before choosing.

Five of the seven. Checked on 18 August 2026: Palisade as email.palisade/palisade, PowerDMARC as com.powerdmarc/mcp, DMARC Examiner as io.github.dmarc-examiner/mcp, DMARKOFF as com.dmarkoff/mcp, and DMARCguard still under its former name io.github.meysam81/parse-dmarc. DmarcDkim.com is not listed there, and neither is Authwright, re-checked on 20 August 2026. A registry listing is a distribution choice rather than a quality bar, so read it as one signal about how a server expects to be found. Note that the registry's own search matches server names rather than descriptions, so a keyword search for "dmarc" does not return all five.

No. A count says how many named calls exist, not whether they cover the work you do. Authwright publishes 42 tools, and 8 of them are email authentication; the rest handle domain purchasing, certificates, WHOIS privacy and bulk portfolio work. That is a real advantage if you manage a registrar portfolio, and beside the point if you came for DMARC. Read the published tool list against your own workflow rather than the headline number.

This is Palisade's roundup, so Palisade appears first and we are transparent about that. Every factual claim about another vendor comes from that vendor's own site or repository on the date shown beside it, so you can check each one and judge the servers yourself.