MCP server

DomainCanary Official

com.domaincanary/mcp

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Check a domain's DMARC, SPF and DKIM, build SPF records, explain bounces, read DMARC reports.

Working at last checkVerified publisher: domaincanary.comAbout 1,341 tokens per request once connected4 tools

https://domaincanary.com/mcp

At a glance

Type: MCP server
Publisher: domaincanary.com (verified by the MCP Registry)
Status: Working at last check
Tools: 4
Token cost: About 1,341 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 26 Oct 2026, 08:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http domaincanary https://domaincanary.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.domaincanary]
url = "https://domaincanary.com/mcp"

Gemini CLI

{"mcpServers":{"domaincanary":{"httpUrl":"https://domaincanary.com/mcp"}}}

Cursor

{"mcpServers":{"domaincanary":{"url":"https://domaincanary.com/mcp"}}}

VS Code

{"servers":{"domaincanary":{"type":"http","url":"https://domaincanary.com/mcp"}}}

Antigravity

agy mcp add domaincanary https://domaincanary.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"domaincanary","server_url":"https://domaincanary.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"domaincanary","server_url":"https://domaincanary.com/mcp"}

analyze_report ~364 tokens
Use this when someone has a DMARC aggregate report and wants to know which senders passed and which failed. The report is the XML, .gz or .zip file that receivers such as Google and Yahoo email to the address in a domain's rua tag. In ChatGPT, pass the uploaded file. Elsewhere, pass the report XML a
build_spf ~505 tokens
Use this when someone lists the services that send their email and wants the SPF record to publish, or wants a sender added to the SPF record they already have. Takes provider names such as Google Workspace or Mailchimp, include terms such as include:spf.example.com, or IP addresses, and returns one
check_domain ~261 tokens
Use this when someone asks whether a domain's email authentication is set up correctly, why mail from a domain fails DMARC, SPF or DKIM, or which DNS records to publish for it. Reads the domain's live DMARC, SPF and DKIM records and returns what is wrong with each, plus the records to add or change.
explain_bounce ~211 tokens
Use this when someone pastes a bounce message, an SMTP reply such as 550 5.7.26, or an Authentication-Results header and asks what it means or how to fix it. Returns what the receiving server refused, what to change, when it clears, and the page that explains it. Works from the pasted text alone and

SignaMail
Email signatures for French businesses: HTML generator, legal mentions per job, SPF/DKIM/DMARC
Couryo free email tools
Free, no login: verify an email address, check SPF/DKIM/DMARC, explain SMTP errors, build SPF/DMARC.
Powerline Email Tools
Email deliverability checks: SPF, DKIM, DMARC, BIMI, MTA-STS, blacklists, headers, spam words
DataNexus MCP
Public data intelligence for AI agents — CVE, compliance, patents, contracts, domains.
Volanea
Email infrastructure on Volanea: build templates, segments and workflows, send and check email.
WarmInboxes Free Deliverability Tools
Free cold email deliverability checks, list tools, inbox planning and original placement research.
Domain Mail Check
Check a domain's email DNS, whether Gmail and Outlook accept its mail, and its registration.
DemiSignal
Check a domain's DMARC, SPF, DKIM, MX, BIMI and MTA-STS records. Generate SPF and DMARC records.

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