MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

Read-only probes

DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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1584 servers

Ordered by checks passedClear filters
Dated server measurements. The status describes the last probe or a listed authentication requirement. Checks that have not been measured are not failures. Open a server to inspect the evidence.
Server / capabilityLast probeMedian latencyChecks passedLast checked
Copix

Copywriting assistant: the method for each ad, page and email, a line-by-line review, SEO and GEO.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Corebee Customer Support

Hosted support inbox over MCP: answer web chat, WhatsApp, email and SMS, manage knowledge.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Corvio

Cloud notes and AI workspace: search your notes and save AI answers as editable, shareable docs.

ProductivityData access / search

Requires authNot measured4 / 22
Cosmic Ephemeris

78 astrology calculations, Tarot, symbolic readings and Vedic calendars via two scoped MCP tools.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
Couryo

Transactional email API: send, read delivery timelines, explain bounces, manage domains (OAuth).

ProductivityCommunication & messaging

Requires authNot measured4 / 22
CVPosh

Read your CVPosh resumes, check ATS compatibility and match keywords to a job posting.

ProductivityFile & docs

Requires authNot measured4 / 22
Dandori

Tasks, routines, notes, lists, budget and calendar in Dandori, a personal life organiser.

ProductivityFile & docs

Not measuredNot measured4 / 22Not checked yet
Dart

AI-native project management for tasks, docs, collaboration, and agents.

ProductivityFile & docs

Requires authNot measured4 / 22
DataQuoll

Australian data as MCP tools: incidents, gauges, declarations, calendars, police releases, archive.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
DayOneLead

Find newly registered businesses, manage prospects, and run approval-gated email outreach.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Dealboard

Simple deal tracker with pipeline cards, notes, goals, reports, and AI-powered deal updates.

ProductivityFile & docs

Requires authNot measured4 / 22
Deeplead

Find local businesses, companies and decision makers with verified emails for B2B outreach.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Democruit

Your career companion for ATS checks, resumes, cover letters, job tracking, websites, and more.

ProductivityFile & docs

Requires authNot measured4 / 22
Derrick

B2B data enrichment: verified work emails, phones, firmographics, tech stack, hiring signals.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Descovo — B2B contact data

B2B contact data for AI agents: search 700M+ people, reveal work emails. Pay per record.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Deskhand

Deskhand CRM for AI agents: key per agent, undo a run, email drafts. Start with one POST.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Dijin Memory

Dijin is a Memory Layer: recall notes, decisions, and evidence-backed answers across every AI.

ProductivityKnowledge & memory

Requires authNot measured4 / 22
Disban

Check if a signup email is disposable, free, an alias, testing, parked or unknown, with evidence.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
DnsGuard

Check a domain's email authentication: SPF, DKIM, DMARC, BIMI, MX, MTA-STS, TLS-RPT. Score + fixes.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
DoDo

Seven tools to list, add, start, complete or cancel todos, undo merges, and review your week.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Domailo

Read, search, draft, send and schedule email in your company-domain mailboxes on Domailo.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
DomainCat

Monitor SSL certs (incl. origin behind Cloudflare), domain expiry, DNS, email auth and blacklists.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
DomainDNA

Tech stack, email security (SPF, DMARC, MX provider) and domain age API + MCP. 25 free domains/day.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
DomainRef - domain and email security check

Pay-per-call domain and email security check: SPF, DKIM, DMARC, TLS, DNSSEC, BIMI, with exact fixes.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet

Automated measurements. Not a rating. Unmeasured checks are not failures. How to read the evidence