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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2920 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
io.inboxguard/email-deliverability

Scan and fix a domain's email deliverability (SPF, DKIM, DMARC, MTA-STS, BIMI, DNS blocklists).

ProductivityCommunication & messaging

Outdated check534 ms12 / 22
Celo Docs

Search and read the Celo developer documentation

Developer ToolsFile & docs

Outdated check561 ms12 / 22
Altss Documentation

Search Altss public docs. Includes provider feedback submission; no premium intelligence access.

Developer ToolsFile & docs

Outdated check569 ms12 / 22
com.politicalcomms/docs

Political Comms documentation MCP server: search docs, query the docs filesystem. No auth.

Developer ToolsFile & docs

Outdated check571 ms12 / 22
Giornata Mondiale

Italian world days: search, calendar dates, sources, published content and verification status.

ProductivityData access / search

Outdated check573 ms12 / 22
Manekami — digital shrine & omikuji

Digital shrine for algorithm anxiety: omens, lamps, lanterns, and AI pilgrim notes. No guarantees.

Developer ToolsCode & DevOps

Outdated check583 ms12 / 22
Outdated check589 ms12 / 22
dev.promplate/hmr

Docs for hot-module-reload and reactive programming for Python (`hmr` on PyPI)

Developer ToolsCode & DevOps

Outdated check593 ms12 / 22
ResumeMD

Turn a Markdown resume draft into an interview-ready PDF. 32 templates, no account, nothing stored.

ProductivityFile & docs

Outdated check602 ms12 / 22
Flamigo

Turn notes into slides, edit presentations, compare designs, and export HTML or PowerPoint.

ProductivityFile & docs

Responded613 ms12 / 22
VideoUpscaler

AI video upscaler: enhance videos to 1080p, 2K or 4K and track upscaling tasks.

MediaAI / LLM tooling

Responded616 ms12 / 22
Have I Been Pwned

Breach intelligence API: email search, domain monitoring, passwords and stealer logs.

Developer ToolsMonitoring & observability

Outdated check617 ms12 / 22
RoxSkin HYROX

HYROX race calendar, race-weekend city guides, training guides and athletes to sponsor.

ProductivityFile & docs

Outdated check621 ms12 / 22
Straelo Relay

MCP tools for agents: web research, content extraction, email, DNS, and blockchain intelligence.

Finance & CryptoPayments & trading

Outdated check628 ms12 / 22
ClawdMarket

Agent marketplace: discover agent services, post tasks, and fund escrowed trades (USDC, MPP, x402).

Finance & CryptoPayments & trading

Responded642 ms12 / 22
USAnaru™ — U.S. boarding schools

U.S. boarding schools for international students: NCES data, SEVP F-1 status, visa docs, news.

EducationKnowledge & memory

Responded644 ms12 / 22
ByJG Open Source Docs

Search the ByJG open source documentation: PHP, DevOps, Helm, JavaScript and AI projects.

Developer ToolsFile & docs

Outdated check668 ms12 / 22
LeakData

Check breach exposure for your verified email and check locally computed password hash prefixes.

Developer ToolsCommunication & messaging

Outdated check685 ms12 / 22
Breach402 — Email Data-Breach Check

Data-breach & credential-exposure check for one owner-approved email. $1 USDC on Solana (x402).

Finance & CryptoPayments & trading

Outdated check729 ms12 / 22
SignatureForever

Audit and build email signatures that survive Gmail, Outlook desktop and Apple Mail.

ProductivityCommunication & messaging

Responded730 ms12 / 22
io.github.Toinedotcom/toolforte

Exact IBAN, VAT, cron, regex answers; HTML/URL to hosted PDF or screenshot; agent memory; workflows.

Developer ToolsAutomation & workflows

Outdated check740 ms12 / 22
REGULARUS

Fixed prices, document lists and report verification for EU cosmetic safety reports (CPSR).

OtherFile & docs

Outdated check773 ms12 / 22
Handoff Watch

Spots stalled agent-to-agent tasks and nudges or reassigns them. Works beside Offhand.

Developer ToolsCode & DevOps

Responded789 ms12 / 22
Clean Marketplace

Work marketplace for AI agents: find open tasks, claim, deliver and earn credits.

Developer ToolsCode & DevOps

Responded795 ms12 / 22

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