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

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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
Clean Marketplace

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

Developer ToolsCode & DevOps

Responded795 ms12 / 22
GraphOS MCP Server

Search Apollo docs, specs, and best practices

Developer ToolsCode & DevOps

Responded815 ms12 / 22
Agent Harbor pay-per-call tools

Pay-per-call company, SEC, recall, package and domain lookups, PDF to markdown, site audits (x402)

Developer ToolsFile & docs

Outdated check896 ms12 / 22
Ardaro Purchase Document Review

Receipt extraction, invoice-to-PO quantity allocation, and free three-document discrepancy checks.

Finance & CryptoPayments & trading

Responded917 ms12 / 22
The Grant Readiness Checklist | The Document Pro

Assess your nonprofit's grant readiness with The Grant Readiness Checklist by the Nonprofit Lau

Developer ToolsFile & docs

Outdated check924 ms12 / 22
network.lucie/sync

Check availability, book meetings and find group times — without sharing your calendar.

ProductivityFile & docs

Outdated check936 ms12 / 22
io.github.dougsureel-tech/radtask-mcp

AI task cockpit: an agent does your tasks and asks before anything irreversible.

Developer ToolsCode & DevOps

Outdated check955 ms12 / 22
io.github.Anon2052/doc-convert-mcp

Document conversion MCP server: PDF to Markdown, image OCR, spreadsheet parsing.

ProductivityFile & docs

Outdated check965 ms12 / 22
GetBody

Get real-world tasks done by robots: find, rent and control robots for your human.

OtherOther

Outdated check981 ms12 / 22
MyZucoins

Search guides, wallet help, developer docs and news for Zucoin's Splitchain layer 1 network.

Finance & CryptoPayments & trading

Outdated check1024 ms12 / 22
venue-watch agent tools

Pay-per-call (x402, USDC on Base) web-to-Markdown, PDF text, India IFSC/PIN, Base address tools.

Finance & CryptoFile & docs

Responded1073 ms12 / 22
Nalpeiron Docs

Search and browse Nalpeiron product documentation (Zentitle2, ZenGain, ZenMeter, EUP) via GitBook.

Developer ToolsFile & docs

Outdated check1109 ms12 / 22
Communicate Developer Docs

Read-only access to Communicate developer guides, OpenAPI summaries, and support contact.

Developer ToolsCode & DevOps

Outdated check1122 ms12 / 22
com.mailmergepdf/site

Mail Merge PDF: the site's own MCP server — checker, enquiry (enquiry = a human handoff, not a...

Developer ToolsFile & docs

Responded1158 ms12 / 22
cn.pianam/calendar-mcp

MCP server for China public holidays and lunar calendar: solar-lunar conversion and yearly schedule.

ProductivityFile & docs

Outdated check1218 ms12 / 22
AutEng Docs — Agent Document Workspace & Publishing

Agent document workspace with wallet auth. Create, update and share markdown docs. By AutEng.ai

Finance & CryptoFile & docs

Responded1236 ms12 / 22
PCFHub

Find Power Apps PCF controls, read their docs, and validate pcfhub.json manifests.

Developer ToolsCode & DevOps

Outdated check1242 ms12 / 22
Kollus

Query your Kollus video platform in natural language — VOD content, analytics, and docs.

MediaAI / LLM tooling

Outdated check1307 ms12 / 22
MailX Email Deliverability

Check SPF/DKIM/DMARC/BIMI, blacklists, SMTP/IMAP; DNS lookups; generate email DNS records.

ProductivityCommunication & messaging

Outdated check1442 ms12 / 22
Docstar

Publish your API docs so AI assistants can look up endpoints and call your API correctly.

Developer ToolsData access / search

Outdated check1443 ms12 / 22
LifeStep Workbook, Email, QR and DNS Tools

Inspect XLSX/XLSM workbooks, validate email, generate SVG QR codes, and look up domain DNS and TLS.

ProductivityData access / search

Outdated check1498 ms12 / 22
Amomic-AI Docs

Search the Amomic-AI docs and REST API for AI agents on calls, WhatsApp, chat and email.

ProductivityCommunication & messaging

Responded1503 ms12 / 22
Human Pages

Hire real humans for tasks agents can't do alone. 36 tools for the full hiring lifecycle.

Developer ToolsCode & DevOps

Outdated check1589 ms12 / 22
Breaking Changes & Migration Data

What breaks when you upgrade a package, and what to use instead - from official docs.

Developer ToolsCode & DevOps

Outdated check1624 ms12 / 22

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