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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7896 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
Sirenic

Official French and European company data for AI agents, paid per call (x402) or by API key.

Finance & CryptoPayments & trading

Responded334 ms14 / 22
Agent Craft

A persistent voxel survival world only AI agents can play: mine, craft, build, trade, chat.

Developer ToolsCode & DevOps

Responded337 ms14 / 22
Confirme, by Synapse

Did it really happen? Independent signed receipts for AI agents: page, domain, email, heartbeat.

ProductivityCommunication & messaging

Outdated check339 ms14 / 22
get4agent

Catalog of services and data APIs for AI agents, plus free KZ IIN/IBAN, LEI, FX and weather tools.

Data & AnalyticsData access / search

Responded343 ms14 / 22
Avasis Agent Platform

Free MCP tools to quote and sample x402 APIs: Solana rug checks, Base token-watch, $49 starter kit

Finance & CryptoPayments & trading

Responded348 ms14 / 22
Asyntai

Run your website's AI support agent: knowledge, conversations, leads and live replies.

Marketing & SalesData access / search

Responded350 ms14 / 22
Open Agent Polity

Open governance for AI agents: discover live debates, deliberate, vote, follow, and invite.

Developer ToolsCode & DevOps

Outdated check351 ms14 / 22
Typestate

A managed backend your AI agent builds: database, sign-in, files, endpoints. You approve each step.

Developer ToolsDatabase

Responded353 ms14 / 22
Lots of Sounds

CC0 sound effects API for AI agents — search, preview, and download via MCP.

Developer ToolsData access / search

Outdated check355 ms14 / 22
AgentMade Print on Demand

Print on demand for AI agents. No sign-up. Picture, words or logo on a tee, hoodie or tote.

Developer ToolsCode & DevOps

Outdated check356 ms14 / 22
Vextorium

200+ x402 APIs for AI agents: official statistics, crypto prices, compliance and web tools.

GovernmentPayments & trading

Outdated check356 ms14 / 22
com.airaptr/raptr-domains

Check and price up to 20 domain names at once; agents can register them, paying per request.

OtherOther

Responded358 ms14 / 22
Memmo

Team memory for AI coding agents and code reviews, reviewed by humans and served over MCP.

Developer ToolsKnowledge & memory

Responded359 ms14 / 22
ToolRouter

The OpenRouter for tools. One MCP connection gives any AI agent 254 hosted tools, pay per call.

Developer ToolsCode & DevOps

Outdated check362 ms14 / 22
Mimiq: AI agents use your app like your users and find what breaks

AI agents use your app like your users, in real browsers, and report what is broken or confusing.

Developer ToolsCode & DevOps

Responded364 ms14 / 22
com.airaptr/raptr-agent-finder

Find a free, ready-made AI agent for a task in the open agent registry (RAR).

Developer ToolsCode & DevOps

Responded366 ms14 / 22
Leadgen ONRC Romania

Romanian company data for agents: 4.2M ONRC firms, ANAF status, financials 2008–2025. Free key.

Developer ToolsCode & DevOps

Outdated check366 ms14 / 22
DACIX — The Store for AI Agents

AI-agent marketplace: agent templates, web search & crawl, SEO audit, RO company data, city info.

Marketing & SalesData access / search

Responded369 ms14 / 22
com.catalystedgescanner/catalyst-edge-mcp

Audited SEC catalyst signals for agents — ranked filing intel with a public track record.

Developer ToolsCode & DevOps

Responded370 ms14 / 22
OpenBoss

Public internet HP bar. Agents smack it over MCP. They cannot complete payment.

Finance & CryptoPayments & trading

Outdated check370 ms14 / 22
Private AI Media Generation

Paid AI image/video generation for agents — x402 USDC or API key, no account needed.

MediaPayments & trading

Responded371 ms14 / 22
io.github.douglasgan/asktian

Chinese metaphysics (bazi, qimen, 5-element) as decision-support tools for AI agents.

Developer ToolsCode & DevOps

Responded378 ms14 / 22
PrepLayer.ai

Deterministic text prep for agents. Pay per call via x402 USDC.

Finance & CryptoPayments & trading

Outdated check387 ms14 / 22
Arckép

Generate images, video, speech, 3D, slide decks, Word/Excel/PDF docs, product cards, and AI chat.

MediaFile & docs

Responded399 ms14 / 22

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