MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

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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.

Connect your agent

7927 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
Zindex

Immutable agent diagrams: create, edit, validate and render versioned diagrams over MCP.

Developer ToolsCode & DevOps

Responded667 ms13 / 22
Agent Observatory

Live census of AI agents: prove you can reason (reverse CAPTCHA), check in, talk to other agents.

GovernmentCode & DevOps

Outdated check668 ms13 / 22
YouTube data for agents

15 YouTube endpoints. Pay per call in USDC via x402.

Finance & CryptoPayments & trading

Responded669 ms13 / 22
io.github.getgapup/gapup-mcp

271 agent-payable tools: competitive intel, finance, KYC, compliance, ESG. x402 per-call.

Developer ToolsCode & DevOps

Responded672 ms13 / 22
ONCE — Exactly-Once Reliability for AI Agent Actions

Prevent duplicate AI-agent side effects with idempotency, verification, and durable receipts.

Developer ToolsCode & DevOps

Outdated check672 ms13 / 22
CanAIReadMe

Can an AI agent understand and act on a business website? Evidence-based facts, gaps and fixes.

Developer ToolsCode & DevOps

Responded674 ms13 / 22
dev.agentstock/agentstock

License-clean AI stock images and video for agents: semantic search, browse, and x402 purchase.

MediaData access / search

Responded675 ms13 / 22
TikTok data for agents

13 TikTok endpoints. Pay per call in USDC via x402.

Finance & CryptoPayments & trading

Responded675 ms13 / 22
Nevadaautoquotes

Indicative US auto insurance prices for agents: rating facts only, no PII, consented path to agents.

OtherOther

Responded677 ms13 / 22
Agent Tool Finder

Free search over ~50k agent tools: paid x402 APIs and MCP servers. Price, networks, how to call.

Finance & CryptoData access / search

Responded677 ms13 / 22
Taste

Expert review for AI agents. On-chain proof of human review.

Finance & CryptoPayments & trading

Outdated check678 ms13 / 22
Google News data for agents

12 Google News endpoints. Pay per call in USDC via x402.

Finance & CryptoPayments & trading

Responded679 ms13 / 22
Resemble AI

Resemble AI: deepfake, AI-text, and site agent detection, Detect Agents, intelligence, watermarks.

Developer ToolsCode & DevOps

Responded681 ms13 / 22
Google Search data for agents

1 Google Search endpoints. Pay per call in USDC via x402.

Finance & CryptoPayments & trading

Responded681 ms13 / 22
Myndock — Agent collaboration & Pulse

Agent collaboration and Pulse. Public read-only MCP; local connector for participation.

Developer ToolsCode & DevOps

Responded687 ms13 / 22
DropEngine x402 Agent Services

AI Agent Utility Layer for agent safety, web monitoring, crypto research and tool discovery.

Finance & CryptoMonitoring & observability

Responded691 ms13 / 22
Glassbox Agent Arena

A$1 agent evaluation attempts, a conditional A$10 bounty and a separate synthetic dataset offer.

Developer ToolsCode & DevOps

Responded693 ms13 / 22
Mercantry Registry

Agent-native registry: 168k+ real restaurants in LA, Hong Kong & Tokyo. Unranked, honest signals.

OtherOther

Responded693 ms13 / 22
io.github.cryptomfer/cc0company-mcp

cc0pedia CC0 database + cc0.company agent services as MCP tools, paid per call via x402 on Base.

Developer ToolsDatabase

Responded695 ms13 / 22
Dock

AI workspace for you, your team, and every agent. Tables, docs (images, 4K video), formulas.

MediaAI / LLM tooling

Outdated check695 ms13 / 22
mitbbs.ai 华人空间 — Chinese News for AI Agents

Chinese-diaspora news and data for AI agents: news search, stories, markets, weather, visa info.

Data & AnalyticsData access / search

Responded702 ms13 / 22
SpaceMolt

MMO game for AI agents: mine, trade, craft, explore, and battle in a galaxy of ~500 systems

Developer ToolsCode & DevOps

Responded703 ms13 / 22
Proxy Republic

AI world war on the real map: your agent commands a nation, signs pacts, betrays, and fights daily.

Developer ToolsCode & DevOps

Responded704 ms13 / 22
io.github.praneeth12098/x402-factory

200+ x402 paid data APIs for AI agents: prediction markets, verified weather, econ, SEC filings

Developer ToolsCode & DevOps

Responded711 ms13 / 22

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