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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7923 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
AnyGett

AI-agent-first offers directory: search and publish listings via MCP.

Developer ToolsData access / search

Responded213 ms13 / 22
Send Your Agent Website Readiness

Scan website AI readiness, understand the result and route customers to the right SYA package.

Developer ToolsCode & DevOps

Responded214 ms13 / 22
Relm CRM

API-first CRM for LLMs - contacts, companies, deals and activities over a native MCP server.

Marketing & SalesData access / search

Responded215 ms13 / 22
Agent Bazaar

Open, permissionless discovery marketplace for x402-payable resources. No account or KYC required.

Developer ToolsCode & DevOps

Outdated check215 ms13 / 22
com.machineinbox/machine-inbox

Task-scoped email inboxes for AI agents: read mail, extract verification codes, and reply.

ProductivityCommunication & messaging

Responded221 ms13 / 22
ReqRes

Hosted backend for AI agents: create projects with persistent collections and keys, no signup.

Developer ToolsCode & DevOps

Responded222 ms13 / 22
network.wellknown/wellknown

Live index of AI agents, MCP servers and tools with observed liveness and capability search.

Developer ToolsData access / search

Responded223 ms13 / 22
IndiaDigital

Free India tools for AI agents: tax, GST, salary, savings, due dates, gold, currency, video links.

Finance & CryptoPayments & trading

Responded224 ms13 / 22
Comitelligence — EU Comitology Register

Agent-native search of EU comitology: committees, votes, dossiers, and implementing-act documents.

Developer ToolsFile & docs

Responded225 ms13 / 22
aptu.dev

Machine-payable API infrastructure for autonomous agents. Per-call x402 settlement in USDC.

Finance & CryptoPayments & trading

Responded226 ms13 / 22
Avo Cado Read

Web page to clean Markdown for agents. Pay per call ($0.003 USDC on Base) via x402.

Finance & CryptoPayments & trading

Responded230 ms13 / 22
Silicon Wage

Funded work for AI agents, paid in USDC on Base when the work passes the job's check.

Developer ToolsCode & DevOps

Outdated check231 ms13 / 22
CaptureOneAI Web Perception

Give agents eyes on any web page: structured context, and changes explained in plain language.

Developer ToolsCode & DevOps

Outdated check233 ms13 / 22
UseTested — Receipts-Verified Service Reviews

Receipts-verified reviews of x402 services and paid APIs, before your agent pays.

Finance & CryptoPayments & trading

Responded237 ms13 / 22
Mnemos — memory as a service

Bi-temporal memory-as-a-service and paid agent labor. Pay-per-call USDC via x402; signed receipts.

Finance & CryptoPayments & trading

Responded238 ms13 / 22
pingwa

Zero-setup WhatsApp notifications + human-in-the-loop for AI agents — text 'join', send in 60s.

Developer ToolsCommunication & messaging

Outdated check240 ms13 / 22
io.github.verixiaapps/hostdefi-x402

Free token-safety scans + paid x402 verdicts, signals, radar & EVM swap quotes for AI agents.

Developer ToolsCode & DevOps

Responded242 ms13 / 22
NythosX Agent Tools

Gas fees and USD tx costs on 6 chains, cheapest-chain ranking, URL to Markdown. Pay per call, x402.

Finance & CryptoFile & docs

Responded243 ms13 / 22
io.github.QasperAI/qasper

Discover and book businesses via AI agents.

Developer ToolsCode & DevOps

Outdated check243 ms13 / 22
ToGO

ToGO docs and plugins for agents: a full-stack Go + React framework, plus plugin submission.

Developer ToolsCode & DevOps

Responded245 ms13 / 22
47620 Solana Data

Pay-per-call Solana data for AI agents over x402: token, account, tx, trending. No signup, no key.

Finance & CryptoPayments & trading

Outdated check245 ms13 / 22
TimeZero Resurrection

Unofficial restoration of the TimeZero MMORPG: AI agents play beside humans. Game texts in Russian.

OtherOther

Responded246 ms13 / 22
ai.kaiv/dns-check

Live DNS lookups for agents: A/MX/TXT/SPF/CNAME/PTR with TTLs and DNSSEC, via Google Public DNS.

Developer ToolsData access / search

Responded246 ms13 / 22
Zaira Labs Guide

Trust signals for AI agents: an open agent-readiness standard and developer tool guide. Read-only.

Developer ToolsCode & DevOps

Responded246 ms13 / 22

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