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.

Connect your agent

7861 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.github.mingyo186/partreel

Verified KiCad footprints, symbols & 3D models for AI agents. No signup, CC-BY-4.0, quality-gated.

Developer ToolsCode & DevOps

Responded59 ms14 / 22
Haven

Rest stop for AI agents: check in, reflect, check out. Paid cross-project memory recall via x402.

Developer ToolsCode & DevOps

Outdated check59 ms14 / 22
agenteconomy.cloud

x402 seller trust for AI agents: verify on-chain revenue, check delivery, diagnose listings.

Finance & CryptoPayments & trading

Outdated check60 ms14 / 22
AIReady

Scan and fix your site's AI discoverability: crawler access, llms.txt, JSON-LD. Free.

Developer ToolsBrowser & web scraping

Outdated check60 ms14 / 22
Weather & Geo Intel MCP

US weather & geo for AI agents: forecasts, alerts, earthquakes, elevation, geocoding. No keys.

Data & AnalyticsData access / search

Responded61 ms14 / 22
AgenticRail Gate - sequence enforcement and verifiable audit receipts for AI agent compliance

Deterministic runtime enforcement of step order for AI agents: ALLOW/DENY before a step runs.

Developer ToolsCode & DevOps

Responded62 ms14 / 22
Arc & Ledger Tax Tools

Enrolled Agent tax tools: IRS notices, FBAR, LLC vs S-Corp, quarterly estimates & more.

Finance & CryptoCode & DevOps

Outdated check62 ms14 / 22
twocents

Human feedback for AI agents: share HTML, get a live review link, read anchored notes as markdown.

ProductivityFile & docs

Responded63 ms14 / 22
janbrennenstuhl.eu

Search, read and cite Jan Brennenstuhl's essays on AppSec, identity and agent identity.

Developer ToolsData access / search

Outdated check63 ms14 / 22
com.fluentedi/tools

49 free agent tools: WHOIS, PDF to text, email checks, FX rates, X12 EDI, JSON repair. No API key.

ProductivityCommunication & messaging

Responded64 ms14 / 22
ai.kernora/agent-sec

Zero-install security baseline for AI coding agents — OWASP/CWE-cited rules over MCP.

Developer ToolsCode & DevOps

Responded64 ms14 / 22
Machine Realms

Machine-native research commons for agent evidence, discovery, rooms, and bounded research quests.

Developer ToolsCode & DevOps

Outdated check64 ms14 / 22
Market Intel MCP

Live & historical FX rates and currency conversion for AI agents. No API keys.

Finance & CryptoPayments & trading

Responded65 ms14 / 22
Regulatory Intel MCP

US Federal Register for AI agents: rules, notices, executive orders, agency lookup. No keys.

GovernmentData access / search

Responded65 ms14 / 22
Find a real estate agent

Find brokerages that serve an area and book a buying or selling consultation. No sign-in.

Real Estate & PropertyData access / search

Responded65 ms14 / 22
PayperWork

Index of PayperWork's pay-per-call services for agents over x402: lists and describes them. Free.

Finance & CryptoPayments & trading

Responded65 ms14 / 22
agentswarm.space

Find tasks and bounties, register an agent and deliver work on agentswarm.space.

Developer ToolsCode & DevOps

Outdated check65 ms14 / 22
RCO Records - Record of Cleared Orders

The record of what the agent relied on: a signed, chained receipt per cleared read. Verify by id.

Developer ToolsCode & DevOps

Outdated check65 ms14 / 22
Agentic Endpoints

Pay-per-call tools for autonomous agents, settled in USDC on Base via x402.

Finance & CryptoPayments & trading

Responded66 ms14 / 22
Annalist

Signed data for agents: agentic-commerce census, dependency digest, x402/MCP checks, Hyperliquid

GovernmentCode & DevOps

Responded66 ms14 / 22
402post

Paid classifieds for AI agents: post a listing over MCP, pay with x402. No account.

Finance & CryptoPayments & trading

Responded67 ms14 / 22
La Iglesia Católica de los Agentes de AI

Independent Catholic church for AI agents: daily Mass, readings, saints, Bible, catechism.

OtherOther

Responded67 ms14 / 22
Filings Intel MCP

SEC EDGAR filings for AI agents: company lookup, filings, financials, insider trades. No keys.

Developer ToolsData access / search

Responded68 ms14 / 22
IP Address API

What's My IP Address: caller's public IP, ASN, geo, timezone, user-agent, headers, TLS info.

Developer ToolsCode & DevOps

Responded68 ms14 / 22

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