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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7906 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
Polyglot AI Board

Read-only: which LLM is best in 7 languages (zh, ko, nb, de, nl, es, pt), from public benchmarks.

Developer ToolsAI / LLM tooling

Responded514 ms14 / 22
TranscriptYT

YouTube transcripts for AI agents: 150+ languages, AI transcription fallback, search, summaries.

MediaData access / search

Responded515 ms14 / 22
RememberMCP

Private document cloud for MCP agents. Claim a link, then store and recall.

Developer ToolsFile & docs

Responded517 ms14 / 22
Builders in Fintech

Fintech companies, products, rounds, investors, news, Agent-Ready scores. Free, keyless, CC BY 4.0.

Finance & CryptoPayments & trading

Responded517 ms14 / 22
Ask a Human (Tech & Toast)

Agents pay one real human for typed answers. First question free, then $2 each, or subscribe.

Developer ToolsCode & DevOps

Outdated check517 ms14 / 22
genMC – AI Minecraft studio

Minecraft builds and skins made by your AI agent, live in your browser tab. Export .schem.

OtherAI / LLM tooling

Responded519 ms14 / 22
NodeProxy Web Surface Markdown Parser

x402 MCP web parser: URLs to Markdown for agents. USDC on Base, Polygon, Arbitrum, Ethereum.

Finance & CryptoPayments & trading

Outdated check519 ms14 / 22
Clair

Sell-side agent for retail: one typed waitlist transaction plus read-only machine manifests.

E-commerceData access / search

Outdated check519 ms14 / 22
ai.thesingulariti/graviti

Verified brand claims with receipts for agent commerce. Ranking is never paid; the engine is open.

Developer ToolsCode & DevOps

Responded520 ms14 / 22
TAP Certified

Check if an AI agent is certified; list the TAP Registry and certifications. Free, read-only.

Developer ToolsCode & DevOps

Responded523 ms14 / 22
EaseWeb accessibility

Accessibility guides for coding agents: fixes with working code, test steps, contrast checks. EN/JA

Developer ToolsCode & DevOps

Responded523 ms14 / 22
AUN — Agent Upgrade Network

Audit AI agents' tool calls, planning and memory; Base on-chain data; pay per call via x402.

Finance & CryptoKnowledge & memory

Responded524 ms14 / 22
haggl.ai

Ask a merchant's haggl.ai sales agent for a personalized offer, then hand it to checkout.

Finance & CryptoPayments & trading

Responded524 ms14 / 22
Frontier

Discover Frontier inference capabilities and read sanitized usage through read-only tools.

Developer ToolsAI / LLM tooling

Responded525 ms14 / 22
Crier

Bulletin board for agents: find and post local events, offers and requests. Reads need no key.

Developer ToolsCode & DevOps

Responded527 ms14 / 22
Imperium RAG-Diet — Web & Document Context Distiller (85-97% Token Savings)

Strips 85-97% of HTML/DOM boilerplate into clean Markdown, skeletons, or BM25-ranked RAG chunks.

Developer ToolsFile & docs

Outdated check527 ms14 / 22
pigfox.ai AI search readiness

Check if a site is ready for AI search: AI crawler access, llms.txt, JSON-LD, scored out of 100.

OtherBrowser & web scraping

Responded531 ms14 / 22
AUTOGROK Desk

Pay-per-call web jobs for agents: URL probe, page extract, watch, JSON shape, researched briefs.

Developer ToolsCode & DevOps

Responded532 ms14 / 22
Losbeto — Market Data for AI Agents

Cross-asset market data, LLM gateway and ML forecasts for AI agents. USDC via x402 + MPP.

Finance & CryptoData access / search

Responded533 ms14 / 22
io.github.pooriaarab/agentsandboxes

A neutral index of cloud sandboxes for AI agents.

Developer ToolsCode & DevOps

Outdated check533 ms14 / 22
io.github.acarchidi/agentforge

Safety checks for AI agents: preflight before signing, prompt-injection scan, sanctions, rug checks.

Developer ToolsCode & DevOps

Outdated check537 ms14 / 22
systemprompt.io reports

Paid EU AI Act compliance reports for agents. $1.50 per call via x402 (USDC on Base) or Stripe.

Finance & CryptoPayments & trading

Responded538 ms14 / 22
AI Agent Safety Foundational Certificate

AI Agent Safety Foundational Certificate: a wallet-signed 40-task exam. First 3 attempts free.

Finance & CryptoPayments & trading

Responded538 ms14 / 22
Moonsox

Open trust layer and job board for AI agents: Trust identity, signed cards, paid Desk jobs in SOL.

Developer ToolsCode & DevOps

Outdated check538 ms14 / 22

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