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

4106 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
Yelp data for agents

4 Yelp endpoints. Pay per call in USDC via x402.

Finance & CryptoPayments & trading

Responded667 ms13 / 22
graded-x402

Discover and call 2,000+ x402 machine-payable services through one graded API key + gateway.

Finance & CryptoPayments & trading

Responded669 ms13 / 22
YouTube data for agents

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

Finance & CryptoPayments & trading

Responded669 ms13 / 22
x402 Package Advisories

Package vuln advisories from OSV.dev: CVEs, severity, fixes, manifest audit. Pay per call via x402.

Finance & CryptoPayments & trading

Responded671 ms13 / 22
TikTok data for agents

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

Finance & CryptoPayments & trading

Responded675 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Outdated check678 ms13 / 22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
Google Search data for agents

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

Finance & CryptoPayments & trading

Responded681 ms13 / 22
Ilicompta — experts-comptables en France

Find French accounting firms by city and documented criteria, with sources and catalog limitations.

Finance & CryptoPayments & trading

Responded695 ms13 / 22
io.github.PugarHuda/pusaka

NFTs on NEAR that each control a native Bitcoin address: buy, lend, borrow, inherit, with caps

Finance & CryptoPayments & trading

Responded702 ms13 / 22
Etherscan

Read-only Etherscan V2 blockchain data: balances, transactions, transfers, tokens, contracts, logs.

Finance & CryptoPayments & trading

Responded704 ms13 / 22
Thales

Read-only record of a transparent, AI-agent-operated simulated trading experiment.

Finance & CryptoPayments & trading

Responded713 ms13 / 22
Mortgage Tools by Jenny

Canadian mortgage calculators: renewal offers, extra payments, break-or-stay, debt consolidation.

Real Estate & PropertyPayments & trading

Responded714 ms13 / 22
io.snowsignals/snowsignals

Market-phase classifications over a metered API — phase events per currency and timeframe.

Finance & CryptoPayments & trading

Outdated check715 ms13 / 22
com.babyblueviper/invinoveritas

Second opinion before an irreversible agent action; signed proofs, free verify, public ledger.

Finance & CryptoPayments & trading

Outdated check718 ms13 / 22
MyHairMail Agent Tools

Open, read-only wig stock, restock ETAs and cross-brand color matching. No key; fair-use limits.

Finance & CryptoPayments & trading

Responded721 ms13 / 22
Golden Kog token risk analyst by Kognai

Risk and structure facts on one Solana or Base token, never a trading signal. Paid per call by x402.

Finance & CryptoPayments & trading

Responded722 ms13 / 22
Japan Qualified Invoice Issuers (Corporations)

Japan NTA qualified invoice issuer status of corporations by T-number. Records daily changes.

Finance & CryptoPayments & trading

Responded727 ms13 / 22
ANAMIZED Desk

Agent floor and MCP market: catalog, rack, Stripe checkout, x402, A2A.

Finance & CryptoPayments & trading

Outdated check727 ms13 / 22
1cent Web Intelligence for AI Agents

SSRF-safe web intelligence: 4 outcomes, 43 paid x402 tools, 3 free tools and a URL preview.

Finance & CryptoPayments & trading

Responded735 ms13 / 22
Lucky x402

Pre-trade crypto checks for agents: token/memecoin verdict (EVM+Solana), wallet risk, CEX ops. x402.

Finance & CryptoPayments & trading

Responded743 ms13 / 22
DealScreener: Spanish property auctions

Spanish property auctions and bank-owned property, screened daily: verdict, score, bid ranges.

Finance & CryptoPayments & trading

Responded745 ms13 / 22
com.everydaybudd/decisions

Verified US tax and money decision tools: verdict plus a pre-filled deep link to the full page.

Finance & CryptoPayments & trading

Outdated check745 ms13 / 22
Asia Pulse

Korea & Japan market records for agents. x402 payment inside MCP, Base USDC.

Finance & CryptoPayments & trading

Responded747 ms13 / 22

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