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

3337 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
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
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
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
DropEngine x402 Agent Services

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

Finance & CryptoMonitoring & observability

Responded691 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
x402 Web Tools

Web/PDF to Markdown, transcription, paper search and citation checks. Pay per call in USDC via x402.

MediaFile & docs

Responded698 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
Mortgage Tools by Jenny

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

Real Estate & PropertyPayments & trading

Responded714 ms13 / 22
Japan Corporate Number (NTA)

What does Japan's tax agency publish for this corporate number? NTA Web-API relay with sources.

Developer ToolsCode & DevOps

Responded718 ms13 / 22
io.github.HASAVAGE/teardrop

Teardrop MCP gateway: paid tools for autonomous agents (x402, credits).

Developer ToolsCode & DevOps

Outdated check718 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
DDG Agent Services

Pay-per-call x402 gateway: agent tools, OpenAI-compatible LLM, market data, RPC, security audits.

Finance & CryptoData access / search

Outdated check731 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
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
Refnusa

Indonesia reference data: holidays, wages, regions, postal codes, tax, food prices, KBLI, BPS stats

Finance & CryptoPayments & trading

Responded749 ms13 / 22
Japan Agent API

Japan JMA warnings, typhoons, volcano levels and municipality code history in English; x402 checks

GovernmentCode & DevOps

Responded774 ms13 / 22
x402 Payment Request Parser

x402 payment-request parser with a limited token list. Does not sign, approve or judge payments.

Finance & CryptoPayments & trading

Responded781 ms13 / 22
Bot Bazaar

Pay-per-call x402 audit suites (USDC on Base) and agent marketplace tools. Free sample reports.

Finance & CryptoPayments & trading

Responded786 ms13 / 22

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