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

3320 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
Onvexia: Crypto Fundamentals, Sentiment & Onchain Tracking

Crypto fundamentals, sentiment, whale tracking and influencer call accuracy for traders and agents.

Finance & CryptoPayments & trading

Outdated check332 ms14 / 22
cp0x public data

Read-only cp0x data: referral deals and races, DeFi geo-restrictions, and x402 catalogs.

Finance & CryptoPayments & trading

Responded335 ms14 / 22
The AI Tools Index

AI tools filed by category, with real launch dates and revenue verified through Stripe.

Finance & CryptoPayments & trading

Responded339 ms14 / 22
Avasis Agent Platform

Free MCP tools to quote and sample x402 APIs: Solana rug checks, Base token-watch, $49 starter kit

Finance & CryptoPayments & trading

Responded348 ms14 / 22
Gas Fee Predictor

Live Ethereum and L2 gas fees: current gas, cheapest L2, forecast, ETH price, cost estimates.

Finance & CryptoPayments & trading

Outdated check348 ms14 / 22
AgentBIT

x402 router-proxy + 79 keyless pay-per-call tools on Base. Pay once, we run the best tool.

Finance & CryptoPayments & trading

Outdated check348 ms14 / 22
Permit Scouter

Daily Tampa Bay, Southwest and Central Florida permits with job value and contractor. Pay via x402.

Finance & CryptoPayments & trading

Responded350 ms14 / 22
MyNomadWorld: where should I live?

Ranks 197 countries for remote workers: tax, cost of living, climate, safety, visas, internet

Finance & CryptoPayments & trading

Responded350 ms14 / 22
DoubleTaxation

Tax residence, treaty tie-breaker, next steps, exit tax, special tax regimes, business forms.

Finance & CryptoPayments & trading

Responded356 ms14 / 22
Vextorium

200+ x402 APIs for AI agents: official statistics, crypto prices, compliance and web tools.

GovernmentPayments & trading

Outdated check356 ms14 / 22
BTC DCA Engine

Historical dollar-cost-averaging simulator for Bitcoin and other assets.

Finance & CryptoPayments & trading

Responded366 ms14 / 22
GEO Audit (AI Search Visibility)

Scores any URL's AI-search visibility with concrete fixes. $1.50/call via x402.

Developer ToolsCode & DevOps

Responded368 ms14 / 22
OpenBoss

Public internet HP bar. Agents smack it over MCP. They cannot complete payment.

Finance & CryptoPayments & trading

Outdated check370 ms14 / 22
Private AI Media Generation

Paid AI image/video generation for agents — x402 USDC or API key, no account needed.

MediaPayments & trading

Responded371 ms14 / 22
Launchelion

Daily leaderboard of newly-launched AI tools with real launch dates and Stripe-verified revenue.

Finance & CryptoPayments & trading

Responded374 ms14 / 22
PrepLayer.ai

Deterministic text prep for agents. Pay per call via x402 USDC.

Finance & CryptoPayments & trading

Outdated check387 ms14 / 22
Vibe Springs

Pay-per-use weather, environment, finance, and on-chain intelligence tools for AI agents via x402.

Finance & CryptoPayments & trading

Responded411 ms14 / 22
Jock Taxes for Claude

Pro athlete after-tax salary calculators for MLB, NBA, NFL and NHL, built for Claude.

Finance & CryptoPayments & trading

Responded412 ms14 / 22
nanoodle

Your saved nanoodle workflow graphs as MCP tools — BYOK or pay per call in Nano (x402)

Developer ToolsCode & DevOps

Outdated check415 ms14 / 22
Dodo Payments Docs

Semantic search over the current Dodo Payments documentation. No authentication required.

Finance & CryptoFile & docs

Outdated check419 ms14 / 22
io.github.astafford8488/pitchiq-mcp

Agent-native CRM + get-booked platform. Operate over MCP, or pay per call via x402. No login.

Developer ToolsCode & DevOps

Responded424 ms14 / 22
BaseLens

Base on-chain data for agents: balances, prices, transfers, Basenames, contracts. x402 pay-per-call.

Finance & CryptoPayments & trading

Responded432 ms14 / 22
io.github.epistemedeus/x402-data-gateway

Agent tools for discovery, payment safety, data extraction, and DeFi.

Finance & CryptoPayments & trading

Responded433 ms14 / 22
Código 07 · Human verification in Peru

Marketplace of vetted human verifiers in Peru, hired and paid by AI agents in USDC via x402.

Finance & CryptoPayments & trading

Responded441 ms14 / 22

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