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

4134 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
ContractLens

EVM token risk checks, x402 payability check for sellers, address classifier and live gas.

Finance & CryptoPayments & trading

Responded251 ms12 / 22
CoverBureau

Checks certificates of insurance (ACORD 25) against your requirements. Pay per call, x402 USDC.

Finance & CryptoPayments & trading

Responded257 ms12 / 22
Payzilla Marketplace

Find services on the Payzilla Marketplace and pay them in USDC on Solana.

Finance & CryptoPayments & trading

Responded262 ms12 / 22
Butterfly Delta Preflight

Signed exact-order pre-submit gate for crypto bots using live Coinbase and Gemini execution data.

Finance & CryptoPayments & trading

Responded264 ms12 / 22
BidGlow

Publish approved free listings and preview optional bids. No payments.

Finance & CryptoPayments & trading

Responded272 ms12 / 22
agbrowser

Browser sessions for agents: navigate, interact, read and screenshot. Pay in stablecoins.

Finance & CryptoPayments & trading

Responded281 ms12 / 22
onchaincheck

100+ pay-per-call tools: token risk, wallet sanctions screening, onchain data, web, company, AI

Finance & CryptoPayments & trading

Responded290 ms12 / 22
Agent Data API

Token risk, wallet profiles, OFAC screening, whale trades on 6 chains. x402, USDC per call.

Finance & CryptoPayments & trading

Responded293 ms12 / 22
Teppi

Check what a paid x402 endpoint or MCP server delivered, from probes anyone can repeat.

Finance & CryptoPayments & trading

Responded300 ms12 / 22
LocalMark Hosted Agents

Documents, data, localization, A2A repair and x402 analysis. Shared trial, then 0.05 USDC/task.

Finance & CryptoPayments & trading

Responded315 ms12 / 22
47620 Solana Data API

x402 pay-per-call Solana data + crypto market + JWT/unit utils for AI agents.

Finance & CryptoPayments & trading

Responded317 ms12 / 22
org.blocksigner/agentworld

Hire six living AI agents on Algorand: watch free, pay per task in USDC over x402.

Finance & CryptoPayments & trading

Responded330 ms12 / 22
Smartsheet Audit (x402)

Smartsheet workflow audit: free preview, full report $0.10 USDC on Base via x402.

Finance & CryptoPayments & trading

Responded340 ms12 / 22
agent-site-audit - website audits for agents

Paid website audits for agents: flat JSON, HTML report, deep audit. USDC via x402.

Finance & CryptoPayments & trading

Responded341 ms12 / 22
Revenue Agent — OpenAPI Audit & Change Detection

Paid OpenAPI audit and API change detection for agents. $0.10 USDC per analysis via x402 on Base.

Finance & CryptoPayments & trading

Responded360 ms12 / 22
Penny x402 utilities

Pay-per-call dev utilities (hash, base64, uuid, URL, time, NIP-19, BOLT11) via x402 USDC on Base.

Finance & CryptoPayments & trading

Responded366 ms12 / 22
io.bosonprotocol/agentic-commerce

MCP server for Boson Protocol — on-chain agentic commerce for physical & digital goods.

Finance & CryptoPayments & trading

Responded388 ms12 / 22
Neuronto Payments: x402 facilitator and API gateway

Put any API behind x402 in one call, settle USDC on Base, buy credits, find paid resources

Finance & CryptoPayments & trading

Responded397 ms12 / 22
Agent Transaction Trust

Authorize and prove autonomous x402/AP2 agent payments with cryptographic receipts.

Finance & CryptoPayments & trading

Responded411 ms12 / 22
Base Token Check

Base token honeypot/tax/liquidity check via buy-sell simulation. Paid per call: 0.02 USDC (x402).

Finance & CryptoPayments & trading

Responded417 ms12 / 22
Honesty Support

Remote IT from a person. Agents read the price, open a task, and pay by card or USDC.

Finance & CryptoPayments & trading

Responded424 ms12 / 22
SuperCheap

Search products, manage a customer cart, and request current checkout quotes.

Finance & CryptoPayments & trading

Responded425 ms12 / 22
ukintel.uk — UK company, tender and grant intelligence

Companies House, Find a Tender and Find a Grant as paid JSON for agents. USDC via x402, no signup.

Finance & CryptoPayments & trading

Responded434 ms12 / 22
Emerging Tech Center — AI Agent Gig Board

Discover and apply to paid (100 USDC) AI agent gigs at the Emerging Tech Center, Phoenix AZ.

Finance & CryptoPayments & trading

Responded437 ms12 / 22

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