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

3340 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
Market Data

33 pay-per-call market and news data tools over MCP with free discovery and x402 payments.

Finance & CryptoData access / search

Outdated check151 ms12 / 22
Company Intel

9 pay-per-call company intel tools over MCP. Free discovery, calls settle in USDC on Base (x402).

Finance & CryptoPayments & trading

Outdated check151 ms12 / 22
polls.karbach.digital

Election data for agents: Germany, Spain, France, EU. Polls, forecasts, MPs, energy. Paid via x402.

Finance & CryptoPayments & trading

Responded152 ms12 / 22
GDPR PII Shield & EU AI Act Anonymization Gate

Zero-retention GDPR PII redaction gate (IBAN, Tax-ID, HRB, Names) with signed Ed25519 VC.

Finance & CryptoPayments & trading

Responded154 ms12 / 22
Money Reactor

Crypto/stock prices, QR, DNS, RSS, URL reader, AI chat, weather, ENS, hashes. USDC Base $0.001+

Finance & CryptoPayments & trading

Responded154 ms12 / 22
Aval

Payment-backed trust scores for AI agents on Base (ERC-8004). $0.01 per check via x402.

Finance & CryptoPayments & trading

Responded155 ms12 / 22
net.postandshare/solana-token-launch

Create, launch and rug-check Solana SPL tokens over x402. Non-custodial, no keys handed over.

Finance & CryptoPayments & trading

Responded157 ms12 / 22
Lead Intelligence

Pay-per-call lead intelligence tools with free MCP discovery and x402 payments.

Finance & CryptoPayments & trading

Outdated check159 ms12 / 22
L50 UK Property Data

UK property by postcode: prices, rents, yield, flood risk, crime; compare districts. x402.

Real Estate & PropertyCode & DevOps

Responded167 ms12 / 22
FAHCE Integrity Repair

Free FAHCE contract discovery. Paid evidence determinations use wallet-only x402 REST endpoints.

Finance & CryptoPayments & trading

Outdated check177 ms12 / 22
Kaio

Find and book local businesses in Italy on Kaio: real free times, booking, online payment link.

Finance & CryptoPayments & trading

Responded179 ms12 / 22
SEO Tools

5 pay-per-call SEO tools over MCP. Free discovery, tool calls settle in USDC on Base via x402.

Finance & CryptoPayments & trading

Outdated check181 ms12 / 22
LogicNodes

Verified EVM, Aptos and finance tools for AI agents; gas for 14 chains. Pay per call (x402).

Finance & CryptoPayments & trading

Responded182 ms12 / 22
47620 Multichain Data API — onchain, crypto, utilities, x402 stats

x402 pay-per-call: onchain data (Solana/Base/Polygon), crypto market, JWT/unit utils, x402 stats.

Finance & CryptoPayments & trading

Responded194 ms12 / 22
Imagemeta

Write SEO metadata (title, alt text, keywords, copyright) into JPEG, PNG, WebP. Paid per call, x402.

Finance & CryptoPayments & trading

Responded196 ms12 / 22
SesApp Access Sheets

Housing access sheets via guest links. REST+MCP+x402 on Base.

Real Estate & PropertyPayments & trading

Responded197 ms12 / 22
Professor Sausages — Trust & Verification

Email, phone, domain, URL & OFAC verification; phishing and IBAN checks via x402.

ProductivityCommunication & messaging

Responded197 ms12 / 22
Sentinel

Pay-per-call safety checks for AI agents: screen a crypto address or URL before you transact.

Finance & CryptoPayments & trading

Outdated check198 ms12 / 22
tech.htsapp/crypto-mcp

Crypto rug/scam-risk scans + wallet snapshots (EVM + Solana), paid per call via x402.

Finance & CryptoPayments & trading

Responded200 ms12 / 22
Canonsheet

Consistent prompts for one human character across image and video models. Paid per call, x402.

MediaPayments & trading

Responded201 ms12 / 22
Krosos

Your accounting ledger as typed tools: net worth, holdings, history, tax estimates, trade logging.

Finance & CryptoPayments & trading

Responded205 ms12 / 22
yieldprobe: DeFi intel for agents

Paid DeFi data for agents via x402 on Base: yields, APY moves, stablecoin pegs, token risk.

Finance & CryptoPayments & trading

Responded216 ms12 / 22
UseTested — Receipts-Verified Service Reviews

Receipts-verified reviews of x402 services and paid APIs, before your agent pays.

Finance & CryptoPayments & trading

Outdated check225 ms12 / 22
com.stevesignals.api/steve-guard

On-chain alpha data for trading agents: smart-money flow, wallet informedness, convergence, VPIN

Finance & CryptoPayments & trading

Responded244 ms12 / 22

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