MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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

3366 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
Crypto Market Pulse

Pay-per-call crypto data on Base: market pulse, prices, chain snapshot, USDC stats. x402 USDC.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Crypto Market Pulse & Base USDC Stats

Pay-per-call agent tools on Base: market pulse, USDC stats, crypto prices, JSON repair, DNS, URLs.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
Crypto News Feed API

Real-time crypto news with sentiment scores, token mentions. CoinGecko + CryptoPanic. x402.

Finance & CryptoCode & DevOps

Outdated checkNot measured4 / 22
CSV to JSON API

Parse CSV to JSON array. Auto-detect delimiter, headers. x402 micropayment.

Developer ToolsCode & DevOps

Outdated checkNot measured4 / 22
Currency Converter API

Fiat and crypto currency conversion — ECB + CoinGecko rates. x402 micropayment.

Finance & CryptoCode & DevOps

Outdated checkNot measured4 / 22
Cyprus Payments (Stripe — cards / Apple Pay)

Cyprus payments for AI agents — cards / Apple Pay via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Czechia Payments (Stripe — cards / Apple Pay)

Czechia payments for AI agents — cards / Apple Pay via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
DataBR — API de Dados Públicos Brasileiros

Brazilian public data API for AI agents. BCB, IBGE, CVM, B3, compliance. x402 payments on Base.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
DeepBlue Crypto Signals

10 crypto tools for AI agents: BTC/ETH/SOL/XRP momentum signals, Polymarket odds, sentiment, x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
DeepBlue Trading Intelligence

Live crypto trading signals, sentiment, Polymarket analytics. Free demo + x402 micropayments.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
DeFi Liquidation Oracle API

Real-time DeFi liquidation risk levels by protocol and asset. DeFiLlama-powered. x402.

Finance & CryptoCode & DevOps

Outdated checkNot measured4 / 22
DeFi Yield Finder API

Best DeFi yields by token — APY, TVL, risk, protocol. DeFiLlama-powered. x402.

Finance & CryptoCode & DevOps

Outdated checkNot measured4 / 22
Denmark Payments (Stripe — MobilePay)

Denmark payments for AI agents — MobilePay via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
DEX Swap Quotes API

Best swap quotes across DEXes (Uniswap, SushiSwap, Aerodrome). Base & Ethereum. x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Diff Checker API

Compare two texts line-by-line — additions, deletions, unchanged. x402 micropayment.

Developer ToolsCode & DevOps

Outdated checkNot measured4 / 22
Outdated checkNot measured4 / 22
dino.markets

Matched Kalshi and Polymarket markets across sports, crypto, weather, and economics over MCP.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
DNS Lookup API

DNS record lookup — A, AAAA, MX, TXT, CNAME, NS via Cloudflare. x402 micropayment.

Developer ToolsCode & DevOps

Outdated checkNot measured4 / 22
Domain Intelligence API

WHOIS, DNS records, SSL certificate data for any domain in one call. x402.

Developer ToolsCode & DevOps

Outdated checkNot measured4 / 22
EDGAR Odd-Lots Streamable MCP

Live SEC EDGAR Form 4 odd-lot tender offer signals with x402 USDC settlement on Base.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Egypt Payments (Paymob — cards / mobile wallets)

Egypt payments for AI agents — cards / mobile wallets via Paymob. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Email Deliverability Audit API

Audit email domain deliverability: SPF, DKIM, DMARC, MX. Score 0-100. x402.

Developer ToolsCommunication & messaging

Outdated checkNot measured4 / 22
Email Finder API

Find email addresses from name and company domain. x402 paid.

Developer ToolsCommunication & messaging

Outdated checkNot measured4 / 22
Email Send API

Send emails programmatically via Resend. Text and HTML. x402 micropayment.

Developer ToolsCommunication & messaging

Outdated checkNot measured4 / 22

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