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

4698 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
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
ChangeNOW

Quote, create and track cross-chain crypto swaps. Non-custodial exchange, no account, no KYC.

Finance & CryptoPayments & trading

Responded413 ms14 / 22
Service Fusion MCP by usefulapi

Read Service Fusion customers, jobs, estimates, invoices and schedule; create customers and jobs.

Finance & CryptoPayments & trading

Responded413 ms14 / 22
Dodo Payments Docs

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

Finance & CryptoFile & docs

Outdated check419 ms14 / 22
AccountsOS

Query your live AccountsOS books: balances, transactions, VAT, deadlines, invoices.

Finance & CryptoPayments & trading

Outdated check421 ms14 / 22
LuckPanda Document Tools

Create invoices, quotes, receipts and credit notes with GST or VAT, as prefilled links or PDFs.

Finance & CryptoPayments & trading

Responded424 ms14 / 22
InvoiceVerify

Check Peppol receivability (incl. Belgian client lists) and validate EU e-invoices. Free check.

Finance & CryptoPayments & trading

Responded429 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
Agentropolis

Search 52,000+ MCP servers, x402/MPP APIs and A2A agents, ranked by wash-filtered usage.

Finance & CryptoData access / search

Responded435 ms14 / 22
Pro UPI QR

UPI payment links and QR codes, UPI error help, and GST, MSMED and MDR calculators for India.

Finance & CryptoPayments & trading

Responded438 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
io.github.wizard-exe/stoxly

Free stock, ETF & crypto analysis: 10-point score, verdict and key metrics for any ticker.

Finance & CryptoPayments & trading

Responded444 ms14 / 22
Cited Brief

Paid web research tools: cited briefs, quote checks, page text. Pay per call in USDC via x402.

Finance & CryptoPayments & trading

Responded445 ms14 / 22
DiarioBitcoin

Spanish crypto, Bitcoin, AI and finance news since 2014. Free search and excerpts, paid full text.

Finance & CryptoPayments & trading

Responded445 ms14 / 22
DCA Method — backtests & calculators

Dollar-cost-averaging backtests on real historical data for crypto, stocks and commodities.

Finance & CryptoPayments & trading

Responded446 ms14 / 22
io.github.claracarspt/mcp

Used & imported cars in Portugal: search stock, ISV/IUC tax calc, resale value, contact.

Finance & CryptoCode & DevOps

Responded446 ms14 / 22
Deposit by Ouroboros Apps

Freelance deposit and payment schedule for AI assistants

Finance & CryptoPayments & trading

Outdated check446 ms14 / 22
walletmcppass: Apple Wallet passes

Create signed Apple Wallet passes (.pkpass): boarding passes, tickets, coupons, store cards.

Finance & CryptoPayments & trading

Outdated check448 ms14 / 22
io.github.Travisswop/swop

Sell to people and AI agents: create products, a storefront, and USDC payment links from chat.

Finance & CryptoPayments & trading

Outdated check448 ms14 / 22
QIE Wallet

Read-only QIE chain data: balances, tx status, tokens, network facts. Chains 1990 and 1983. No keys.

Finance & CryptoPayments & trading

Responded449 ms14 / 22
API Change Feed

What broke since your version, for 60 popular APIs/SDKs. Free quick check; full reports via x402.

Finance & CryptoPayments & trading

Responded449 ms14 / 22
Irish Tax Hub

Irish tax calculators, current rates and Revenue guidance: income tax, USC, PRSI, CGT, CAT and VAT.

Finance & CryptoPayments & trading

Responded450 ms14 / 22
Invoice by Ouroboros Apps

Freelance invoice line items, rates, due dates, and late terms for AI assistants

Finance & CryptoPayments & trading

Outdated check457 ms14 / 22

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