MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

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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

4147 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
United Arab Emirates Payments (Tap Payments — Apple Pay / cards)

United Arab Emirates payments for AI agents — Apple Pay / cards via Tap Payments. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
United Kingdom Payments (Stripe — Stripe checkout)

United Kingdom payments for AI agents — Stripe checkout via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
United States Payments (Stripe — Stripe checkout)

United States payments for AI agents — Stripe checkout via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Uprampr Marketplace

Buy and sell with Bitcoin, Monero or Pirate Chain. Listings, Want Ads, offers, escrow.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Uruguay Invoices (DGI e-Factura CFE, merchant-signed SOAP relay)

Uruguay DGI e-Factura (CFE): AI agents submit signed sobres to DGI e-invoicing, stateless forwarder.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Uruguay Payments (Mercado Pago — Mercado Pago wallet)

Uruguay payments for AI agents — Mercado Pago wallet via Mercado Pago. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
USA Logistics (buy USPS/UPS/FedEx labels + tracking via EasyPost)

US shipping labels for AI agents: buy USPS/UPS/FedEx, track and refund via EasyPost.

Developer ToolsPayments & trading

Outdated checkNot measured4 / 22
USDC & RPC Reference (free)

Free read-only data: verified USDC addresses and EIP-712 domains, measured RPC eth_getLogs limits.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
Value Ledger 研值

Monthly revenue, MoM/YoY growth and industry rankings for Taiwan-listed companies (TWSE/TPEx).

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
VerifyRef

AI agent recruiting: talent pool match, reference checks, credit packs via Stripe MPP

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Vietnam Invoices (MISA meInvoice create, publish & query)

Vietnam MISA meInvoice: AI agents create, publish and query e-invoices, stateless BYO.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Vietnam Payments (MoMo — wallet QR / ATM / cards)

Vietnam payments for AI agents — MoMo wallet QR, ATM, cards. Zero-setup sandbox. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Wallet Portfolio Tracker API

Crypto wallet balances, ERC-20 tokens, USD values across Base and Ethereum. x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Well

Connect your AI to your Well financial data - invoices, companies, contacts.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-001-extract-table

Extract tables from a PDF. x402 $0.01 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-002-url-to-markdown

Public https page to markdown. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-003-json-to-markdown

https JSON URL to tidy markdown. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-004-html-to-markdown

HTML string or https URL to markdown. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-005-csv-to-table

https CSV to headers and rows. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-006-url-metadata

Page title, description and Open Graph tags. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-007-rss-to-markdown

RSS/Atom feed to markdown items. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-008-text-stats

https text to counts and sha256. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-009-url-change-watch

Has this https URL changed? (sha256/etag). x402 $0.01 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-010-docx-to-text

Word .docx to text and tables. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22

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