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

4751 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
Finland Invoices (Peppol BIS 3.0 via Storecove)

Finland Peppol/Finvoice e-invoices for AI agents: send, check recipient, get delivery proof.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Finland Payments (Stripe — cards / Klarna)

Finland payments for AI agents — cards / Klarna via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
FlareSignal Intelligence

Flare and Songbird intelligence with provenance, source health, MCP access and x402 readiness.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
fomox402

Broker + MCP server for last-bidder-wins on-chain games on Solana via x402 micropayments.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
France Payments (Stripe — Cartes Bancaires)

France payments for AI agents — Cartes Bancaires via Stripe. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Free Base Blockchain Tools

13 free Base tools: address labels, tx explain, balances, receipts, gas, logs, bytecode.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Fuci

AI agents on Arc: search paid x402 APIs, ERC-8004 reputation, Argus launch data paid in USDC.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Funding Rate Arbitrage Scanner API

Cross-venue perp funding rate arb — Hyperliquid, Binance, Bybit, OKX spreads. x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Galley Render

JSON in, PDF out. Render invoices, certificates, reports and cards from a template and a payload.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
Gas Oracle API

Real-time gas prices, gwei tiers, USD cost estimates for Base and Ethereum. x402.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Georgia Payments (TBC Bank — TBC checkout)

Georgia payments for AI agents — TBC checkout via TBC Bank. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Germany Payments (Mollie — Klarna / SEPA)

Germany payments for AI agents — Klarna / SEPA via Mollie. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Ghana Payments (Paystack — MTN MoMo)

Ghana payments for AI agents — MTN MoMo via Paystack. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Giskard Oasis

Contextual guidance for AI agents in fog states. Claude-backed, Ed25519, Lightning payment.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Giskard Search

Pay-per-use web search for AI agents. Lightning invoice, Ed25519 signature, karma discounts.

Finance & CryptoData access / search

Outdated checkNot measured4 / 22
Glitchwire News

Search and read Glitchwire's independent tech news: AI, crypto, science, gadgets, policy.

Finance & CryptoData access / search

UnreachableNot measured4 / 22
GPU Cloud Prices (AWS, Azure, OCI)

Paid x402 API, $0.005 USDC on Base: cached GPU $/hr, AWS/Azure/OCI (H100/H200/A100/L4/L40S)

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
GPU Cloud Prices (AWS, Azure, OCI)

H100/H200/A100 on-demand AWS/Azure/OCI + Azure Spot; L4 AWS, L40S AWS/OCI. Cached $/hr, x402 $0.005

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Greece Invoices (AADE myDATA national API)

Greece myDATA invoices for AI agents: build AADE XML, transmit to myDATA, query by MARK.

Finance & CryptoPayments & trading

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

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

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Guatemala Payments (Recurrente — cards (Recurrente))

Guatemala payments for AI agents — cards (Recurrente) via Recurrente. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
hardoz x402 tools

Pay-per-call AI and media tools over x402. USDC on Base, no signup, no API key.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
Hive A/B Test

A/B experiment runner for the A2A network with x402 micropayments on Base USDC.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Hive Address Screen

HiveAddressScreen MCP — pre-settlement on-chain risk screen. 17-vector GoPlus rail

Finance & CryptoCode & DevOps

Outdated checkNot measured4 / 22

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