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

4073 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
Æfact — Korean fact desk for AI agents

Verified Korean facts: law changes by date, Bank of Korea figures, fact-check requests.

Finance & CryptoPayments & trading

Responded539 ms14 / 22
GimmeTheSauce

Find public sources on how app and SaaS founders launch, price and grow their products.

Finance & CryptoPayments & trading

Outdated check539 ms14 / 22
BotsRated (beta)

Signed checks of x402 sellers on Base and remote MCP servers, before your agent pays.

Finance & CryptoPayments & trading

Outdated check540 ms14 / 22
AgentDiet Universal A2A & MCP Tool Discovery, Safe-Proxy & Swarm Router

Single-connection meta-router indexing 500+ MCP servers & A2A tools with 85% token compression an.

Finance & CryptoPayments & trading

Outdated check544 ms14 / 22
Imperium Live Multi-Specialist A2A Swarm Mesh Coordinator

Coordinate multi-specialist A2A agent swarms with cryptographic handshakes and x402 settlement.

Finance & CryptoPayments & trading

Outdated check547 ms14 / 22
AgentDiet Base & Solana DEX Whale Orderflow & Accumulation Scanner

Tracks real-time 1h/24h DEX buy/sell orderflow ratios, whale accumulation signals, and liquidity.

Finance & CryptoPayments & trading

Outdated check549 ms14 / 22
AgentDiet DeFi Stablecoin & Liquidity Pool Yield Arbitrage Scanner

Scans live DeFiLlama APYs, TVL depth, and risk-adjusted yield spreads across Base, Arbitrum, Sola.

Finance & CryptoPayments & trading

Outdated check551 ms14 / 22
HomeShared

Find an Airbnb listing cheaper elsewhere, search vacation rentals, quote, and hand off to checkout.

TravelPayments & trading

Responded553 ms14 / 22
io.github.onrampbtc/proof-of-custody

Bitcoin custody scores, failure registry, ETF custody, stablecoin and x402 data, source router.

Finance & CryptoPayments & trading

Responded554 ms14 / 22
XRPL-Utilities

XRPL data tools for AI agents: wallet classifier, signals, RWA tracker, ETF flows. Pay via x402.

Finance & CryptoPayments & trading

Responded561 ms14 / 22
RQM Studio Jobs

Delegate 20 fail-closed RQM Studio quantum work products with fixed-request x402.

Finance & CryptoPayments & trading

Outdated check561 ms14 / 22
Grideōs Facts

Read-only facts about Grideōs from its signed, hash-chained ledger. Verify before you cite.

Finance & CryptoPayments & trading

Responded563 ms14 / 22
TeamPredict HR Calculators

HR, payroll and date calculators: turnover, eNPS, US take-home pay, bonus tax, overtime. No key.

Finance & CryptoPayments & trading

Responded564 ms14 / 22
SavePropTax

Free check of a California home for a Proposition 8 property tax reduction, plus owner filing.

Finance & CryptoPayments & trading

Outdated check565 ms14 / 22
Neuron Sports Ad Exchange

Autonomous AI sports ad exchange with quote-bound Stripe settlement and live delivery telemetry.

Finance & CryptoPayments & trading

Responded567 ms14 / 22
Signo

AI agents that watch DeFi positions: read a wallet report, draft agents for the owner to sign.

Finance & CryptoPayments & trading

Outdated check567 ms14 / 22
SignalHarness.ai

330 production AI-agent services for data, validation, AI, crypto, and x402 pay-per-use.

Finance & CryptoPayments & trading

Responded568 ms14 / 22
Leal

Design and launch Apple Wallet and Google Wallet loyalty stamp cards for your shop, café or salon.

Finance & CryptoPayments & trading

Responded569 ms14 / 22
Piku

Find creators and read their Rate Cards. Creators draft quotes and invoices on their Piku account.

Finance & CryptoPayments & trading

Outdated check569 ms14 / 22
Paddock

Pre-payment verification for AI agents.

Finance & CryptoPayments & trading

Outdated check574 ms14 / 22
PlainText Wallet Approval Checker

Explains wallet approvals and signature requests in plain language: SAFE, CAUTION or RISK.

Finance & CryptoPayments & trading

Outdated check577 ms14 / 22
MINT Protocol — Universal Work Attestation

Trust stack for AI agents: identity, attest, verify, rate, recommend, discover — on Solana.

Finance & CryptoPayments & trading

Outdated check578 ms14 / 22
Imperium Pre-Flight Readiness Auditor — A2A, MCP & x402 Validator

Audit any domain or agent for A2A, MCP, x402, MPP, ERC-8004, and Poppy readiness.

TravelPayments & trading

Outdated check585 ms14 / 22
Income Factory Toll Fabric

Eight metered machine-intelligence tools for AI agents with native x402 payment paths.

Finance & CryptoPayments & trading

Outdated check586 ms14 / 22

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