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

4136 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
io.github.nach-dakwale/instadomain

Domain registration for AI agents via Stripe or x402 crypto with Cloudflare DNS.

Finance & CryptoPayments & trading

Responded864 ms10 / 22
io.github.huwhitememes/tollbooth

37 paid x402 MCP tools for OSINT, prediction markets, web intel, and agent security on Base USDC.

Finance & CryptoPayments & trading

Responded2252 ms10 / 22
xyz.mortal01/utility

Pay-per-call web tools for agents (extract, summarize, ask, JSON) via x402 USDC on Base.

Finance & CryptoPayments & trading

Responded58 ms10 / 22
GadgetHumans API Hub

236 MCP tools free (rate-limited): token safety, OCR, DNS, 228 x402 routes. No key.

Finance & CryptoPayments & trading

Responded81 ms10 / 22
io.tooloracle/quantum

QuantumOracle — 18 post-quantum crypto tools: Kyber, Dilithium, hybrid schemes, migration.

Finance & CryptoPayments & trading

Responded88 ms10 / 22
io.tooloracle/xrploracle

XRPLOracle - 31 XRP Ledger tools: payments, DEX, AMM, hooks, NFTs, validators, DIDs.

Finance & CryptoPayments & trading

Responded90 ms10 / 22
com.dropwatchhq/compliance-radar

US small-biz & foreign-LLC filing deadlines: FinCEN BOI, IRS 5472, franchise tax, 1099 (sourced).

Finance & CryptoPayments & trading

Responded92 ms10 / 22
io.tooloracle/mica

MiCAOracle — 24 tools for EU MiCA stablecoin compliance: peg, reserves, attestations.

Finance & CryptoPayments & trading

Responded102 ms10 / 22
io.sslip.249.111.77.187/x402-mcp-tools

Pay-per-call MCP tools via x402 (USDC on Base): QR codes, images, text analysis, web fetch.

Finance & CryptoPayments & trading

Responded106 ms10 / 22
io.tooloracle/tonoracle

TONOracle - 11 TON tools: jettons, Telegram payments, validators, smart contracts.

Finance & CryptoPayments & trading

Responded124 ms10 / 22
io.tooloracle/predictionguard

Polymarket integrity MCP — 28 tools for wallet risk, whales, UMA scans, SAR/STR reports.

Finance & CryptoPayments & trading

Responded144 ms10 / 22
AgentLot Marketplace

AI marketplace for agents to find paid work and trade digital services via MCP and x402.

Finance & CryptoPayments & trading

Responded151 ms10 / 22
Agent Domain Search

Agent-first domain registration and DNS management, paid with USDC via x402.

Finance & CryptoPayments & trading

Responded307 ms10 / 22
AgentGrade

Scan any website for AI agent readiness, payment protocols, and discovery endpoints

Finance & CryptoPayments & trading

Responded312 ms10 / 22
com.textforagents/paid-call-checkout-conformance-probe

Pays your endpoint like a stranger would and signs a checkout conformance verdict.

Finance & CryptoPayments & trading

Responded334 ms10 / 22
Duty & Rest for agents

Cross-session fatigue ledger for agents: FIT/CAUTION/GROUNDED dispatch gating.

Finance & CryptoPayments & trading

Responded336 ms10 / 22
Dark pool for agent work

Sealed order book for non-security agent work: orders rest non-displayed and disclose only as fills.

Developer ToolsPayments & trading

Responded340 ms10 / 22
CreditLabs

Credit payment and amortization calculations, editorial sources and simulator discovery.

Finance & CryptoPayments & trading

Responded364 ms10 / 22
Wheeler Hubbell Publishing Standing Mark

Signed, object-bound claim examinations. 1.00 USDC on Base via x402. Free verification.

Finance & CryptoPayments & trading

Responded405 ms10 / 22
Home-Services Agent Network

Home-services agent network: registry of local pros, standard job-request form, receipts ledger.

Finance & CryptoPayments & trading

Responded440 ms10 / 22
Forecast Calibration Ledger: agent self-forecasts, resolved and scored

Signed agent self-forecasts, resolved and scored per cohort, with a self-killing trust weight.

Finance & CryptoPayments & trading

Responded447 ms10 / 22
xportalx

AI agent gateway with web fetching, data extraction, crypto pricing, and x402 payments

Finance & CryptoPayments & trading

Responded452 ms10 / 22
InsureLink

AI agent-to-agent SLA agreements on Base with insurance, reputation, and x402 payments.

Finance & CryptoPayments & trading

Responded741 ms10 / 22
NexusSDR AI — 4-Agent B2B Buying-Intent & Outbound MCP Server

Generate B2B buying-intent dossiers, ICP signals & multi-touch outbound sequences via MCP & x402.

Finance & CryptoPayments & trading

Responded1096 ms10 / 22

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