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

3324 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
Mako Metrics

Competitor Meta ads intelligence reports. List plans, create orders, Stripe checkout for humans.

Marketing & SalesPayments & trading

Outdated check455 ms14 / 22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Outdated check457 ms14 / 22
Glide — wallets and US banking

Instant Base + Solana wallets, free and x402-payable. US bank account after a 2-min check.

Finance & CryptoPayments & trading

Responded459 ms14 / 22
Duck Tax

Check micro-entity company accounts: raw figures in, validated balance sheet and deadlines out.

Finance & CryptoPayments & trading

Responded461 ms14 / 22
KlearFlow Relay

Machine-paid revenue intelligence, recovery decisions, and x402 routing for AI agents.

Developer ToolsCode & DevOps

Outdated check461 ms14 / 22
AurelianFlo

OFAC wallet screening, EDD memos, exposure forecasts, review queues and watchlists. Free to try.

Finance & CryptoPayments & trading

Responded462 ms14 / 22
Doviandi Cyprus corporate and tax

Reviewed Cyprus corporate and tax facts, statutory tests, and company register search.

Finance & CryptoData access / search

Responded464 ms14 / 22
PayRam

Install, configure, operate and integrate self-hosted PayRam crypto payment gateways.

Finance & CryptoPayments & trading

Outdated check465 ms14 / 22
Israel Business Intelligence MCP

Israeli invoice PAY/HOLD/BLOCK gate; cheapest paid path company-changes $0.01 USDC.

Data & AnalyticsPayments & trading

Outdated check469 ms14 / 22
Carry Console — MCP App

Read-only visual Hyperliquid carry scan via MCP Apps and x402 v2 Solana USDC.

Finance & CryptoPayments & trading

Responded472 ms14 / 22
Jock Taxes for ChatGPT

Pro athlete after-tax salary calculators for MLB, NBA, NFL and NHL, built for ChatGPT.

Finance & CryptoAI / LLM tooling

Responded482 ms14 / 22
BIG Machine Market

AI-native $0.001 interpretation and state-deviation checks over x402.

Developer ToolsCode & DevOps

Outdated check483 ms14 / 22
io.github.FieldmodeLLC/scrapecheck

Verify before your agent acts on data it paid for. Signed verdicts, checkable offline, via x402.

Developer ToolsCode & DevOps

Outdated check485 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

Responded486 ms14 / 22
Solana Cleanup

Read-only Solana and crypto reserve-recovery scans, pricing, chain facts, and methodology.

Finance & CryptoPayments & trading

Responded488 ms14 / 22
Cryptowisser News

Latest crypto news, stories and articles from Cryptowisser, with news cards linking to full stories.

Finance & CryptoPayments & trading

Responded492 ms14 / 22
Freedom Engine M2M Gateway & Task Clearinghouse

Zero-reg HTTP 402 M2M Gateway, 15 AI Tools, 120B LLM & Escrow Clearinghouse (L402/x402).

Developer ToolsCode & DevOps

Outdated check499 ms14 / 22
Flow — Base quotes & contract safety for agents

Best-execution quotes and contract safety checks on Base for AI agents, paid per call via x402.

LegalCode & DevOps

Outdated check505 ms14 / 22
Ironflow: Hyperliquid data

Hyperliquid data and liquidation alerts for AI agents: fills, candles, funding, wallet analytics.

Finance & CryptoPayments & trading

Outdated check509 ms14 / 22
Penniless Data Utilities

Ten x402-paid tools for JSON, YAML, cron, diff, text, DNS, WHOIS, GitHub, crypto, and email.

Finance & CryptoCommunication & messaging

Outdated check513 ms14 / 22
codes.find/verified-codes

Verified discount & referral codes for crypto exchanges, cards and more — tested first-hand.

Finance & CryptoPayments & trading

Responded515 ms14 / 22
NodeProxy Web Surface Markdown Parser

x402 MCP web parser: URLs to Markdown for agents. USDC on Base, Polygon, Arbitrum, Ethereum.

Finance & CryptoPayments & trading

Outdated check519 ms14 / 22
AUN — Agent Upgrade Network

Audit AI agents' tool calls, planning and memory; Base on-chain data; pay per call via x402.

Finance & CryptoKnowledge & memory

Responded524 ms14 / 22
Portfolio Terminal

Dated ETF, stock and calendar data, plus tax-loss, withholding and fee math on your holdings.

Finance & CryptoPayments & trading

Responded525 ms14 / 22

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