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

3367 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
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Outdated checkNot measured4 / 22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Outdated checkNot measured4 / 22
well-011-sharescan

Pre-share scan of text for your terms and secrets/PII. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-012-x402-probe

Unpaid x402 probe: status, latency, payment terms. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-015-municipal-notices

Public municipal notices with source links. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
well-016-datacleanup

CSV cleanup: dates, emails, phones, dedupe. x402 $0.005 USDC, Base. As is, no warranty.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Whale Alert API

Track large on-chain whale transactions on Ethereum and Base. x402 micropayment.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Wisely x402 Agent-Payment Infrastructure

Self-facilitated x402/MCP payments for hosted endpoints, rail proofs, receipts, and agents.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
Wodan Posture

Access-posture reports for agent data sourcing: robots, bot wall, licensing. Paid per call via x402.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
Word Counter API

Count words, characters, sentences, paragraphs, reading time. x402 micropayment.

Developer ToolsCode & DevOps

Outdated checkNot measured4 / 22
x402 Agent Tools

Pay-per-call web reader (Markdown/RAG chunks) and agent utilities; x402 USDC on Base.

Finance & CryptoPayments & trading

UnreachableNot measured4 / 22
x402 Discovery MCP

Discover x402 APIs by capability, price & trust. Powered by x402Scout.

Developer ToolsCode & DevOps

Outdated checkNot measured4 / 22
x402 Text Tools Catalog

Pay-per-call NLP & embeddings APIs on Base via x402. No keys/signup; agents pay per call in USDC.

Finance & CryptoAI / LLM tooling

Outdated checkNot measured4 / 22
x402 Text Tools Catalog

Pay-per-call NLP & embeddings APIs on Base via x402. No keys/signup; agents pay per call in USDC.

Finance & CryptoAI / LLM tooling

Outdated checkNot measured4 / 22
Zambia Payments (Flutterwave — mobile money)

Zambia payments for AI agents — mobile money via Flutterwave. Never holds funds.

Finance & CryptoPayments & trading

Outdated checkNot measured4 / 22
com.blacklabelbots.continuum/continuum

Agent continuity audits, referrals, sponsor packets, and Stripe Checkout for Continuum.

Finance & CryptoPayments & trading

Not measuredNot measured4 / 22
com.compliapi/screening

OFAC and global sanctions screening: crypto addresses, emails, websites, IDs, countries, VPN, geo

Finance & CryptoCommunication & messaging

Requires authNot measured4 / 22Not checked yet
com.datasignalslab/datasignals-lab-mcp

Hiring signals, SEC, Congress, FDA, crypto and app reviews: scored signals. 19 tools, free flagship.

Finance & CryptoPayments & trading

Requires authNot measured4 / 22Not checked yet
com.gocushy/mcp

The checkout your AI runs — bumps, upsells, subscriptions, tax and affiliates on your own Stripe.

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured4 / 22
com.griffnode/griffnode

Non-custodial crypto payments for AI assistants: balances, payments, and create payment links.

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured4 / 22
com.gtxagent/gtxagent-mcp

Seven paid x402 tools for crypto agents: safety, prices, X search, market hours, whales.

Finance & CryptoData access / search

Requires authNot measured4 / 22Not checked yet
com.meetkatalis/katalis

UK public-record company intelligence: Companies House, payments, contracts, registers, watch lists

Finance & CryptoPayments & trading

Requires authNot measured4 / 22Not checked yet
com.okdocai/okdoc

E-signature & document automation: create, send, track and sign documents with payments. 38 tools.

Finance & CryptoAutomation & workflows

Requires authOutdated checkNot measured4 / 22
com.onelasso/lasso

Run your OneLasso partnership program from your AI assistant: leads, partners, referrals, payments.

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured4 / 22

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