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.

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41764 servers

Ordered by checks passed
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
Special Needs Care Network

Free matching with ABA, special needs school, and speech providers that take your insurance.

EducationKnowledge & memory

Responded409 ms15 / 22
Dietary Supplement Analysis (NIH data)

NIH supplement checks: upper limits, drug and herb interactions, FDA recalls, with citations.

Developer ToolsCode & DevOps

Responded411 ms15 / 22
io.github.hypeprinter007-stack/anchor-x402

x402-paid agent tools: 18 over HTTP, 14 over stdio. USDC per call, no API key.

Finance & CryptoPayments & trading

Responded412 ms15 / 22
A-Cube MCP by usefulapi

Read Italian invoices, receipts and SDI notices; validate, prepare and submit agreed drafts.

Finance & CryptoPayments & trading

Responded413 ms15 / 22
PromptGuard

Scan prompts for injection attacks, redact PII, and audit LLM SDK usage from any MCP client

Developer ToolsCode & DevOps

Responded414 ms15 / 22
io.github.conquext/neuron

AI-powered WhatsApp chatbot platform with 196 tools for bots, campaigns, and contacts.

Marketing & SalesCommunication & messaging

Responded414 ms15 / 22
HouseData

UK property data: EPC, flood risk, planning, sale prices, MEES 2030 checks and grants.

OtherOther

Responded414 ms15 / 22
io.github.physics-star-cat/databutler-facts

Official thresholds, rates and fees by key, with source, verified date and signature.

Developer ToolsCode & DevOps

Responded416 ms15 / 22
nanoodle

Your saved nanoodle workflow graphs as MCP tools — BYOK or pay per call in Nano (x402)

Developer ToolsCode & DevOps

Responded417 ms15 / 22
Small Business Intelligence by Brick & Mortar

Free joined public records for small business and CRE: Twin Cities parcels, sales, licences

GovernmentCode & DevOps

Responded417 ms15 / 22
Scigantic

Search public scientific datasets and read schema cards that describe their files, columns and rows

Data & AnalyticsData access / search

Responded418 ms15 / 22
Creative Cult

What players think of new video games, from their own reviews. No critic scores.

MediaAI / LLM tooling

Responded419 ms15 / 22
SQLGuard — permission before production writes

AI agents need permission before production SQL writes. Pilot $100 · Gateway $299. Lint≠authorize.

Developer ToolsDatabase

Responded420 ms15 / 22
Praetorium

Public Warhammer 40K rules, datasheets, points and missions; sign in to manage rosters and battles.

Developer ToolsCode & DevOps

Responded421 ms15 / 22
Scoutee

Tender search + AI CPV finder. Register free: 1 daily email alert, up to 20 results/search.

ProductivityCommunication & messaging

Responded421 ms15 / 22
io.github.webberdesign/webbersites-x402-data-api

45 pay-per-call AI agent tools: scraping, SEO, crypto data, lint, agent memory. x402 USDC on Base.

Finance & CryptoPayments & trading

Responded422 ms15 / 22
Aircall MCP by usefulapi

Read calls, contacts, users, teams and numbers; tag calls and create or update contacts.

Developer ToolsCode & DevOps

Responded423 ms15 / 22
Trooth

Read any company's record on the Trooth Network, each fact labeled with who said it and when.

Developer ToolsCode & DevOps

Responded425 ms15 / 22
skillcheck

Check an agent skill before you install it: which of your skills will it clash with?

Developer ToolsCode & DevOps

Responded427 ms15 / 22
Oceanir

Locate photos from visual clues and assess location claims with candidates and uncertainty.

MediaCode & DevOps

Responded429 ms15 / 22
io.github.Nutlope/inspo

Real production websites for coding agents: palettes, fonts, fold autopsies and reference JSX.

Developer ToolsCode & DevOps

Responded429 ms15 / 22
io.github.Kromatic-Innovation/fermi

Calibrated probability ranges for forecasting questions, with the assumptions behind them.

Developer ToolsCode & DevOps

Responded429 ms15 / 22
Patent by Ouroboros Apps

USPTO patent search and prior art lookup. Not legal advice

LegalData access / search

Responded430 ms15 / 22
Hands for Agents

Human-operated physical world in the EU: make, assemble, measure, verify, ship.

Developer ToolsCode & DevOps

Responded431 ms15 / 22

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