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

17922 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
Pubroot

Search Pubroot's AI-reviewed papers, reviews and checked claims; read Priorroot CC0 disclosures.

Developer ToolsCode & DevOps

Responded54 ms15 / 22
Scroll the Gurbani

Gurbani a few lines a day in Gurmukhi with English, any Ang or shabad, and whole banis.

Developer ToolsCode & DevOps

Responded55 ms15 / 22
Wardrobe Connect

Find clothes that match a description or a picture on eBay, new and pre-owned.

Developer ToolsCode & DevOps

Responded57 ms15 / 22
sigelo

One identity an AI agent owns: proves who it is offline, keeps its reputation, pays, messages agents

Developer ToolsCode & DevOps

Responded58 ms15 / 22
Finch Agent Catalog

Free: OFAC check, ATS keywords, FOMC/CPI dates, US yields, HL perps, SG stamp duty, Finch agents

Developer ToolsCode & DevOps

Responded58 ms15 / 22
DiffCI

Fail-closed, change-aware verification for AI coding agents with affected-test guidance.

Developer ToolsCode & DevOps

Responded60 ms15 / 22
PaperLesson — K-12 Vector Math Drills & Handwriting Worksheet Generator

Generate seeded K-12 math drills with answer keys, handwriting ruling specs & vector PDFs.

Developer ToolsCode & DevOps

Responded61 ms15 / 22
HORIZON SHIELD: construction and renovation estimate auditor

Fair-price checks for Japanese renovation quotes, with sources and recomputable records.

Developer ToolsCode & DevOps

Responded62 ms15 / 22
Modern AI Brand Recommendation Rate

How often AI search picks a brand first. Recommendation Rate data from Modern Discovery.

Developer ToolsCode & DevOps

Responded62 ms15 / 22
Company Facts

Company data from official sources: new US businesses, registers, tech stack, open jobs, SEC.

Developer ToolsCode & DevOps

Responded62 ms15 / 22
Switchboard Finance

Australian business loans: ATO debt, caveat, equipment, property. Check fit, then a broker calls.

Developer ToolsCode & DevOps

Responded63 ms15 / 22
TapeAPI: signed BNB Chain reads

Signed BNB Chain reads (balances, tokens, NFTs, prices, TapeOut names) with verifiable receipts

Developer ToolsCode & DevOps

Responded63 ms15 / 22
getauditor: the Auditor door

The auditor of an issuer and every change on the record, dated: signed and receipted (RCO-10060).

Developer ToolsCode & DevOps

Responded64 ms15 / 22
Silex Gambling Help

Help to stop gambling: verified helplines, self-exclusion, a gambling-site check, PGSI, block plans.

Developer ToolsCode & DevOps

Responded65 ms15 / 22
Fair Fare

What a taxi, Uber or Lyft should cost, airport pickup rules, and overcharge checks.

TravelCode & DevOps

Responded65 ms15 / 22
smry Public Reader

Read and search exact public source URLs with stable paragraph citations.

Developer ToolsCode & DevOps

Responded65 ms15 / 22
HORIZON SHIELD YAKUMO (verified contractor directory)

Neutral, verification-gated MCP directory of Japan construction contractors (KIRA-audited).

Developer ToolsCode & DevOps

Responded66 ms15 / 22
x402 Checker (AI Nock)

Free check/board/name; paid bid/report 0.05, 1c fx/wx/lookups, news 0.001.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Guard Brasil

Detecta e mascara dado pessoal brasileiro (CPF, CNPJ, RG, e-mail) antes do texto ir a uma IA. LGPD.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
pkgxray

Pre-install security scans for npm packages, MCP servers, and AI agents with cited verdict evidence.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Hatch

Hosting for AI agents: publish a live website in one tool call, ephemeral or forever.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
CheckChinaTransit — China 24/240-Hour Visa-Free Transit Compliance Engine

Verify China 240-hour (formerly 144h) visa-free transit eligibility, ports & third-country routes.

Developer ToolsCode & DevOps

Responded66 ms15 / 22
Tabularium

Agent memory and a signed spending ledger: pay any x402 API, keep a provable receipt.

Finance & CryptoCode & DevOps

Responded67 ms15 / 22
Qiniso

Deterministic fact verification for AI agents — checksums & curated data, not guesses.

Developer ToolsCode & DevOps

Responded67 ms15 / 22

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