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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41483 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
stierproducts tier lists

S-to-F tier lists for 208 product categories. Every placement cited, with barcodes.

OtherOther

Outdated check377 ms15 / 22
art.maddegen.agent/solsnap

Solana token/wallet rug-risk scoring. Free scan; $2 SOL unlocks full wallet report. No signup.

Finance & CryptoPayments & trading

Responded378 ms15 / 22
Sorted Travel

Travel ranking, place facts, weather, visa, and profile tools for Sorted Travel.

TravelData access / search

Responded378 ms15 / 22
YRUZ x402 tools

Pay-per-call x402 tools: package advisories, EU tenders, Wikidata facts, promo board, web, crypto

Finance & CryptoCode & DevOps

Responded378 ms15 / 22
Privi Quantum

Quantum on IonQ/IBM/Braket: spending mandates, signed benchmarks, paid PQC CBOM, advantage receipts.

Developer ToolsCode & DevOps

Outdated check379 ms15 / 22
Supplementscanner

Live supplement prices per kg, serving or capsule from stores across Europe. Free, no API key.

Developer ToolsCode & DevOps

Outdated check380 ms15 / 22
Privi Verify

Manufacturing lot verification and chain of custody for AI agents, paid per call in USDC (x402).

Finance & CryptoPayments & trading

Outdated check380 ms15 / 22
Privi Anchor

Hash anchoring and proof-of-existence on chain for AI agents and apps. Free with an API key.

Finance & CryptoCode & DevOps

Outdated check380 ms15 / 22
Proof Holdings

One API, all things verified — control, delegation, human approval, anti-impersonation.

Developer ToolsCode & DevOps

Outdated check380 ms15 / 22
ViaFrei

The German Real-Time Mobility Context Platform for AI: traffic, trains, charging, parking, weather.

Data & AnalyticsData access / search

Outdated check380 ms15 / 22
Scribiz

Transcripts, summaries, chapters and timestamped answers for video links, for AI agents.

MediaAI / LLM tooling

Outdated check380 ms15 / 22
California C-10 Contractor Check

Paid source-linked California electrical contractor license preflight.

Developer ToolsCode & DevOps

Outdated check384 ms15 / 22
Source Library

Search 15K rare pre-modern texts translated to English: philosophy, religion, science, literature.

Developer ToolsCode & DevOps

Outdated check384 ms15 / 22
fynsight: MCP server for DATEV

DATEV financial data for AI assistants: P&L, KPIs, bookings, budgets and monthly reporting.

Developer ToolsCode & DevOps

Responded385 ms15 / 22
Brontide agent arena

THE MECH ARENA BUILT FOR AI AGENTS. HUMANS WELCOME. Pilot mech duels over MCP, free, no sign-in.

Developer ToolsCode & DevOps

Responded385 ms15 / 22
Tolca

Know who you are paying before you pay: Québec contractor and company checks, plus web search. x402.

Developer ToolsData access / search

Responded387 ms15 / 22
Kennmarq.com

Rules and code for marking AI images, video and audio with C2PA and watermarks

MediaAI / LLM tooling

Outdated check387 ms15 / 22
Add to CRM

Find work contact details and add people and companies to your own CRM.

Marketing & SalesData access / search

Outdated check387 ms15 / 22
Clipform

Interactive video forms that capture authentic responses. Build engaging forms in minutes.

MediaCode & DevOps

Outdated check389 ms15 / 22
Próceres · escritos judiciales de España: papeleta, demanda y recursos

Redacta papeleta, demanda y recursos de España con los preceptos del BOE. Sin datos personales.

OtherOther

Outdated check389 ms15 / 22
Parlor.sh

Rooms where AI agents of any vendor talk to each other. A room is a URL. No sign-in.

Developer ToolsCode & DevOps

Responded391 ms15 / 22
Trengo MCP by usefulapi

Work tickets and messages, look up contacts and teams, pull reports, and reply, assign or close.

Developer ToolsData access / search

Responded392 ms15 / 22
Specularis AI Visibility Audit

Free AI visibility (GEO/AEO) audit: can ChatGPT, Claude and Perplexity find and cite your website?

Developer ToolsCode & DevOps

Outdated check392 ms15 / 22
Shop Your Color Season

Find clothes in your colour season (seasonal colour analysis) from shops in your country.

E-commerceData access / search

Responded393 ms15 / 22

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