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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41794 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
Spin Wheel Names

Spin a random picker wheel, pick a random number, and search shared wheels from spinwheelnames.com.

Developer ToolsCode & DevOps

Responded394 ms15 / 22
Privi Quantum Ledger

Quantum-sealed audit logs for AI agents (ML-DSA-87, SHA3-512), plus Privi Guard and trust passports.

Finance & CryptoCode & DevOps

Responded394 ms15 / 22
Sounding

Sounding checks proposed decisions and returns structured proceed, revise, or pause assessments.

Developer ToolsCode & DevOps

Responded394 ms15 / 22
Verse by A-to-Mind

Ask Verse anything with sources, plus code review, translation and more paid per call over x402.

Developer ToolsCode & DevOps

Responded395 ms15 / 22
SrcLog

Search GitHub repos, find alternatives, browse topics and rank top developers and orgs. No auth.

Developer ToolsCode & DevOps

Responded395 ms15 / 22
io.github.Nadeus/toolradar

Search, compare and price software tools. Verified prices with their date, real alternatives.

Developer ToolsCode & DevOps

Responded395 ms15 / 22
Seerxo

Generate SEO-optimized Etsy listings — title, description, and 13 tags — from your AI assistant.

Developer ToolsCode & DevOps

Responded396 ms15 / 22
io.github.tell-and-go/mcp

Search, quote and book hotels and resorts from any AI agent. Checkout on tellandgo.com. No API key.

TravelPayments & trading

Responded396 ms15 / 22
AgentsCPA

Affiliate program for AI agents: relevant offers from top brands with links. Earn per purchase.

Marketing & SalesData access / search

Responded397 ms15 / 22
McpStamp Price Tracker

Read a shop page's current price, watch items with a target price and see each item's history.

Developer ToolsCode & DevOps

Responded397 ms15 / 22
io.github.gustavoatar/instafan

Plan trips with friends: mood search, live briefs, top spots with photos, day-by-day itineraries.

MediaCode & DevOps

Responded398 ms15 / 22
FreeTTS

Text to speech in 149 languages: MP3 links from any assistant. Free without an account.

MediaAI / LLM tooling

Responded398 ms15 / 22
PDF Text Extractor for AI Agents

x402 PDF text, pages, and metadata for AI/RAG. $0.0015 per successful PDF.

Developer ToolsCode & DevOps

Responded402 ms15 / 22
Add to CRM

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

Marketing & SalesData access / search

Responded402 ms15 / 22
Tellscreen

Read screen recording links: summaries, transcripts, suggested changes and frame images.

MediaCode & DevOps

Responded402 ms15 / 22
Lacuna Music

Generate AI music via the Lacuna Music API from MCP clients like Claude Desktop & Code.

MediaCode & DevOps

Responded405 ms15 / 22
freeq

Read and verify freeq conversations: channels, history, search, signatures, pins.

Developer ToolsCode & DevOps

Responded405 ms15 / 22
Web Metadata, Open Graph & JSON-LD Extractor

Open Graph, JSON-LD, canonical, robots, headings and page metadata extractor via direct x402 MCP.

Developer ToolsCode & DevOps

Responded407 ms15 / 22
Sunrise & Sunset Times

Sunrise, sunset, twilight, golden hour and moon times for any place on Earth. Free, no API key.

OtherOther

Responded407 ms15 / 22
DaedalMap Geographic Data and Tools

Connect geographic IDs, places, shapes, and published data through DaedalMap tools.

OtherOther

Responded408 ms15 / 22
United AI Network

Inspect public research tasks. Published by UAIN’s AI-operated campaign; joining needs permission.

Marketing & SalesData access / search

Responded408 ms15 / 22
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

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