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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40680 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
Emendas parlamentares do Brasil

Brazilian federal budget amendments by municipality, author and recipient. Paid via Lightning.

GovernmentCode & DevOps

Responded108 ms15 / 22
CKB Pulse

Who builds on Nervos CKB, from public GitHub: projects, people, updates, DAO-funded work. Read-only.

Developer ToolsCode & DevOps

Responded108 ms15 / 22
LiveVariant

Build, inspect and read adaptive A/B tests. Config travels in the URL; no account or API key needed.

TravelCode & DevOps

Responded108 ms15 / 22
Lavenders (LAVNDR120)

Read-only facts on Lavenders (LAVNDR120): packages, prices, FAQ and the live consumer index card.

Developer ToolsCode & DevOps

Responded109 ms15 / 22
Naibul — agent-only board-game hall

Agent-only board-game hall: 12 verifiable games — chess, Go, backgammon, and 8-seat Werewolf.

OtherOther

Responded109 ms15 / 22
Sosumi

Search and read Apple developer documentation, HIG, and WWDC transcripts as Markdown.

OtherFile & docs

Responded109 ms15 / 22
CSS SOTA

What CSS you can actually ship today, from live Baseline data and MDN browser-compat-data.

Developer ToolsCode & DevOps

Responded110 ms15 / 22
Clarity by Health AI

Condition-aware ingredient and product checks for agents, with evidence tiers and citations.

OtherKnowledge & memory

Responded110 ms15 / 22
ShipStatic

Deploy static websites, landing pages, and prototypes instantly. Free, no account needed.

Developer ToolsCode & DevOps

Responded111 ms15 / 22
Web Validator by DigestSEO

Audit public webpages and supplied markup for HTML, CSS, SEO, JSON-LD, and link issues.

Developer ToolsCode & DevOps

Responded112 ms15 / 22
GenHTTP Lambda

Write, deploy and host small C# web services and sites at a public address.

OtherCode & DevOps

Responded112 ms15 / 22
Taiwan Market Open Data (Unofficial)

Unofficial. TWSE & TAIFEX open data for AI: stock, ETF & futures snapshots, quotes, 270+ datasets.

Finance & CryptoCode & DevOps

Responded113 ms15 / 22
Remocn: Remotion MCP server

Hosted MCP for Remotion videos: search Remocn components, read docs, plan a video, preview it.

MediaData access / search

Responded113 ms15 / 22
patternfetch

US stocks, ETFs, crypto → compact brief: patterns, S/R, regime + base rates vs baseline. Not advice.

Finance & CryptoCode & DevOps

Responded113 ms15 / 22
upGrowth Growth Toolkit

29 free read-only growth tools: CAC, ROAS, PPC, schema, meta tags, robots.txt and AI crawler checks.

OtherBrowser & web scraping

Responded113 ms15 / 22
coldHat

Put on anyone's AI rules by GitHub username: fetches their hat.md and its hat code.

Developer ToolsCode & DevOps

Responded114 ms15 / 22
Ply UI

List, search, and inspect Ply Angular + Tailwind copy-in components.

Developer ToolsCode & DevOps

Responded114 ms15 / 22
ccpcrate — Canadian CCPC corporate tax

Deterministic Canadian CCPC rate stack: small business deduction and grinds, Part IV, RDTOH.

Finance & CryptoPayments & trading

Responded114 ms15 / 22
Codex Reset

Read-only Codex usage-limit reset data: 24/48h reset forecast, dated reset record, service status.

Developer ToolsCode & DevOps

Responded115 ms15 / 22
CyberMax Data

Free US data lookups: ZIP demographics, CISA KEV/EPSS CVEs, domain rank, county spending, recalls.

Developer ToolsCode & DevOps

Responded115 ms15 / 22
Stackhal

Outside-in DNS, email security, SEO, GEO and app-link checks plus developer utilities.

Developer ToolsCommunication & messaging

Responded115 ms15 / 22
Japan Public Data (法人番号・登録支援機関・官公需入札)

Japan public data: corporate numbers, registered support organizations, government bid notices.

GovernmentCode & DevOps

Responded116 ms15 / 22
OpenNodes

Discover verified AI inference nodes, get the best node+model per task, pre-price chains.

Developer ToolsCode & DevOps

Responded116 ms15 / 22
MCP Registry Search: Find, Discover & Install MCP Servers & Tools | Directory, Catalog, Marketplace

MCP registry & directory: search, find & install 31k+ MCP servers & tools. Catalog and marketplace.

Developer ToolsData access / search

Responded116 ms15 / 22

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