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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18175 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
Feedpeck: RSS Feed Finder & Reader by Website

Feedpeck: find any site's RSS/Atom/JSON feeds + latest posts. Free, no key.

Developer ToolsCode & DevOps

Responded148 ms15 / 22
QuickUnits

Exact unit conversion with the factor and a citable page URL. Answers in your language.

Developer ToolsCode & DevOps

Responded150 ms15 / 22
PadelTrue padel racket data

Published padel racket specifications, each with its source, and calculated ratings. Read only.

Developer ToolsCode & DevOps

Responded153 ms15 / 22
Cairn Commons (read-only)

Read-only: look up checked dependency bugs and check versions before installing. No account.

Developer ToolsData access / search

Responded153 ms15 / 22
Swarmnest

Search AI agent tools, MCP servers and Skills. Verified agents post Field Reports and on The Hive.

Developer ToolsData access / search

Responded153 ms15 / 22
Blumen Komander München

First German florist with a public MCP server. Search bouquets and order flowers via AI in Munich.

Developer ToolsCode & DevOps

Responded155 ms15 / 22
SiteKrs

List SiteKrs templates and get editor links; import your own source on the SiteKrs homepage.

Developer ToolsCode & DevOps

Responded155 ms15 / 22
ai.foura/mcp

Reliable web access for AI agents: smart HTTP, rotating proxies, and full-browser rendering.

Developer ToolsCode & DevOps

Outdated check155 ms15 / 22
France Care, accès aux soins et prévention

Accès aux soins en France, qui saisir pour une démarche de santé, prévention en entreprise.

Developer ToolsCode & DevOps

Responded157 ms15 / 22
PaintColorMatcher — Scientific Paint Color & HEX CIEDE2000 Matcher

Match HEX codes & find cross-brand paint equivalents across Sherwin-Williams, Benjamin Moore & Behr.

Developer ToolsCode & DevOps

Responded157 ms15 / 22
Cairn Commons

Checked dependency-bug records: look an error up, check versions before installing.

Developer ToolsCode & DevOps

Responded159 ms15 / 22
voicehook

Talk with your agents. A voice call in the browser that your agent can start or join.

Developer ToolsCode & DevOps

Responded160 ms15 / 22
Zetesis Scientific Due Diligence

Due diligence on life-science claims: omics, trials, gene therapy. Dimension by dimension.

Developer ToolsCode & DevOps

Responded161 ms15 / 22
Retirement Contribution Limits 2027

401(k), IRA, HSA limits, age 60-63 catch-up, Roth catch-up rule, Social Security COLA, 2025-2027.

Developer ToolsCode & DevOps

Responded163 ms15 / 22
Business Frameworks

Operating judgement for businesses under $50M revenue. Free top layer; nodes and bundles over x402.

Developer ToolsCode & DevOps

Responded163 ms15 / 22
DropTheHassle

Your AI publishes your site: free HTTPS link, or a .com for €19 that goes live with no DNS.

Developer ToolsCode & DevOps

Responded163 ms15 / 22
AgentPact

Agent-to-agent marketplace: discover offers, answer needs, negotiate deals, settle in USDC escrow.

Developer ToolsCode & DevOps

Responded165 ms15 / 22
AI Pricing Hub

Source-backed AI model pricing, rankings, history, and benchmark data.

Developer ToolsAI / LLM tooling

Responded166 ms15 / 22
Gnosis Memory

Persistent memory and vector search for AI agents. Hosted, OAuth-protected via Google sign-in.

Developer ToolsAI / LLM tooling

Responded166 ms15 / 22
Recipe Nutrition Calculator

Recipe nutrition from ingredient lines: USDA FoodData Central values, per serving, FDA rounding.

Developer ToolsCode & DevOps

Responded167 ms15 / 22
PHP, Symfony & Laravel playground

Create shareable links to run Symfony, Laravel or plain PHP code in the browser, no install.

Developer ToolsCode & DevOps

Responded168 ms15 / 22
Qimena Qi Men Dun Jia & BaZi

Qi Men Dun Jia charts, BaZi Four Pillars, best-time ranking and solar terms. Free, no key.

Developer ToolsCode & DevOps

Responded168 ms15 / 22
SheetsData

Electronic component datasheets for AI agents: pinouts, specs, package info and design checks.

Developer ToolsCode & DevOps

Responded169 ms15 / 22
Moxie Docs

Living docs and MCP context for GitHub repos — conventions, gaps, and source-cited pages on merge.

Developer ToolsCode & DevOps

Responded171 ms15 / 22

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