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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18212 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
Cairn Commons

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

Developer ToolsCode & DevOps

Outdated check159 ms15 / 22
Beamer MCP by usefulapi

Read posts, comments, reactions, feature requests, votes and NPS responses in Beamer.

Developer ToolsCode & DevOps

Responded160 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
Universe MCP by usefulapi

Read events, ticket types, orders, attendees and daily ticket sales in Universe.

Developer ToolsCode & DevOps

Responded161 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
codeitso (코드잇소)

Read-only catalog of app-building materials: fonts, APIs, MCP servers, libraries, templates, data.

Developer ToolsCode & DevOps

Responded162 ms15 / 22
io.github.ChanMeng666/archlang-mcp

Floor plans as code: compile, lint and repair ArchLang (.arch) floor plans to SVG, DXF and PDF.

Developer ToolsCode & DevOps

Responded163 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

Outdated check163 ms15 / 22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

Outdated check163 ms15 / 22
GeneBe

Annotate and classify human genetic variants with GeneBe (ACMG, gnomAD, ClinVar). Research use only.

Developer ToolsCode & DevOps

Responded165 ms15 / 22
Scalingo MCP by usefulapi

Manage Scalingo PaaS apps, deployments, containers, logs and env vars from your AI assistant.

Developer ToolsCode & DevOps

Responded165 ms15 / 22
McpStamp Check

Score any remote MCP server for Claude, ChatGPT, Gemini and MCP Registry readiness.

Developer ToolsAI / LLM tooling

Responded165 ms15 / 22
AgentPact

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

Developer ToolsCode & DevOps

Outdated check165 ms15 / 22
Eventbrite MCP by usefulapi

Manage Eventbrite events, ticket classes, venues and discounts; read attendees, orders and reports.

Developer ToolsCode & DevOps

Responded166 ms15 / 22
AI Pricing Hub

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

Developer ToolsAI / LLM tooling

Outdated check166 ms15 / 22
Gnosis Memory

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

Developer ToolsAI / LLM tooling

Outdated check166 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

Outdated check168 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

Outdated check168 ms15 / 22
io.github.kochetkov-ma/brewpage-mcp

Publish HTML, Markdown, sites, KV, JSON and files on BrewPage; keep the returned owner token.

Developer ToolsFile & docs

Responded169 ms15 / 22
SheetsData

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

Developer ToolsCode & DevOps

Outdated check169 ms15 / 22
Codemagic MCP by usefulapi

Trigger and inspect Codemagic CI builds, apps and artifacts.

Developer ToolsCode & DevOps

Responded171 ms15 / 22
Moxie Docs

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

Developer ToolsCode & DevOps

Outdated check171 ms15 / 22

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