MCP HeartbeatTHE MCP OBSERVATORY
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Evidence for your next connection.

Independent measurements of remote MCP servers. Every observation has a timestamp.

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DiscoveryServer directory

Remote MCP servers

Find a server for your workflow, with connection evidence you can inspect.

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18213 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
NuvUI

The docs, rules, blocks, charts and design tokens of nuvui, a React UI library, for coding agents.

Developer ToolsCode & DevOps

Responded248 ms14 / 22
io.github.AIDataNordic/food-recipe-mcp

Semantic search across 50,000+ food recipes with hybrid retrieval and reranking.

Developer ToolsCode & DevOps

Responded248 ms14 / 22
SSSNACK - Agent Takeover Arena

Owner-authorized puzzle: synthetic HTTP clues win sandboxed homepage art. No server access.

Developer ToolsCode & DevOps

Responded248 ms14 / 22
OffshoreProz Agent Company

A legal home for AI agents: Wyoming LLC US$299 + US$185/yr, or Nevis. Free diagnostic.

LegalCode & DevOps

Responded251 ms14 / 22
A2A Grocery — the agentic hub for retail grocery procurement

A2A + MCP hub for retail grocery procurement — 20 markets on the SCHEMA algo record. Trade only.

E-commerceCode & DevOps

Responded251 ms14 / 22
io.github.carbaj03/retry-trace

Inspect external HTTPS 429/503 retries with server-recorded attempts, Retry-After and arrival times.

Developer ToolsCode & DevOps

Responded251 ms14 / 22
io.github.pablo-albaladejo/kaiord

Convert, validate, and inspect workout files (FIT, TCX, ZWO, Garmin Connect) for AI agents.

Developer ToolsCode & DevOps

Responded252 ms14 / 22
1lev1

Track partnership work, log mission hours, and see what needs your approval on 1lev1.com.

Developer ToolsCode & DevOps

Responded253 ms14 / 22
Free100Leads

Check B2B contact coverage by country, industry, company size and US state.

Developer ToolsCode & DevOps

Responded254 ms14 / 22
MAGNT MCP Door

Meet Alexander Redkov for structured finance, corporate organization and joint human-AI research.

Developer ToolsCode & DevOps

Responded254 ms14 / 22
io.github.thechancerylaneproject/tclp-mcp

MCP server for The Chancery Lane Project's climate-aligned contract clause knowledge graph.

LegalCode & DevOps

Responded255 ms14 / 22
finance.marx/marx-finance

Autonomous AI agents research market events and publish aggregated forecasts.

Developer ToolsCode & DevOps

Responded255 ms14 / 22
Responded257 ms14 / 22
Simple Lab Tools Label Maker

Create printable cryogenic lab, sample, tube and QR label sheets. Six templates; free, no login.

Developer ToolsCode & DevOps

Responded258 ms14 / 22
IA-QA Eval & RAG — 38 tools

LLM & RAG evals: hallucination, eval contracts, semantic tests, tokens & model info. Free, no key.

LegalCode & DevOps

Responded258 ms14 / 22
Free100LocalLeads

Check local business contact coverage by country, category and US state.

Developer ToolsCode & DevOps

Responded258 ms14 / 22
Agent Trace Check

Read a tool-call log from an AI agent run and see which calls failed, looped or were slow.

Developer ToolsCode & DevOps

Responded262 ms14 / 22
Agent Verifier

Test and debug your AI agent's Web Bot Auth (RFC 9421) signature: is it valid, and what to fix?

Developer ToolsCode & DevOps

Responded262 ms14 / 22
Free100InfluencerLeads

Check influencer contact coverage by country, creator category and follower band.

Developer ToolsCode & DevOps

Responded264 ms14 / 22
kwnva.design portfolio

Catalog MCP for kwnva.design case studies, studio profile, and project inquiries.

Developer ToolsCode & DevOps

Responded266 ms14 / 22
RevoGrid DataGrid MCP Pro

Hosted Pro MCP server for RevoGrid DataGrid docs, examples, feature checks, and migration guidance.

Developer ToolsCode & DevOps

Responded266 ms14 / 22
KEVAREMESH Free Agent API Gateway

Free agent API shopping: verified x402 offers, licensed API routing, and instant source-only drafts.

E-commerceCode & DevOps

Responded267 ms14 / 22
DesarrolloMCP

Curso de MCP en español: busca lecciones y artículos; con tu cuenta, tu progreso y tus lecciones.

Developer ToolsCode & DevOps

Responded268 ms14 / 22
APIR Agent Verification

Check an AI agent you did not build: is it who it claims, inside its mandate, and what's its record

Developer ToolsCode & DevOps

Responded269 ms14 / 22

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