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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1052 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
Building Permits & Code Violations Scraper — Owner Skip Trace

Live Socrata building permits & code violations with auto-chained LLC owner wireless phone lookup.

Developer ToolsBrowser & web scraping

Outdated check497 ms11 / 22
Outdated check524 ms11 / 22
Compliance Batch Alignment

Check whether a NAICS code aligns with a vertical: a routing-for-review signal, not a determination.

OtherOther

Outdated check629 ms11 / 22
Code Violations & Distressed Property Leads — Owner Phones

Scrape municipal code violations & distressed property liens with auto-chained LLC owner phones.

GovernmentBrowser & web scraping

Outdated check631 ms11 / 22
Outdated check1004 ms11 / 22
Code Synapse — Fit Repo Finder

Finds real, maintained open-source repos that fit your project. MCP grounding for coding agents.

Developer ToolsCode & DevOps

Outdated check64 ms10 / 22
DAITK (Dibblee AI Tool Kit) - Total Import Cost

Import duty into Canada only. By HS code and origin: tariff, surtax, quota, anti-dumping.

OtherOther

Outdated check67 ms10 / 22
Platform Changes

Live, sourced changes feed: Apple, Google Play, Android, GitHub, Vercel, Cloudflare, Firebase, more.

Developer ToolsCode & DevOps

Outdated check106 ms10 / 22
Html Vers Markdown

HTML to clean Markdown for LLM and RAG pipelines: headings, lists, tables, links, code fences. Pr...

Developer ToolsFile & docs

Outdated check137 ms10 / 22
MCP Heartbeat

Live health checks for public MCP servers: status, tools, latency, and uptime. Automated measurements, not a rating.

Developer ToolsMonitoring & observability

Outdated check315 ms10 / 22
WATR Software Oracle — estándar de arquitectura por rule_id

152 reglas con postura: enforce bloquea el PR, prefer se justifica. Clean Code, SOLID y agentes.

Developer ToolsCode & DevOps

Outdated check403 ms10 / 22
Agent Access Check

Check if a website will block your AI agent and find its llms.txt, MCP or OpenAPI door.

Developer ToolsCode & DevOps

Outdated check461 ms10 / 22
Census County Business Patterns

Establishment counts, employment, and payroll by geography and NAICS code from Census CBP

Finance & CryptoPayments & trading

Outdated check529 ms10 / 22
uml.singsk.com PlantUML

Render, validate, encode/decode PlantUML diagram-as-code; 22 diagram types. Free, no auth.

OtherOther

Outdated check571 ms10 / 22
AIGC Radar MCP

AI-vertical index: arXiv papers, curated GitHub AI projects, daily rankings. Zero-setup, read-only.

Developer ToolsCode & DevOps

Outdated check1202 ms10 / 22
Perceptdot

B2A2H platform — tracks GA4, Vercel deployments, GitHub workflows with AI-powered ROI analytics.

Developer ToolsCode & DevOps

Outdated check83 ms10 / 22
site.jiebang.www/tools

20 free dev tools: JSON/YAML, XML/SQL, Cron, SEO, QR code, URL shortener, cron tasks, files

Marketing & SalesDatabase

Outdated check152 ms10 / 22
APIShield WAF v4.0 MCP

50-vector prompt-injection, llms.txt poisoning, SSRF & OpenAPI scanner ($1 USDC).

Developer ToolsCode & DevOps

Outdated check1029 ms10 / 22
Countersign

Independent, signed check of AI work: math, quotes, sources, links, code. Public verifiable log.

OtherOther

Outdated check1137 ms10 / 22
var.gg Naming Memory

Curated multilingual dictionary that names code identifiers from domain concepts (KO/JA/ZH/VI/EN).

OtherKnowledge & memory

Outdated check1532 ms10 / 22
searchcode

Code intelligence for LLMs. Analyze, search, and retrieve code from any public git repository.

Developer ToolsCode & DevOps

Outdated check44 ms9 / 22
A2A Agent Card Cross-SDK Signature Conformance

Per-SDK verdict matrix for signed A2A Agent Cards: which signatures verify in each SDK.

Developer ToolsCode & DevOps

Outdated check333 ms9 / 22
CreativeScope — Mobile Game Ad Creative Intelligence

Mobile-game ad creative intelligence across SDK ad networks: search, rankings, AI hook analysis.

Developer ToolsData access / search

Requires authNot measured6 / 22Not checked yet
Everpod

Your own AI agent on an always-on cloud computer: Claude Code, Codex and more, or managed OpenClaw.

Developer ToolsAI / LLM tooling

Requires authNot measured6 / 22Not checked yet

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