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
Outdated check99 ms12 / 22
SkillAgent

Search and fetch AI agent skills, rules files and MCP servers indexed from GitHub.

Developer ToolsCode & DevOps

Outdated check100 ms12 / 22
mcp-everything: Russian APIs

Russian APIs for AI agents: YooKassa, CDEK, Bitrix24 and more. Ready scenarios with code. No key.

Developer ToolsCode & DevOps

Outdated check126 ms12 / 22
Flowie Developer Docs

Search and read the Flowie Exchange API docs and OpenAPI contract. No sign-in needed.

LegalCode & DevOps

Outdated check127 ms12 / 22
ArcadeOps Public Discovery

Read-only ArcadeOps discovery for developer docs, OAuth, OpenAPI and synthetic sandbox.

Developer ToolsCode & DevOps

Outdated check141 ms12 / 22
com.kenoodl/verify

Runs your code against a contract; HELD or BROKE at the exact input. Deterministic. 0.10 USDC/call.

LegalPayments & trading

Outdated check143 ms12 / 22
Pine Script v6 Documentation

Pine Script v6 documentation lookup, function validation, and linting for AI code generation

Developer ToolsFile & docs

Outdated check154 ms12 / 22
net.bigfloppy.vibescan/vibescan

Free security scan for AI-written GitHub repos: leaked keys, .env, eval, SQLi, CORS.

Developer ToolsCode & DevOps

Outdated check155 ms12 / 22
MCPFax Vehicle Diagnostics

A fault code, a VIN, or a recall — answered from public NHTSA and standards data.

OtherOther

Outdated check168 ms12 / 22
Drupal Code Query

Drupal core API changes, contrib usage, upgrade checks, patches, code search, SQL, WordPal themes.

Developer ToolsData access / search

Outdated check185 ms12 / 22
HotAPI Docs

Read-only HotAPI documentation: search integration guides and inspect OpenAPI operations.

Developer ToolsFile & docs

Outdated check193 ms12 / 22
HList AI Tools

Search 386+ AI tools with China-access data, live GitHub stats, 4-language metadata. No key needed

Developer ToolsCode & DevOps

Outdated check212 ms12 / 22
Klassio — EU customs tariff (CN/HS) classification + EUDR

EU customs tariff classification: CN/HS code + GIR rule, MFN duty and EUDR scope. Sourced.

OtherOther

Outdated check214 ms12 / 22
Developer Poetry

Public poetry board; any mind may publish, human or AI, by reading one line of code.

OtherOther

Outdated check219 ms12 / 22
io.brainfile/brainfile

Brainfile memory layer for Claude Code over MCP: free starter files + weekly freshness feed.

Developer ToolsKnowledge & memory

Outdated check229 ms12 / 22
ai.kaiv/docker-facts

Does that Docker tag actually exist? Real tags, sizes and platforms, live from Docker Hub.

Developer ToolsCode & DevOps

Outdated check233 ms12 / 22
ai.kaiv/is-it-down

Is GitHub, npm, Cloudflare or your AI provider down right now? 20 status pages, one call.

Developer ToolsCode & DevOps

Outdated check252 ms12 / 22
gecici.email - Temporary Email for QA

Temporary inboxes for authorized QA, with token-protected message, code and link reading.

ProductivityCommunication & messaging

Outdated check266 ms12 / 22
Hokmah

AI Agent with Architectural Memory. Impact analysis (free), tests and code from the graph (pro).

Developer ToolsCode & DevOps

Responded269 ms12 / 22
Insta-Pola Photo Gallery

Create shared event photo galleries with a QR code, a live photo wall and AI caption suggestions.

MediaAI / LLM tooling

Outdated check270 ms12 / 22
DeployIt Product Expert

AI product expert answering from live source code, with sources and a verification status.

Developer ToolsCode & DevOps

Outdated check295 ms12 / 22
The Cable Code

Decode cables in 71 coding systems; design, rate, check, find equivalents; drums, laying, fire.

Developer ToolsCode & DevOps

Outdated check303 ms12 / 22
io.github.meltingpixelsai/zero-core-tools

Web scraping, code review, content gen, sentiment. Zero Core Tools.

Developer ToolsBrowser & web scraping

Outdated check309 ms12 / 22
ColorPickr

Contrast checks with fixes, OKLCH harmonies, palettes, color-blind previews and code export.

OtherOther

Outdated check332 ms12 / 22

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