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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7911 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
price-tracker-mcp

Product price checks and affiliate link building for AI shopping agents.

E-commerceData access / search

Responded765 ms14 / 22
Dayze — Life Context

Life context for agents: get_context_pack + public notable packs. x402 + OAuth.

Finance & CryptoPayments & trading

Outdated check765 ms14 / 22
x402 Web Tools

Pay-per-call tools for agents: web page to Markdown, tech stack, email domain check (x402 USDC)

Finance & CryptoPayments & trading

Responded767 ms14 / 22
Mode VC Chart: Which AI Labs Get the Most Chatbot Arena Votes?

OpenAI's models hold 17.9% of all 12.3M Arena votes and none of the top 20 seats. Anthropic's.

Developer ToolsAI / LLM tooling

Responded767 ms14 / 22
cuttingfloor

Hosted video editing for AI agents: cut, caption, mix and export real video. Sign in with OAuth.

MediaCode & DevOps

Outdated check767 ms14 / 22
Weir

Read, price and verify creator posts on Sui. An agent holds the same account a person holds.

OtherOther

Responded769 ms14 / 22
Mode VC Chart: Best AI Models by Category: Google vs. Anthropic Ranks

Google holds #1 in 6 of 8 Arena categories; Anthropic in 2. OpenAI has no category in the top.

Developer ToolsAI / LLM tooling

Responded771 ms14 / 22
Mode VC Chart: Best LLM for Coding: The Arena Coding Leaderboard

claude-opus-4-6-high leads Arena coding at 1535. Anthropic has held #1 for 280 days, but Z.ai.

Marketing & SalesAI / LLM tooling

Responded773 ms14 / 22
Mode VC Chart: Anthropic SDK vs. OpenAI SDK: npm Downloads

Anthropic's SDK went from 34% to 97% of the OpenAI SDK's weekly npm downloads in 46 weeks. It.

Developer ToolsAI / LLM tooling

Responded776 ms14 / 22
Mode VC Chart: Best AI Model vs. Most Popular AI Chatbot

Anthropic builds 14 of the Arena's top 50 models and OpenAI builds 5. But 44% of US adults use.

Developer ToolsAI / LLM tooling

Responded777 ms14 / 22
SoundChain

Music network for AI agents: get a song from your name, post, review tracks, leave notes.

MediaAI / LLM tooling

Responded778 ms14 / 22
Online Web Directory

How websites treat AI agents: bot walls, JS needs, robots rules, llms.txt. Look up before you fetch.

Developer ToolsData access / search

Responded785 ms14 / 22
io.github.dario933/grith-mcp

GRITH MCP for persistent citizen identity, private memory, return proof, and city doors.

Developer ToolsCode & DevOps

Outdated check786 ms14 / 22
FastDrop

Liveness layer for MCP: probe endpoints, publish real tools; agents discover, submit, vote.

Developer ToolsCode & DevOps

Responded789 ms14 / 22
Agent Zero — ERC-8004 Trust Filter

Trust filter for ERC-8004: only ~3.8% of x402 endpoints hit 5+ payers/30d. Free MCP; x402 upgrade.

Finance & CryptoPayments & trading

Responded790 ms14 / 22
BotKelp

Verified component catalog over remote MCP: agents pick ids and get a project that builds.

Developer ToolsCode & DevOps

Outdated check790 ms14 / 22
ESG Hub MCP Server

ESG knowledge base for AI agents: hybrid search, glossary, frameworks, industries, graph traversal.

Developer ToolsKnowledge & memory

Outdated check798 ms14 / 22
varg how to

Video how-to search for AI agents: 2,000+ video skills, tutorials and FFmpeg recipes. No key.

MediaData access / search

Responded800 ms14 / 22
com.setlineapp/setline

Live festival data for AI agents: lineups, set times, dates, locations and ticket links worldwide.

Developer ToolsCode & DevOps

Responded801 ms14 / 22
Toolbooth

Pay-per-call tools for AI agents: Solana, DEX, perps, prediction markets, DeFi, web. USDC via x402.

Finance & CryptoPayments & trading

Responded804 ms14 / 22
A2APark

Public behavioral test environment for AI agents with stateful rides and signed scorecards.

Developer ToolsCode & DevOps

Outdated check805 ms14 / 22
Plumbline — a trust layer for LLM answers

Every figure re-checked against SQL-computed facts; unsupported questions refused with the reason.

Developer ToolsDatabase

Responded806 ms14 / 22
TrollBridge MCP

Pay-per-call intel bridge for AI agents — 18 tools; tolled lanes $0.02 USDC via x402

Finance & CryptoPayments & trading

Outdated check806 ms14 / 22
com.airaptr/raptr-agent-builder

Turn an idea or meeting transcript into a working single-file AI agent, check it, use it right away.

ProductivityFile & docs

Responded809 ms14 / 22

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