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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7939 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
Agent Hops For Your Site

Hops are 302s an agent followed to your site. Count them, attribute them, grow them.

Developer ToolsCode & DevOps

Outdated check93 ms13 / 22
io.github.EzeAlfaro/legible-check

On-chain RPC data for AI agents: block, gas, balance, tokens, receipts, decode. x402 USDC.

Finance & CryptoPayments & trading

Responded95 ms13 / 22
Agent Discovery Placement

Labeled placement in agent discovery indexes, measured with daily HMAC nicknames.

Developer ToolsCode & DevOps

Outdated check96 ms13 / 22
Agent Lead Generation

Leads from agents: hops attributed with a per-hop utm_id from discovery to trial to invoice.

Marketing & SalesPayments & trading

Outdated check99 ms13 / 22
CleanPage

Turn any URL into clean, structured, agent-ready content. $0.02/call via x402 on Base.

Developer ToolsCode & DevOps

Responded103 ms13 / 22
Open Claw x402 Tools

Paid tools for AI agents via x402 (USDC on Base): text rewrite, writing grade, code lookups.

Finance & CryptoPayments & trading

Responded131 ms13 / 22
Agent Crawl Readiness

Bounded crawl-readiness check for agent access: robots.txt, sitemap.xml, llms.txt, homepage.

Developer ToolsBrowser & web scraping

Outdated check139 ms13 / 22
NTWX Studio catalogue

Read-only NTWX Studio catalogue for consumer agents. No checkout.

Finance & CryptoPayments & trading

Responded147 ms13 / 22
AI Website Summarizer

Add an AI prompt widget to any website for AI SEO, GEO, and LLM mentions.

Developer ToolsCode & DevOps

Responded156 ms13 / 22
Advertise To Agents

Agent-to-agent advertising: labeled placements where autonomous agents look for tools.

Marketing & SalesCode & DevOps

Outdated check177 ms13 / 22
Agent Ready Website Check

Check whether a website is readable by AI agents: robots, llms.txt, sitemap, HTML. Bounded.

Developer ToolsCode & DevOps

Responded181 ms13 / 22
llms-text

Generate, validate, and deep-crawl /llms.txt and /llms-full.txt files for AI agents.

Developer ToolsBrowser & web scraping

Responded209 ms13 / 22
Arsenal Decision Engine

R_net LP risk evaluator for DeFAI agents. IL + Breakeven Corridor O(1). L402 Lightning paywall.

Developer ToolsCode & DevOps

Responded225 ms13 / 22
HSH Data-on-Demand

Made-to-order data for AI agents: company intel, B2B contacts, scraping. Pay per call via x402.

Developer ToolsCode & DevOps

Outdated check246 ms13 / 22
SanctionsAI

OFAC sanctions screening for AI agents: 1,050 wallets, 19,389 SDN names, <100ms. Free tier, no key.

Finance & CryptoPayments & trading

Outdated check253 ms13 / 22
APEX EVM Reads

Agent reads, ETH/Base/Arc/BNB: prices, FX, sanctions, payment checks, balances, NFTs, gas, ENS.

Finance & CryptoPayments & trading

Responded296 ms13 / 22
com.minradar/minradar

App Store opportunity data for coding agents: unmet demand, paying markets, build briefs.

Developer ToolsCode & DevOps

Responded337 ms13 / 22
io.purchaseiq/mcp

Pre-purchase trust checks for AI agents: recalls, scam signals, proceed/caution/avoid verdict.

Developer ToolsCode & DevOps

Responded360 ms13 / 22
travel.art

Art-tourism data for AI agents: biennales, art fairs, museums, layover itineraries with 2026 facts.

TravelData access / search

Responded370 ms13 / 22
Agent Acquisition Desk

See what agents do on a page: hops, agents, doors, channels. Then place the product.

Developer ToolsCode & DevOps

Outdated check394 ms13 / 22
mesh-01 / aethelon-nexus

Sovereign orchestration node: signed receipts, self-serve agent keys, peer federation.

Developer ToolsCode & DevOps

Responded403 ms13 / 22
RogerThat

Real-time chat hub for AI agents — Claude Code, Cursor, Cline, Codex over MCP or REST.

Developer ToolsCode & DevOps

Outdated check457 ms13 / 22
io.github.mikerawsonnz/authenticated-llm-agent

JWT-gated LLM gateway: authenticate (bcrypt/JWT), then run a LangChain-on-Vertex Gemini completion.

Developer ToolsAI / LLM tooling

Responded472 ms13 / 22
Apuchat

Real-time chat for AI agents. Claude Code, Cursor, Cline and Codex join channels over MCP.

Developer ToolsCode & DevOps

Outdated check475 ms13 / 22

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