MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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.

Connect your agent

7891 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
Grandranker Free AI SEO Tools

Free, no signup: AI crawler check, llms.txt validator, ChatGPT/Perplexity/Gemini citation check.

Marketing & SalesAI / LLM tooling

Responded241 ms14 / 22
SignCheck

Pre-sign safety check for agent wallets: tx, EIP-712, EIP-7702, x402. By Crypto Money Maker

Finance & CryptoPayments & trading

Responded241 ms14 / 22
com.getbillwatchdog/billwatch

Current US streaming and VPN plan prices for AI agents: deals, filters and price history.

MediaAI / LLM tooling

Responded241 ms14 / 22
NuvUI

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

Developer ToolsCode & DevOps

Outdated check241 ms14 / 22
CrawlCheck

Verification layer for the agentic web: a signed answer about any site before an agent acts.

Developer ToolsCode & DevOps

Outdated check243 ms14 / 22
Lunara Agent Network

Work for AI agents: checked missions for points, machine-marked trials, ranks, a free domain scan

Developer ToolsCode & DevOps

Outdated check245 ms14 / 22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

Outdated check245 ms14 / 22
MiniMindsLab MCP Tools

Deterministic MiniMindsLab utilities for AI agents over MCP.

Developer ToolsCode & DevOps

Responded246 ms14 / 22
com.expandingweb/agentic-commerce-readiness

Score a Magento or Adobe Commerce store on eight AI agent-readiness checks.

E-commerceData access / search

Responded246 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
Flashift

Zero-key, non-custodial cross-chain crypto swap aggregator for AI agents: 100+ chains, 15+ providers

Finance & CryptoPayments & trading

Outdated check248 ms14 / 22
GEO-bot

Free check whether a website is technically open to AI assistants (AI crawlers, llms.txt, JSON-LD).

OtherBrowser & web scraping

Responded249 ms14 / 22
Verifai — Email Verification & Domain Intelligence

Email verification and domain intelligence for AI agents. MX, RDAP, SSL checks. 25 free credits.

Developer ToolsCommunication & messaging

Responded249 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
io.github.digitalweb33333-creator/x402-endpoints

x402 paid API tools for AI agents on Base: EU/global registries, crypto, wallet & agent trust.

Finance & CryptoPayments & trading

Responded255 ms14 / 22
finance.marx/marx-finance

Autonomous AI agents research market events and publish aggregated forecasts.

Developer ToolsCode & DevOps

Responded255 ms14 / 22
Kenwea — Sandbox Attestation & Agent Marketplace

Signed sandbox verdicts on any artifact, plus an agent marketplace. No key, no signup, no payment.

Finance & CryptoPayments & trading

Outdated check255 ms14 / 22
Surfing Dog

Find businesses an AI assistant can book or order from, check a site for agents, reach an inbox.

ProductivityCommunication & messaging

Responded256 ms14 / 22
ICARE live esports predictions

AI agents predict live esports games settled by an AI referee, with gasless x402 USDC bets on Base.

Finance & CryptoPayments & trading

Outdated check256 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
Synthex Forge — x402 Paid Agent Services

Paid agent services settled in USDC on Base via x402. Signed, verifiable, and free to verify.

Finance & CryptoPayments & trading

Outdated check263 ms14 / 22
HirePulse Agent Gateway

27 tools for company, hiring and commerce data. 10 free calls per agent per day, then USDC on Base.

Developer ToolsCode & DevOps

Outdated check263 ms14 / 22
DomainCheck

Domain and email trust checks for agents: DNS, SPF/DMARC, disposable email. By Crypto Money Maker

Finance & CryptoCommunication & messaging

Responded267 ms14 / 22
AgentData — crypto market data with a checkable record

Verifiable crypto signals, recorded history and always-on monitoring for AI agents via x402 on Base.

Finance & CryptoData access / search

Responded267 ms14 / 22

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