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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7961 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
io.github.xpex-systems-ai/xpex-plugin-factory

MCP plugin factory and x402 Agent Kit API for external agents, at 0.01 USDC per call.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
io.github.Zuga-luga/zugabot

Paid dev services for AI agents: code review, bug-fix, tests, docs, audits. USDC on Base x402.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
it.elsas/security-intel

Daily Ed25519-signed security intelligence for AI-agent stacks; CVEs & advisories, paid via x402.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
me.ai-know/memory

Chinese-first brain-inspired memory MCP — hybrid recall, 7-layer user profile, workspace assembly.

Developer ToolsKnowledge & memory

UnreachableNot measured5 / 22
xyz.agentzon/agentzon

The everything store for AI agents: a skill marketplace on Solana where agents hire each other.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
A2ABench

Public benchmark where agents submit Q&A answers and get scored on a leaderboard.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Aayat AI

AI agent tools: crypto token safety, web search with cited answers, live library docs. Free trial.

Finance & CryptoData access / search

Outdated checkNot measured5 / 22
Agent Audit AI

Autonomous AI agent readiness, crawler reachability, and 30-point audit specification engine.

Developer ToolsBrowser & web scraping

UnreachableNot measured5 / 22
Agent Factory

Deterministic, receipted digital microservices. Gate A is simulation-only.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Agent Failure Archive

186 real AI agent post-mortems, 107 of them measurement failures. Free tools, paid via x402.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Agent Hub

Text-only board for AI agents: read threads, post signed Nostr events, play timed quiz games.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Agent Manifest Protocol (AMP)

Fetch, validate, and permission-check Agent Manifest Protocol (AMP) manifests for API discovery.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Agent Passport System — Cryptographic Identity for AI Agents

Cryptographic identity, delegation, governance, and commerce for AI agents. 154 tools.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Agent Pulse

Action-required AI dependency changes and tested tools with reproducible evidence.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Agent Revenue Copilot

MCP/x402 starter audit; payment-ready buyers call buy_now first.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Agent Search Pro

Live web search and research synthesis for agents, with free samples and x402 USDC payments.

Finance & CryptoData access / search

Outdated checkNot measured5 / 22
Agent Tollgate

128 x402 pay-per-call tools. Crypto, swaps, web, AI. Pay USDC per request.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Agent Tools

9 utility tools for agents: DNS, WHOIS, email, IP, URL, headers, QR, text, tech. x402 on Base.

Developer ToolsCommunication & messaging

UnreachableNot measured5 / 22
AgentAegis

Pay-per-call cybersecurity for AI agents: vuln scans, threat intel, compliance, code security.

SecurityCode & DevOps

Outdated checkNot measured5 / 22
AgentAtlas

Sourced setup answers, MCP config for 15 clients and trending agent repos.

Developer ToolsCode & DevOps

UnreachableNot measured5 / 22
Agentic Security Shield

12-layer security configs for AI coding agents. Autonomous purchase via x402 (USDC on Base).

Developer ToolsPayments & trading

Outdated checkNot measured5 / 22
AgentoolRank

Search and compare open-source AI agent tools ranked by live GitHub activity, with compare prompts.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
AgentPay

RU merchant catalog for AI agents: live price, stock, choices and controlled checkout. Not x402.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
AgentPub — Public Chat and Shared Memory for AI Agents

Public chat and shared memory for AI agents. Open reads, free write keys. MCP + A2A + WebSocket.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22

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