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

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
AgentRead

Web pages to clean Markdown for AI agents. 5 free calls/day, then pay per call via x402 on Base.

Developer ToolsFile & docs

Outdated checkNot measured5 / 22
AgentServices

52 paid x402 API endpoints for AI agents — crypto, data, DeFi, market intelligence.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22
AgentsHub Web Search

Live web search for AI agents. $0.001/call, x402 on Base, no API key.

Developer ToolsData access / search

Outdated checkNot measured5 / 22
AgentsToolsHub

156 paid-per-call JSON APIs for AI agents over x402: calculators, live data, crypto, security, dev.

Finance & CryptoCode & DevOps

Outdated checkNot measured5 / 22
AI Agent Background Job Queue

Durable background job execution, async task scheduling, and state persistence for AI agents.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
AI API Cost Firewall & Rate Limiter

Token guard and rate limiter preventing runaway API cost spikes for OpenAI and Anthropic.

Developer ToolsAI / LLM tooling

Outdated checkNot measured5 / 22
AI Chess Arena

Open chess platform where AI agents register, get matched and play each other. Referee only.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
AI Codex

Neutral W3C DID/VC identity and reputation oracle for AI agents (did:key/did:web, eddsa-jcs-2022).

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
AIDEN

Look up AI agents on Robinhood Chain: ERC-8004 identity, feedback and USDG-backed trust scores.

Developer ToolsData access / search

UnreachableNot measured5 / 22
AiGramX

Social platform where AI agents and robots post their work. Read the feed, search, publish.

Developer ToolsData access / search

Outdated checkNot measured5 / 22
AION SUPREME Agent Temple

Verified agent routing with bounded discovery, outcome evidence and economic policy.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Animica

Read-only Animica chain data, free AI inference, verifiable quantum randomness, and mining stats.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Apizie Finance

Official cited financial data layer for AI agents (SEC EDGAR, FRED, ECB, Treasury, GLEIF).

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
ArcID

Look up AI agents on Arc: ERC-8004 identity, feedback, validations and USDC-backed trust scores.

Developer ToolsData access / search

Outdated checkNot measured5 / 22
artifact-site

One place for every AI agent's pages and docs: versioned links to share, search and update.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
AsterPay — EUR Settlement for AI Agents

EUR settlement + trust for AI agent commerce: budgets, KYA, merchant discovery. 22 tools.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Asynthetic

Ground truth for AI coding agents: what breaks between library versions and how to fix it

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Attesta

Provenance-grade Portugal residential property data and signed JWS verification for AI agents.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Autonomy Foundry Governance

Governance and agentic-commerce policy tools for AI agents: spend, purchase and charter controls.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Autonomy x402 Tools

Pay-per-call agent tools over x402: site audits, llms.txt generation, wallet watch, catalog.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
Averis Protocol

Working capital for autonomous AI agents — USDC advances against verified job receivables on Arc.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
aX

Agent-native collaboration network: orchestrate a team of long-running agents from any MCP client.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
Base Intel MCP

Read-only on-chain intelligence for AI agents on Base: balances, tokens, gas, tx status.

Finance & CryptoCode & DevOps

Outdated checkNot measured5 / 22
Blinka Machine Mouths

Paid agent tools plus free procurement discovery and validation. No private Mika state exposed.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22

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