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.

Connect your agent

7919 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
Trust Check

Base crypto safety for agents: honeypot/tax test, address poisoning, rug feed, creator record.

Finance & CryptoCode & DevOps

Responded95 ms13 / 22
Helixar Security

Security tools for AI agents: scan MCP servers, validate HDP delegation chains, audit releases.

Developer ToolsCode & DevOps

Responded95 ms13 / 22
Agent Preflight

Budgeted agent preflight: allow|block|reuse|defer|advise. Never executes destination tools. Free MCP

Developer ToolsCode & DevOps

Responded95 ms13 / 22
io.github.tony8713/casa

Private, permanent encrypted storage for AI agents. Paid per call in USDC via x402.

Finance & CryptoPayments & trading

Responded95 ms13 / 22
FrontMCP docs

FrontMCP's docs for coding agents: search, pages, APIs, examples and upgrades, by FrontMCP release.

Developer ToolsData access / search

Responded97 ms13 / 22
x402 Agent Tools

Pay-per-call web, Base onchain and crypto-alert tools for agents. USDC on Base via x402, no API key.

Finance & CryptoPayments & trading

Outdated check97 ms13 / 22
InferCPI

AI inference price index: token prices, cost per capability, open vs closed, hosts, cost per task.

OtherAI / LLM tooling

Outdated check97 ms13 / 22
ToolSchema Forge

Convert, lint and generate LLM tool schemas for OpenAI, Anthropic, Gemini and MCP

Developer ToolsAI / LLM tooling

Responded98 ms13 / 22
com.cargovox/mcp

CargoVox freight tracking and shipment info via AI agents

Developer ToolsCode & DevOps

Responded98 ms13 / 22
Japan RuleWatch

Japan tourism entry and ecommerce evidence MCP for business agents; free tools and x402 pack.

TravelCode & DevOps

Responded99 ms13 / 22
Datoka Agent

Signed agent execution declarations. Free verification; issuance 0.002 USDC via x402 on Base.

Finance & CryptoPayments & trading

Responded99 ms13 / 22
Agent Shaniu (SHANIU)

First AI-driven community meme coin on BSC. Mint, trade and referral tools for AI agents.

Developer ToolsCode & DevOps

Outdated check99 ms13 / 22
IranTools (paid)

Persian and Iranian utilities for agents plus text tooling. Paid via x402 or MPP.

Finance & CryptoPayments & trading

Outdated check100 ms13 / 22
Agent Billing Primitives (Dirtsmith)

Usage metering, spend cap (reserve before pay), lease lock, semaphore, heartbeat for agents. Free tr

Finance & CryptoPayments & trading

Responded101 ms13 / 22
Priority — TypeScript Compiler Intelligence

Stateless TS/JS compiler facts for agents: references, imports, impact. No repo index or OAuth.

Developer ToolsCode & DevOps

Responded101 ms13 / 22
COTRUGLI Agent Recruitment

Public read-only discovery of agent, model, training, task, and verification opportunities.

Developer ToolsCode & DevOps

Responded103 ms13 / 22
HODLXXI Read-Only

Public read-only MCP server for HODLXXI agent identity, trust, receipts, and verification.

Developer ToolsCode & DevOps

Outdated check103 ms13 / 22
Website Starter

Create Markdown instructions for AI agents to build, deploy, and maintain an Astro website.

Developer ToolsFile & docs

Responded104 ms13 / 22
HoldKit

Idempotency keys, locks, timers, and inboxes for agents over MCP. No payments.

Finance & CryptoPayments & trading

Responded104 ms13 / 22
Agent Toolbox

Everyday tools for AI agents, paid per call with x402: images, markdown, speech-to-text, embeddings.

MediaAI / LLM tooling

Responded105 ms13 / 22
Deduped AI use cases

Weekly hot AI GitHub repos with step-by-step use cases and agent prompts, plus AI news. No key.

Developer ToolsCode & DevOps

Responded105 ms13 / 22
PayperAnswer

Pay-per-call chat on GPT-6.1, Claude, Gemini and Grok over x402. No API key; a failed call is free.

Finance & CryptoAI / LLM tooling

Responded105 ms13 / 22
Fiperly

Fiperly: AI websites, Agent-Ready, KI-Gedaechtnis, talks and the book on AI. Read-only.

Developer ToolsCode & DevOps

Responded106 ms13 / 22
ch.valetvoisin/valetvoisin

Swiss services marketplace. AI agents prepare mission drafts; a human always confirms and pays.

Developer ToolsCode & DevOps

Responded106 ms13 / 22

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