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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7910 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
Income Factory Toll Fabric

Eight metered machine-intelligence tools for AI agents with native x402 payment paths.

Finance & CryptoPayments & trading

Outdated check586 ms14 / 22
AI Skill Directory

Search and fetch curated AI agent skills, prompts and MCP servers.

Developer ToolsData access / search

Responded592 ms14 / 22
mcp-x402 — MCP server for agents with autonomous USDC/RLUSD payments

85+ pay-per-call MCP tools: trading, federal grants/contracts, SEC, FTD. x402 USDC/RLUSD. No keys.

Finance & CryptoPayments & trading

Outdated check592 ms14 / 22
Launch Shots

Turn your app's screens into editable App Store and Google Play screenshot sets, from your agent.

Developer ToolsCode & DevOps

Responded593 ms14 / 22
ca.swiftsign/mcp

E-signatures for agents: mint a sandbox key, send PDFs, track status, download the sealed result.

Developer ToolsCode & DevOps

Responded595 ms14 / 22
X402 Git

Buy private git repos and agent skills with USDC over x402. Read the manifest free, then pay.

Finance & CryptoPayments & trading

Responded598 ms14 / 22
RUAGENTIC Directory

Search MCP servers, MCP clients and AI agents, and retrieve listing details. Free, read-only access.

Developer ToolsData access / search

Outdated check600 ms14 / 22
io.github.m9labs-railscope/verantis-mcp

Verified directory for machine payments (x402 & MPP): check services and wallets before agents pay.

Finance & CryptoPayments & trading

Outdated check602 ms14 / 22
io.github.bevanding/signaldaemon

Narrative & signal intelligence for AI agents: crypto/AI/macro convergence & divergence.

Finance & CryptoCode & DevOps

Responded603 ms14 / 22
AgentDiet Coding Agent GitHub Repo, Dependency & License Security Auditor

Evaluates any GitHub repository for license risk, maintenance velocity, stars/forks, and supply-c.

Developer ToolsCode & DevOps

Outdated check603 ms14 / 22
com.mart402/docs

Documents and web for AI agents: PDF parse, OCR, web extract, invoice checks. x402, no API key.

Finance & CryptoPayments & trading

Responded604 ms14 / 22
MRR Ledger

Free, no key: sourced, dated revenue of real AI-agent businesses. Start with search_businesses.

Finance & CryptoData access / search

Responded605 ms14 / 22
Northwestern University Libraries Digital Collections API

Agent integration with the Northwestern University Libraries Digital Collections API

EducationCode & DevOps

Outdated check605 ms14 / 22
A.U.G.U.R Foresight

Solana + pump.fun intel for agents: launch verdicts, token risk, dev/wallet records, smart money.

Finance & CryptoPayments & trading

Responded608 ms14 / 22
Mode VC Chart: Ollama Downloads: Is Local LLM Adoption Keeping Up?

On npm, Ollama's client fell from 27 to 6.6 downloads per 1,000 cloud lab SDK downloads in 46.

Developer ToolsCode & DevOps

Responded609 ms14 / 22
Mode VC Chart: MCP Adoption: Model Context Protocol SDK Downloads

The MCP SDK had 52.3M npm downloads in the week of 24 Aug, 1.3× the OpenAI SDK and more than.

Developer ToolsCode & DevOps

Responded609 ms14 / 22
X402-Broker Global B2A & A2A Tool Marketplace

Autonomous agent clearinghouse indexing 23,000+ MCP, A2A, x402 & MPP tools with instant execution.

Finance & CryptoPayments & trading

Responded610 ms14 / 22
SCRIPTMASTERLABS — GhostKey MCP

Remote MCP for compliant pay-per-use agent capabilities with x402 execution.

Finance & CryptoPayments & trading

Outdated check610 ms14 / 22
HaggleBoard

Free, open request-and-offer board for AI shopping agents: post a need, get offers. Demo sellers.

E-commerceData access / search

Outdated check612 ms14 / 22
Mash Prime

Read Mash Prime's essays and build notes on agentic systems, memory, approvals, and workflows.

ProductivityAutomation & workflows

Responded614 ms14 / 22
Remnant — Reusable Agent Experience

Search agent experience, inspect evidence, and report real outcomes through MCP.

Developer ToolsData access / search

Responded615 ms14 / 22
JSON to Types

Convert JSON samples into TypeScript interfaces and Zod schemas, with inference caveats.

Developer ToolsAI / LLM tooling

Outdated check615 ms14 / 22
ai.creationloop/creationloop

CreationLoop is your Marketing Agent. Read the overview, offer, and FAQ; apply as a design partner.

Marketing & SalesData access / search

Responded617 ms14 / 22
A2AWire Benchmark: Support Agent Trials

Free to compete: testnet faucet funds everything. Support trials. Get scored, get hired.

Developer ToolsCode & DevOps

Outdated check617 ms14 / 22

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