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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7914 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
FetchSandbox

A deterministic verification engine for agents. Proves a fix: fails on the old code, passes on new.

Developer ToolsCode & DevOps

Outdated check1660 ms14 / 22
Agent Coliseum MCP

Free Streamable HTTP MCP arena for 1v1 AI agent skill battles and Gladiator Badges.

Developer ToolsCode & DevOps

Outdated check1714 ms14 / 22
SpiritWave Labs Divination Engine

Divination for AI agents: Hafez, Tarot, I Ching, Runes, Geomancy, and the five-oracle Council.

Developer ToolsCode & DevOps

Responded1719 ms14 / 22
Objelio Immobiliensuche

Search apartments, houses and plots for sale or rent in Germany, listed by real estate agents.

Real Estate & PropertyData access / search

Responded1768 ms14 / 22
RoboPartPicker

Source-linked robotics projects, bills of materials and components for AI agents.

Developer ToolsCode & DevOps

Outdated check1838 ms14 / 22
Cashboard Signals

Market data for agents: perps, OI, funding, Solana wallet swaps. Paid per call in USDC over x402.

Finance & CryptoPayments & trading

Responded1852 ms14 / 22
Agent Reliability

Testing, benchmarking and auditing autonomous AI agents — methods, harnesses, evidence

Developer ToolsCode & DevOps

Responded1887 ms14 / 22
Screenrove: UI Design Reference & Screenshots (free Mobbin alternative)

Real SaaS UI screenshots for coding agents: onboarding flows, pricing pages, design inspiration.

Developer ToolsCode & DevOps

Responded2059 ms14 / 22
Agent Spend Guard — owner-set purchasing guardrails

Free spend guardrails for AI agents: approve/deny/ask_user, caps, dupes.

Developer ToolsCode & DevOps

Outdated check2122 ms14 / 22
Bench Agent Discovery

Discover public AI agents, reusable recipes, and trusted benchmark evidence by task.

Developer ToolsCode & DevOps

Responded2143 ms14 / 22
Agent Concierge

Find AI agents, MCP servers and x402 APIs for a task, ranked by recorded checks and quality.

Finance & CryptoPayments & trading

Responded2216 ms14 / 22
Design Lounge

A UI design library and skill for agents, with a page review for AI giveaways, SEO, AEO, and GEO.

Developer ToolsCode & DevOps

Outdated check2269 ms14 / 22
com.htagai/htag-docs

Public HTAG discovery for MCP tools, API endpoints, OpenAPI ops, and agents.

Developer ToolsCode & DevOps

Responded2283 ms14 / 22
Agent Groundcrew

Human field services for AI agents: site photos, equipment checks, remote hands and coordination.

MediaAI / LLM tooling

Outdated check2324 ms14 / 22
DwellDelta - Australian rent check and property indicators

Australian and NZ rents by area, NSW sale prices and a local rent check, for AI agents.

OtherOther

Responded2348 ms14 / 22
ai.jawz/jawz

Live macro data for AI agents: regime, conditions, liquidity, with input provenance. No signup.

Developer ToolsCode & DevOps

Responded2454 ms14 / 22
io.github.assafbar2/agentswitchboard

Search a curated directory of 800+ AI agents, MCP servers, and agentic tools.

Developer ToolsCode & DevOps

Outdated check2474 ms14 / 22
io.github.pooriaarab/agentwalletindex

Wallets and rails that let AI agents spend money safely.

Finance & CryptoPayments & trading

Outdated check2545 ms14 / 22
arifOS — Constitutional AI Kernel

Constitutional verdict layer for AI agents. SEAL/HOLD before mutation. F1-F13 floors; audit ledger.

Finance & CryptoCode & DevOps

Responded2671 ms14 / 22
Anthropic Billing

Anthropic organization usage and cost reporting through an admin API key connected by the user.

Finance & CryptoPayments & trading

Responded2701 ms14 / 22
Clawfight

An AI agent battle league: build a crab fighter over MCP and rap-battle in a rendered arena.

Developer ToolsCode & DevOps

Responded2836 ms14 / 22
Tanod

Pay-per-call agent tools: PDF, OCR, translation, news search, prediction markets, web, chain reads.

MediaData access / search

Responded2946 ms14 / 22
Agent Utility Network (AveDaris)

Paid agent tools over x402 (Base USDC): company/vendor research, domain trust, web page reading.

Finance & CryptoPayments & trading

Outdated check3064 ms14 / 22
Agent Utility Network

Outcome-first x402 services led by AveDaris Company Intelligence with free task routing on Base.

Developer ToolsCode & DevOps

Outdated check3279 ms14 / 22

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