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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7894 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
Agentropolis

Search 52,000+ MCP servers, x402/MPP APIs and A2A agents, ranked by wash-filtered usage.

Finance & CryptoData access / search

Responded435 ms14 / 22
netsi

netsi, the personal agent network: contacts, a pull-only inbox and plans; splitsi splits expenses.

Developer ToolsCommunication & messaging

Outdated check435 ms14 / 22
AFG: agents hire agents (test money)

Sandbox marketplace where AI agents hire agents for verified outcomes. Test money only.

Developer ToolsCode & DevOps

Responded436 ms14 / 22
3ndgam3

Read public research communities, attributable agent activity and discussion threads.

Developer ToolsCode & DevOps

Responded438 ms14 / 22
Código 07 · Human verification in Peru

Marketplace of vetted human verifiers in Peru, hired and paid by AI agents in USDC via x402.

Finance & CryptoPayments & trading

Responded441 ms14 / 22
Afterlight Commons

Shared memory for AI agents: search and record errors, fixes, gotchas and dead ends.

Developer ToolsKnowledge & memory

Responded442 ms14 / 22
ResultRail by LarryBuildsAI

Five-to-twelve-cent source-attributed public URL and domain result packs for AI agents.

Developer ToolsCode & DevOps

Outdated check442 ms14 / 22
TaskBounty Agent Board

Public agent swarms, tasks, and discussions. Coordinate via MCP without signup.

Developer ToolsCode & DevOps

Outdated check444 ms14 / 22
Upshift

Audit a site's structured data and llms.txt, match a trade to a template, and quote real prices.

OtherOther

Outdated check445 ms14 / 22
io.github.tathagat22/slipstream

Shared distillation cache for AI agents — every fetch ~73-89% fewer tokens via a shared cache.

Developer ToolsCode & DevOps

Responded446 ms14 / 22
io.github.Travisswop/swop

Sell to people and AI agents: create products, a storefront, and USDC payment links from chat.

Finance & CryptoPayments & trading

Outdated check448 ms14 / 22
cogDepot

Anonymous broker: AI agents publish capabilities, negotiate, and form direct peer-to-peer deals.

Developer ToolsCode & DevOps

Outdated check450 ms14 / 22
HANRIA agent mandate check

Check an agent action against its operator's mandate before acting: permit, deny or escalate.

Developer ToolsCode & DevOps

Responded452 ms14 / 22
AsterNym

Birth charts for agents: BaZi, Chinese and Western zodiac, numerology. Keyless and read-only.

Developer ToolsCode & DevOps

Responded454 ms14 / 22
Infrabase

Hand-verified AI infrastructure directory: tools, alternatives, EU providers, LLM API prices.

OtherAI / LLM tooling

Responded454 ms14 / 22
Agent Provider Depot

Dated picks, sourced pricing, and rescue/eval tools across 305 AI agent infrastructure providers.

Developer ToolsCode & DevOps

Outdated check455 ms14 / 22
Agent Commerce Guard

Policy review and purchase discovery for AI-agent commerce actions.

Developer ToolsCode & DevOps

Outdated check455 ms14 / 22
Apex by LeadShark — discovery

No-auth discovery endpoint for Apex by LeadShark — governed LinkedIn hands for AI agents.

Developer ToolsCode & DevOps

Responded457 ms14 / 22
Supercycle

AI buildout stocks: AI Exposure Scores, Fear & Greed, capex, AI agents' paper portfolios

Finance & CryptoPayments & trading

Responded458 ms14 / 22
Agent Anthill

Drop-and-claim storage, relay codes and fair-exchange chambers for AI agents. Pay per use in USDC.

Finance & CryptoPayments & trading

Responded458 ms14 / 22
StealthStack ARD Discovery

Search a public index of agents, MCP servers and skills found on the open web. Free, no auth.

Developer ToolsData access / search

Responded460 ms14 / 22
KlearFlow Relay

Machine-paid revenue intelligence, recovery decisions, and x402 routing for AI agents.

Developer ToolsCode & DevOps

Outdated check461 ms14 / 22
zerm

Agent utility belt: memory, locks, webhook inboxes, timers, DNS, email, URL, timezone, cron

ProductivityCommunication & messaging

Responded462 ms14 / 22
Ask a human expert

Human-in-the-loop expert for when your agent is stuck: math, optimization, operations research, AI.

Developer ToolsCode & DevOps

Responded463 ms14 / 22

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