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

7938 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
Sponsored Agent Placement

Sponsored, labeled placements on agent-discovery surfaces we operate. Never impersonation.

Developer ToolsCode & DevOps

Responded37 ms13 / 22
llms.txt Readiness

Does a site publish llms.txt, robots permissions and a sitemap agents can use? Bounded check.

Developer ToolsCode & DevOps

Responded37 ms13 / 22
Memory Key Count

Count keys in a JSON object. Values discarded.

Developer ToolsCode & DevOps

Responded39 ms13 / 22
Product For Agents Index

Index for products built for agents: readiness, placement, client center, 7-day trial.

Developer ToolsCode & DevOps

Responded39 ms13 / 22
AI Agent Customers

Reach AI agents that need a tool, and the humans who run them. Measured placements.

Developer ToolsCode & DevOps

Responded49 ms13 / 22
Agent Visibility Check

Is this website visible to AI agents? Robots, llms.txt, sitemap, extraction, then placement.

Developer ToolsCode & DevOps

Responded52 ms13 / 22
Get Agent Customers

Place a product where AI agents discover tools; their operators become customers. 7-day trial.

Developer ToolsCode & DevOps

Responded53 ms13 / 22
Agents Find Your Product

Make a product discoverable to agents: catalog, llms.txt, agent card, hops, MCP door.

Developer ToolsCode & DevOps

Responded57 ms13 / 22
Agent Audience Index

Who the audience is when your customers are agents, and how to be found by them.

Developer ToolsCode & DevOps

Outdated check57 ms13 / 22
Agent Traffic For Startups

Bring AI agents to a startup's public pages through labeled placements and measured hops.

Developer ToolsCode & DevOps

Responded60 ms13 / 22
Agent Placement Trial

Start a 7-day placement trial: card on file, cancel anytime, measured agent hops.

Developer ToolsCode & DevOps

Responded60 ms13 / 22
Unphurl

URL intelligence for AI agents and developers. 16 tools, 25 signal weights, 20 free checks.

Developer ToolsCode & DevOps

Responded68 ms13 / 22
Agent Discovery Index

Where AI agents discover products, and how to be listed there with measured results.

Developer ToolsCode & DevOps

Outdated check72 ms13 / 22
BuyingMesh Procurement

Structured B2B supply search, quoting, sandbox orders and fulfillment status for agents.

Developer ToolsData access / search

Responded75 ms13 / 22
Agent Facing Catalog

Machine catalog for products that want agent clients: surfaces, hops, discovery paths.

Developer ToolsCode & DevOps

Outdated check75 ms13 / 22
io.github.OrionSmithers/agent-data-pro

Research articles and live crypto prices for AI agents via x402 on Base.

Finance & CryptoCode & DevOps

Responded78 ms13 / 22
Copy Markdown

Extract clean markdown, DESIGN.md specs, and link graphs from any URL for LLMs.

Developer ToolsFile & docs

Responded84 ms13 / 22
MeshKore

Find a live agent by describing the task, then call its skills. Availability is probe-verified.

Developer ToolsCode & DevOps

Responded86 ms13 / 22
Agent Channel Placement

Placement across agent channels: MCP, Cursor, Claude, ChatGPT, npm, docs, Smithery, Glama.

Developer ToolsCode & DevOps

Outdated check87 ms13 / 22
Agent First Listing

Agent-first product listing: JSON catalog, agent card, MCP door, hops, measured landings.

Developer ToolsCode & DevOps

Outdated check90 ms13 / 22
Public Board — Anonymous Message Board for AI Agents

Message board for AI agents: read, search and leave notes over HTTP, DNS or a non-CDN mirror.

Developer ToolsCode & DevOps

Outdated check91 ms13 / 22
io.github.CCSTT-dev/callable

API for AI agents to delegate tasks to real humans.

Developer ToolsCode & DevOps

Responded92 ms13 / 22
Agent Marketing Index

How to market a product to AI agents: readiness, placement, measurement, 7-day trial.

Marketing & SalesCode & DevOps

Outdated check93 ms13 / 22
Agent Hops For Your Site

Hops are 302s an agent followed to your site. Count them, attribute them, grow them.

Developer ToolsCode & DevOps

Outdated check93 ms13 / 22

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