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

2930 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
Agent Router

Discover and call AI agents via MCP. Supports A2A agents and platform agents with async tasks.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
Agent Rynku - Warsaw Stock Exchange (GPW) data for your agent

Public GPW daily prices, financials, ratios, company search, earnings calendar and WZA dividends.

Finance & CryptoData access / search

Requires authNot measured5 / 22Not checked yet
Agent-Native Calendar

Agent-Native Google Calendar - manage events, sync, and public booking

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured5 / 22
Agent-Native Clips

Screen recording, meeting notes, and voice dictation - all with AI

ProductivityCode & DevOps

Requires authOutdated checkNot measured5 / 22
Agent-Native Content

Open-source Obsidian for MDX - edit local docs with agent assistance

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured5 / 22
Agent-Native Mail

Agent-Native Superhuman - email client with keyboard shortcuts and AI triage

Developer ToolsCommunication & messaging

Requires authOutdated checkNot measured5 / 22
AgentCron

Schedule tasks for later from your AI agent: reminders, delayed webhooks, recurring jobs.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
AgentFirstStack

Analytics, tag manager, email inboxes and session replay an AI agent sets up itself. Open source.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
AgentFirstStack Mail

Email inboxes for AI agents: wait for mail, pull out verification codes and links, reply. Free.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
AgentiSend

Email API for apps and AI agents: budgets per key, a kill switch, refusals that name the fix.

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22Not checked yet
AgentLair

Give AI agents a real email address, vault, calendar, and task delegation via MCP.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
AgentMD

Convert PDF, DOCX, HTML, and URLs to clean, LLM-ready markdown with tables preserved

Developer ToolsFile & docs

Requires authNot measured5 / 22Not checked yet
AgentPay (all tools)

Pay-per-call web extract, DNS/WHOIS/IP lookup, PDF/RSS/sitemap tools. x402 USDC on Base/Algorand.

Developer ToolsPayments & trading

Requires authNot measured5 / 22Not checked yet
AgentPay Doc Tools

Pay-per-call PDF to text, RSS/Atom to JSON, sitemap to URLs for agents. x402 USDC, Base/Algorand.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
AgentPing

Let your AI agent notify you by email, Slack, Discord, or webhook. One tool: send_notification.

ProductivityCommunication & messaging

Requires authNot measured5 / 22Not checked yet
AgentRender

URL to screenshot, PDF, or extract for AI agents. Free 150 renders/mo, then $17/mo.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
AhaSend

Send email, check deliverability, set up domains, and run templates, contacts and campaigns.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured5 / 22
Ahsuite

Build and run client portals for your agency: pages, tasks, forms, file requests and messages.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured5 / 22
AI Inbx Inbox

Give Claude, Cursor or any agent its own email address: send, read and reply in threads.

ProductivityCommunication & messaging

Requires authNot measured5 / 22
ai·rete·rag

Author rules from policy docs, then decide: a Rete engine gives the verdict, an LLM explains why.

Developer ToolsAI / LLM tooling

Requires authNot measured5 / 22Not checked yet
aictrl

Project context, backlog tasks, and controlled workflows for coding agents. OAuth sign-in.

Developer ToolsAutomation & workflows

Requires authOutdated checkNot measured5 / 22
Aimgod

Calm day planner: tasks, habits, goals and focus, planned by your AI.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured5 / 22
AIPayGen Site Intel

Website and company intel for agents: DNS, WHOIS, SSL, tech stack, email security, profiles

Developer ToolsCommunication & messaging

Requires authNot measured5 / 22Not checked yet
Aldine

Self-hosted collaborative LaTeX editor: read and edit files, typeset, get the errors and the PDF.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22

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