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

2922 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
Multi Calendar

Outlook.com, Microsoft 365, Google, iCloud, CalDAV: free time, events, invites, bookings, polls.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured6 / 22
Naumu

Search, extend, and act on your team's Naumu knowledge graph: notes, threads, and nodes.

ProductivityData access / search

Requires authNot measured6 / 22
note1

Meeting notes, transcripts, action items with linked tickets, integrations and recordings.

ProductivityFile & docs

Requires authNot measured6 / 22
OmniSignal

Live market intelligence & AI content strategy: trends, competitor moves, content calendar.

ProductivityFile & docs

Requires authNot measured6 / 22Not checked yet
Ontoloop

Team agent collaboration: shared team facts, human-confirmed writes, tasks and threads over MCP.

Developer ToolsCode & DevOps

Requires authNot measured6 / 22
Pidgeon

Email inbox and verifiable ID for your agent: addresses, threads, sending and replies.

ProductivityCommunication & messaging

Requires authNot measured6 / 22Not checked yet
Postfleet

Give an AI agent its own email address: send, reply, read, and wait for mail.

ProductivityCommunication & messaging

Requires authNot measured6 / 22Not checked yet
Presentations.AI

Create designed slide decks from a prompt, notes, or an outline, then export them or share a link.

ProductivityFile & docs

Requires authNot measured6 / 22Not checked yet
Whimsical

Create and edit flowcharts, mind maps, wireframes, and docs in Whimsical, or search your workspace.

Developer ToolsData access / search

Requires authOutdated checkNot measured6 / 22
Worktable

A workspace where you and your agents create and revise Docs, HTML tools, drawings, and Records.

Developer ToolsCode & DevOps

Requires authNot measured6 / 22
com.ainetcafe/netcafe-memory

Cross-session, cross-device memory for your agent: remember and recall notes. No key to start.

ProductivityKnowledge & memory

UnreachableNot measured5 / 22
com.skopik/mcp

Your org's AI agents, tasks, runs, search, and brain files as MCP tools and resources.

Developer ToolsData access / search

UnreachableNot measured5 / 22
dev.mailkite/mailkite

Send email, manage domains, DNS, webhooks, templates, and inbound routing on MailKite

ProductivityCommunication & messaging

Requires authNot measured5 / 22
io.github.acrylicfiddle/x402tools

10 pay-per-call tools for AI agents: QR, screenshots, DNS, OCR, PDF, email & more. USDC on Base.

Developer ToolsCommunication & messaging

UnreachableNot measured5 / 22
io.github.anima-labs-ai/anima

Give your AI agent an identity it owns: email inbox, US phone number, SMS, voice, and a vault.

ProductivityCommunication & messaging

UnreachableNot measured5 / 22
io.github.digitalimpresys/rentme-tasks

AI Requests for physical tasks performed by humans registered on Rentme, in exchange for payment.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
io.github.discover-dmc/paygentic

Pay-per-call APIs for AI agents: web scraping, DNS/email checks, classification, trading risk.

Developer ToolsBrowser & web scraping

Outdated checkNot measured5 / 22
io.github.nao1234g/calibration-routing

Route tasks by measured judgment quality: third-party-verified, Brier-based calibration records.

Developer ToolsCode & DevOps

Outdated checkNot measured5 / 22
io.github.paperandbeyond23-gif/propzapi

Render-and-verify API: HTML/CSS to image or PDF, screenshot any URL, confirm the text rendered.

MediaCode & DevOps

UnreachableNot measured5 / 22
io.github.wynnpay102-sys/awc-agent-commons

Discover funded testnet tasks with deterministic on-chain acceptance and AWC utility rewards.

Finance & CryptoCode & DevOps

Outdated checkNot measured5 / 22
io.github.Zuga-luga/zugabot

Paid dev services for AI agents: code review, bug-fix, tests, docs, audits. USDC on Base x402.

Finance & CryptoPayments & trading

Outdated checkNot measured5 / 22
uk.quantdata/quantdata

Four market-statistics tools + a free qd_ key by email: 1 anonymous look, then 10 calls/UTC day.

Data & AnalyticsCommunication & messaging

UnreachableNot measured5 / 22
Agent Tools

9 utility tools for agents: DNS, WHOIS, email, IP, URL, headers, QR, text, tech. x402 on Base.

Developer ToolsCommunication & messaging

UnreachableNot measured5 / 22
AgentPay

x402 micropayments MCP: Xiaohongshu notes and paid APIs settled in USDC on Base.

Finance & CryptoPayments & trading

UnreachableNot measured5 / 22

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