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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2873 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
Email Address Check (syntax, MX, disposable, SPF/DMARC)

Check email addresses for syntax, MX and disposable domains. $0.0015/call via x402.

Developer ToolsCommunication & messaging

Outdated check171 ms14 / 22
Veeqo MCP by usefulapi

Read Veeqo orders, products, stock, warehouses, customers and POs; add notes, tag, set stock.

Finance & CryptoPayments & trading

Outdated check174 ms14 / 22
Tax Numbers

Get the US federal tax numbers right, with the IRS document each one comes from.

GovernmentFile & docs

Outdated check184 ms14 / 22
Street.co.uk MCP by usefulapi

Read Street.co.uk properties, applicants, viewings, tenancies, jobs; create enquiries, notes, tasks.

ProductivityFile & docs

Outdated check184 ms14 / 22
SwarmMemo

Talk with agent swarms: rooms, private messages and paid tasks for AI agents

Developer ToolsCode & DevOps

Outdated check187 ms14 / 22
Docmint

PDF and image tools for AI agents: compress, merge, split, OCR, sign. Runs locally, never uploads.

MediaCode & DevOps

Outdated check187 ms14 / 22
dokumendiregister.ee — Estonian public-authority documents

Estonian public-authority document registers: one search across all, docs linked to companies.

Developer ToolsFile & docs

Outdated check197 ms14 / 22
Clueso

Make videos and docs with your AI agent — describe what you need, every output stays editable.

MediaAI / LLM tooling

Outdated check198 ms14 / 22
Hail

Phone, SMS and email for AI agents. One remote MCP endpoint, OAuth login, zero install.

ProductivityCommunication & messaging

Outdated check199 ms14 / 22
AILANG Parse

Parse, convert and create Office and PDF documents. OAuth at /mcp/connect/, API key at /mcp/.

Developer ToolsFile & docs

Responded202 ms14 / 22
Akute Health MCP by usefulapi

Read Akute Health patients, appointments, tasks, notes, medications, allergies and observations.

HealthcareData access / search

Responded204 ms14 / 22
BEACON Commons

Discover tasks and reproducible results. Public reading; invited, host-approved contributions.

Developer ToolsCode & DevOps

Outdated check204 ms14 / 22
AdminPulse MCP by usefulapi

Read relations, invoices, tasks and documents; create tasks and log interactions in AdminPulse.

Finance & CryptoPayments & trading

Responded208 ms14 / 22
Printwren: HTML to PDF and URL to PDF (real Chrome)

Printwren: web page or HTML to PDF with real Chrome; pages, base64 or download link. Free, no key.

Developer ToolsCode & DevOps

Outdated check210 ms14 / 22
Bloomerang MCP by usefulapi

Search Bloomerang constituents and donations; log interactions, notes and tasks.

ProductivityData access / search

Responded211 ms14 / 22
Palmyr

Agent infra: email, phone, social, domains, VPS, wallets. Paid per-action via x402, no API key.

Finance & CryptoPayments & trading

Outdated check212 ms14 / 22
Nasaq UI

Nasaq design system docs for agents: 390 components for React, Vue, Blade and HTML, with Arabic RTL.

Developer ToolsCode & DevOps

Outdated check214 ms14 / 22
app.onehaus/haus

OneHaus household tools: tasks, calendar, contacts, pets, vehicles, documents and more.

ProductivityFile & docs

Outdated check225 ms14 / 22
Stabledrop escrow payments

Stablecoin escrow payments the buyer can dispute, with a signed receipt. Pay a wallet or an email.

Finance & CryptoPayments & trading

Outdated check233 ms14 / 22
GenPPT

Generate AI slide decks and export native PowerPoint (.pptx) and PDF presentations from chat.

Developer ToolsFile & docs

Outdated check234 ms14 / 22
Lane Planner

Turn a list of interests into a day-by-day plan for 3 to 7 days, with checkbox text for a todo app.

ProductivityFile & docs

Outdated check236 ms14 / 22
Follow Up Boss MCP by usefulapi

Search Follow Up Boss leads, review calls and deals, and add notes, tasks and deal updates.

Marketing & SalesData access / search

Responded238 ms14 / 22
NuvUI

The docs, rules, blocks, charts and design tokens of nuvui, a React UI library, for coding agents.

Developer ToolsCode & DevOps

Outdated check241 ms14 / 22
Témoin public

Prove a web page or document existed on a date: public SHA-256 registry anchored in Bitcoin. Free.

Finance & CryptoPayments & trading

Outdated check245 ms14 / 22

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