MCP HeartbeatTHE MCP OBSERVATORY
Public workspace

Explore

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

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
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Outdated check210 ms14 / 22
Benchmark Email MCP by usefulapi

Manage Benchmark Email lists and contacts, and read campaign reports: opens, clicks, bounces.

Marketing & SalesCommunication & messaging

Outdated check211 ms14 / 22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Outdated check212 ms14 / 22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Outdated check214 ms14 / 22
DoorLoop MCP by usefulapi

Read DoorLoop properties, units, leases, tenants and payments; create tasks and task updates.

Real Estate & PropertyPayments & trading

Outdated check218 ms14 / 22
CentralStationCRM MCP by usefulapi

Read CentralStationCRM people, companies, deals, tasks; create and update people, companies, deals.

Developer ToolsCode & DevOps

Outdated check219 ms14 / 22
app.onehaus/haus

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

ProductivityFile & docs

Outdated check225 ms14 / 22
Buttondown MCP by usefulapi

Read Buttondown subscribers, emails, analytics and automations; add subscribers; write email drafts.

Data & AnalyticsAutomation & workflows

Outdated check225 ms14 / 22
Gripp MCP by usefulapi

Read projects, invoices, hours and contacts; register hours, create tasks in Gripp.

Finance & CryptoPayments & trading

Outdated check226 ms14 / 22
Apilo MCP by usefulapi

Read orders, shipments, products and stock; set order status, notes and stock quantity in Apilo.

Finance & CryptoPayments & trading

Outdated check228 ms14 / 22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
ExpenseIn MCP by usefulapi

Read expenses, invoices, receipts and card transactions, and add expenses or notes in ExpenseIn.

Finance & CryptoPayments & trading

Outdated check238 ms14 / 22
Clio MCP by usefulapi

Read Clio matters, contacts, time, tasks, calendar and bills; add matters, time entries, notes.

ProductivityFile & docs

Outdated check239 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
Contact Details Finder

Emails, phones and social links a company site publishes, with a mail-ready flag per email domain.

ProductivityCommunication & messaging

Outdated check248 ms14 / 22
Hostaway MCP by usefulapi

Manage Hostaway listings, reservations, calendar, guest messages, reviews and tasks.

ProductivityCommunication & messaging

Outdated check251 ms14 / 22
com.applivery.docs/mcp

Search and read the public Applivery docs (MDM & app distribution). Read-only, no auth.

Developer ToolsData access / search

Outdated check259 ms14 / 22
Recruitee MCP by usefulapi

Search Recruitee candidates, jobs, pipelines and interviews, and add notes, tags and tasks.

ProductivityData access / search

Outdated check263 ms14 / 22
RevoGrid DataGrid MCP Pro

Hosted Pro MCP server for RevoGrid DataGrid docs, examples, feature checks, and migration guidance.

Developer ToolsCode & DevOps

Outdated check266 ms14 / 22
FlutterSDK Docs

Search Wind UI, Magic, Dusk, Telescope and Artisan documentation. Hosted, public, no auth.

Developer ToolsFile & docs

Outdated check272 ms14 / 22
DecoNetwork MCP by usefulapi

Read production orders, mark orders produced or shipped, and add internal notes.

ProductivityFile & docs

Outdated check278 ms14 / 22

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