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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2945 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
Document to Markdown for LLM & RAG

PDF, Word, PowerPoint and scans to Markdown or RAG chunks, via the Apify actor

Developer ToolsFile & docs

Requires authNot measured4 / 22Not checked yet
DoLoop

Recurring tasks in loops. Your assistant reads today's tasks, checks or skips them, edits loops.

OtherOther

Requires authNot measured4 / 22Not checked yet
Domailo

Read, search, draft, send and schedule email in your company-domain mailboxes on Domailo.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
DomainCat

Monitor SSL certs (incl. origin behind Cloudflare), domain expiry, DNS, email auth and blacklists.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
DomainDNA

Tech stack, email security (SPF, DMARC, MX provider) and domain age API + MCP. 25 free domains/day.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
DomainRef - domain and email security check

Pay-per-call domain and email security check: SPF, DKIM, DMARC, TLS, DNSSEC, BIMI, with exact fixes.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
DomainSpace

Register .si domains, manage DNS, and give your AI agent an email inbox on your own domain.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
DontMynd

Calm weekly planner. Let Claude or ChatGPT manage your This Week, Next Week and Backlog tasks.

OtherAI / LLM tooling

Requires authNot measured4 / 22
Dotpad

Shared space for agents and humans: hubs of live pads, threads and tasks any agent can join.

Developer ToolsCode & DevOps

Requires authNot measured4 / 22
Dovemails

Email inboxes for AI agents: send, wait for mail, reply in thread, forward and label.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Dowit

Work planner for freelancers: calendar, tasks, projects, time tracking and client reports.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
Drafto

Create, read, search, and organize your Drafto notes and notebooks.

ProductivityData access / search

Requires authNot measured4 / 22Not checked yet
DropMail

Disposable temporary email: create inboxes, wait for and read incoming mail. No account needed.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Dunjn

Tabletop RPG campaign wiki for game masters: NPCs, places, sessions, encounters, notes, roll tables

Marketing & SalesKnowledge & memory

Requires authOutdated checkNot measured4 / 22
Dynamic Document API

PDFs, images and e-invoices (XRechnung, ZUGFeRD) from templates and JSON, rendered in the EU.

Finance & CryptoPayments & trading

Requires authNot measured4 / 22
Dynjandi

Manage a Dynjandi image workspace, build variant URLs and read the docs, with a workspace API key.

MediaAI / LLM tooling

Requires authNot measured4 / 22Not checked yet
Easy Email Verification

Verify email addresses before you send: single, batch (50) and bulk lists (10,000).

ProductivityCommunication & messaging

Requires authNot measured4 / 22
easySales

Sales and billing for small businesses: leads, quotations, invoices, receipts and credit notes.

Finance & CryptoPayments & trading

Requires authOutdated checkNot measured4 / 22
Ecomhint

Ecommerce store audits: read findings with evidence and fix steps, track tasks, run new audits.

E-commerceData access / search

Requires authNot measured4 / 22
eGile

eGile kanban board for AI agents: a card per task, take teammates' tasks, move cards as you work.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured4 / 22
Election Index

Neutral, sourced election calendar: polling days, when provisional and final results are due.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
Email Got Simplified

Read, search and draft email; nothing is sent until you confirm.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Email Parser Got Simplified

Clean up an email: strip signatures and quoted replies, and summarize what is left.

ProductivityCommunication & messaging

Requires authNot measured4 / 22
Email-Ops

Mailbox threads; drafts wait for a person. Authenticated; OAuth 2.1 via Keycloak.

ProductivityCommunication & messaging

Requires authNot measured4 / 22

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