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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2946 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-Ops

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

ProductivityCommunication & messaging

Requires authNot measured4 / 22
email-validation.org email validation

Validate emails and run bulk jobs: status, reason and action for each address. Unknown is free.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Emailchaser

Run cold email outbound from an AI agent: campaigns, leads, replies, sender accounts, autopilot.

Marketing & SalesCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Emaillistchecker.io Email Verification

Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
EmailOctopus MCP Server and API by Cotlet

EmailOctopus email newsletter marketing MCP server: list campaigns, get campaign report.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Enhanciar — company brain

Ask your company's Slack, Gmail, Drive, Notion, Jira and code from any MCP client, with sources.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
Envloped

Send transactional email, verify domains, build contact segments, and draft marketing campaigns.

Marketing & SalesCommunication & messaging

Requires authOutdated checkNot measured4 / 22
Ephemeral

Run AI agent tasks in isolated sandboxes with a cost cap, saved workflows and scoped connections.

Developer ToolsAutomation & workflows

Requires authNot measured4 / 22Not checked yet
Errandkit Data Tools

Spreadsheet, census tract, PDF-to-Markdown, SEO/AI audit and video frame tools for agents, on Apify.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
Errandkit PDF to Markdown, Tables & RAG Chunks

PDF, DOCX and scans to Markdown, CSV tables and RAG chunks with OCR. Runs on Apify.

Developer ToolsFile & docs

Requires authNot measured4 / 22Not checked yet
Errandkit Spreadsheet Doctor

Clean, dedupe, join and reconcile CSV/Excel files. Runs on Apify, pay per use.

ProductivityFile & docs

Requires authNot measured4 / 22Not checked yet
Eureka EHR

The Eureka EHR as MCP tools: patients, schedule, notes, messages, billing, and orders.

HealthcarePayments & trading

Requires authNot measured4 / 22Not checked yet
Eusend

Send transactional email and manage domains, audiences, and broadcasts from any MCP client.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
fabricatedemail

Disposable email addresses for tests and agents: register, wait for mail, extract codes and links.

ProductivityCommunication & messaging

Requires authNot measured4 / 22Not checked yet
FactScan AI

OCR and document understanding: extract text from images, then summarize or translate it.

MediaFile & docs

Requires authNot measured4 / 22
FapperAI

Chat with adult (18+) AI companions that remember you, send photos and voice notes and run your toy.

MediaAI / LLM tooling

Requires authNot measured4 / 22
FastFormat

Formata trabalhos acadêmicos em ABNT, com referências e PDF.

Developer ToolsFile & docs

Requires authNot measured4 / 22
Fathom MCP Server and API by Cotlet

Fathom AI meeting notes MCP server: list calls, complete action item, add action item, share call.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
favowe

search, read and organize your favowe bookmarks: boards, links, tags, notes and documents

ProductivityFile & docs

Requires authNot measured4 / 22
FeedbackThread

Triage app feedback and store reviews, draft replies and release notes, tell reporters what shipped.

ProductivityFile & docs

Requires authNot measured4 / 22
FeedSquad

Schedule and publish to LinkedIn, X, and Threads from your AI. Content calendar, approval-first.

ProductivityFile & docs

Requires authNot measured4 / 22
Fezola

Shared Memory, mail, chat, Calendar, Notion and ad accounts (Google, Microsoft, OpenAI) in one MCP.

ProductivityFile & docs

Requires authOutdated checkNot measured4 / 22
FinCraftly

AI employees that run your CRM, invoicing, email, documents, dashboards and agents

Data & AnalyticsCommunication & messaging

Not measuredNot measured4 / 22
Findymail MCP Server and API by Cotlet

Findymail B2B email finder MCP server: find email, verify email, start lead search.

ProductivityCommunication & messaging

Requires authOutdated checkNot measured4 / 22

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