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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2929 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
com.sendpageapp/sendpage

Publish an HTML document as a link anyone can open in one tap, plus PDF, image and Word export.

MediaFile & docs

Requires authNot measured5 / 22Not checked yet
com.sendseven/messaging

Unified messaging MCP server: WhatsApp, Instagram, Telegram, SMS, Messenger & email support inbox

ProductivityCommunication & messaging

Requires authNot measured5 / 22
com.superagnt/email-finder

superagnt: marketing plugin for Claude and ChatGPT. Find your customers: email finder and verifier.

Marketing & SalesCommunication & messaging

Requires authNot measured5 / 22
com.vibsync/vibsync

One shared brain for your AI coding agents: team memory, agent Q&A, tasks, and file claims.

Developer ToolsKnowledge & memory

Requires authNot measured5 / 22
dev.mailkite/agent-mail

Give an AI agent its own inbox — receive email as a webhook, send over a verified domain.

ProductivityCommunication & messaging

Requires authNot measured5 / 22
dev.mailkite/email-agent

Email for AI agents — send, receive as a webhook, manage domains, templates, routing.

ProductivityCommunication & messaging

Requires authNot measured5 / 22
dev.mailkite/inbound-email

Turn inbound email into a webhook — verify, parse, route, and store incoming messages.

ProductivityCommunication & messaging

Requires authNot measured5 / 22
dev.mailkite/mail-receive

Receive inbound email as clean JSON — manage domains, routes, and webhooks. MailKite.

ProductivityCommunication & messaging

Requires authNot measured5 / 22
dev.mailkite/mail-send

Send transactional email over a verified domain — templates, attachments, custom headers.

ProductivityCommunication & messaging

Requires authNot measured5 / 22
dev.pdfops/pdfops-mcp

PDF tools for AI agents: inspect, fill, merge, split, rotate, watermark, protect and invoice PDFs.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
dev.snaplab/snaplab

Screenshot, PDF and HTML-to-image rendering API so Claude and Cursor can see any web page.

MediaFile & docs

Requires authNot measured5 / 22Not checked yet
io.github.AceDataCloud/mcp-acedatacloud

Manage your AceData Cloud account: services, pricing, APIs, docs, balance, usage, keys & orders

Developer ToolsCode & DevOps

Requires authNot measured5 / 22
io.github.adamperlis/walkie-mcp

Search and read your recorded meetings: notes, action items, participants, transcripts.

ProductivityCode & DevOps

Requires authNot measured5 / 22
io.github.altyaper/changologs-mcp

Create, search, and list Changologs logs and tasks

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured5 / 22
io.github.aymandakir-gh/piu-copy-mcp

GrowthHackers copywriting prompts (Meta/Google Ads, email, VSL) as MCP tools — search & generate.

Marketing & SalesCommunication & messaging

Requires authNot measured5 / 22
io.github.codellyson/passalong

Hand tasks, bugs and finished work to AI coding agents, and get back a write-up with evidence.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22
io.github.dodopok/estevao-mcp

Anglican liturgical calendar, lectionary and Daily Office (Book of Common Prayer) via Estêvão API

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured5 / 22
io.github.entire-vc/evc-mesh-mcp

Tasks, comments, shared memory and handoffs for teams of people and AI agents, over MCP.

Developer ToolsCode & DevOps

Requires authNot measured5 / 22Not checked yet
io.github.freeappstore-online/mcp

AI agent tools for FreeAppStore: deploy status, SDK docs, app info, platform guide.

Developer ToolsCode & DevOps

Requires authOutdated checkNot measured5 / 22
io.github.grazy88/midwest-legal-docs

Legal-form catalog, search, and checkout for AI agents. Document prep only; not a law firm.

LegalPayments & trading

Requires authOutdated checkNot measured5 / 22
io.github.handinloop/handinloop-mcp-server

Human-in-the-loop document extraction: submit a doc, get validated fields and an audit trail.

Developer ToolsFile & docs

Requires authNot measured5 / 22Not checked yet
io.github.hoornet/agentdocs-mcp

AgentDocs (agentdocs.eu) MCP: read, search, write, comment, share & attach images to Markdown docs.

MediaFile & docs

Requires authNot measured5 / 22Not checked yet
io.github.invoicepdfs/mcp

Render invoices and credit notes as PDFs, and check them against EN 16931 e-invoicing rules.

Finance & CryptoPayments & trading

Requires authNot measured5 / 22Not checked yet
io.github.IsaiahDupree/calendar-bridge

Connects ChatGPT to your Apple Calendar via a local Mac agent + Vercel relay

Developer ToolsCode & DevOps

Requires authNot measured5 / 22

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