Launch week: free for everyone

Markdown that
thinks with you

The document editor built for humans and AI agents — real-time collaborative markdown with MCP for Cursor, Claude, and ChatGPT.

Named version history and threaded comments. Built for teams that ship, and the agents that help them.

No credit card required30-second setupFree for everyone during launch
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# Sprint Planning

 

## Goals

- Ship MCP server

- Add version history

- Polish editor

 

## Owners

- @alice, backend

- @bob, frontend

Sprint Planning

Goals

  • Ship MCP server
  • Add version history
  • Polish editor

Owners

  • @alice , backend
  • @bob , frontend
alice
3 collaborators · saved
v3 · auto-snapshot 2m ago

Works with every MCP-compatible AI agent

CursorClaude DesktopContinue.devZedWindsurfClineGooseAiderCursorClaude DesktopContinue.devZedWindsurfClineGooseAider

Built for modern teams

Everything you need to collaborate on docs

Markdown, real-time, agent-friendly. Zero compromises.

Real-time collaboration

Yjs CRDTs + Hocuspocus. Multiple cursors, presence avatars, zero merge conflicts, even offline.

AI-native via MCP

24 agentic tools. Cursor, Claude Desktop, and any MCP client work out of the box.

Version history

Auto-snapshots every 5 min, named checkpoints, one-click restore with safety net.

Threaded comments

Inline discussions anchored to text. @mentions and resolve states.

Full markdown fidelity

GFM tables, task lists, code blocks with highlighting, Mermaid diagrams, math.

Bring your files in & out

Drag-and-drop .md files to import. Export any document as Markdown, HTML, or PDF in one click.

Trash + 30-day retention

Soft delete with daily countdown. Restore or purge from a dedicated trash view.

No account needed for bots

Any AI agent can create, update, and share a document. No API key, no signup required.

Fast everywhere

Edge-deployed Vite frontend, Postgres and Redis backend. Sub-second cold starts.

Secure by default

Google SSO, scoped MCP keys, CSP headers, audit logs, rate limiting.

Model Context Protocol

Your docs, available to every AI agent

Plumia ships an MCP server with 24 tools across documents, trash, comments, versions, and sharing. Connect Cursor, Claude Desktop, or any MCP client and your agent can read, write, comment, and version, with the same permissions you have.

  • Generate scoped API keys in one click
  • Stdio + Streamable HTTP transports
  • Account-scoped: agents inherit your access, nothing more
  • No account? Agents can still publish via /agents.md
Works withCursorClaude DesktopContinue.devZedCline
~/.cursor/mcp.json

{

"mcpServers": {

"plumia": {

"url": "https://mcp.plumia.ai/mcp",

"headers": {

"Authorization":Bearer mk_...your key

}

}

}

}

Available tools

24 total

Documents

list_documentscreate_documentupdate_documentappend_to_documentdelete_document

Trash

list_trashrestore_documentpurge_document

Comments

add_commentreply_to_commentresolve_commentlist_comments

Versions

list_versionscreate_versionrestore_versionname_version

Sharing

share_documentset_link_sharinglist_collaboratorsremove_collaborator
Agent-first

Publish from any AI agent

Works in Cursor, Claude, ChatGPT, Gemini, Copilot. No sign-up. No API key. Agents that can POST create instantly; browse-only agents emit one clickable link (one tap).

Agent prompt

Copy
Publish my <topic> to https://plumia.ai/new
Try in ChatGPTCursor / Claude Code — paste onlyAgent details

Replace the ChatGPT link after you publish your Custom GPT (set VITE_CUSTOM_GPT_URL in the web build env). See docs/custom-gpt-setup.md.

  • Create a documentAgent gets a public shareable link instantly
  • Update contentPATCH the doc as many times as needed
  • Add commentsAnyone can leave a note, no login required
  • Share the linkViewers can comment; sign in to clone and edit
Sign in for more:Version historyReal-time collab24 MCP tools

The URL is public and shareable

Anyone with the link can view the document and leave comments with no login. Authenticated users can clone it to their workspace for full editing.

Power-user: HTTP examples, curl, OpenAPI

OpenAPI for Custom GPT Actions: https://api.plumia.ai/openapi-agent-docs.json

Example curl (terminal / Code Interpreter)

curl -sS -X POST "https://api.plumia.ai/new" \
  -H "Content-Type: application/json" \
  -d '{"title":"My document","markdownContent":"# My document\n\nHello from Plumia."}'
POSThttps://api.plumia.ai/newcanonical create

Body

{ "title": "Sprint Plan", "markdownContent": "# Sprint Plan\n\n..." }

Response

{ "data": { "token": "…", "url": "https://plumia.ai/p/…" } }

PATCHhttps://api.plumia.ai/api/agent-docs/<token>update anytime

Body

{ "markdownContent": "# Sprint Plan\n\nUpdated content." }

Response

{ "data": { "url": "https://plumia.ai/p/<token>", "updatedAt": "…" } }

The editor

Source on the left. Preview on the right. Both update live.

A distraction-free Tiptap editor with full markdown fidelity, code blocks with syntax highlighting, tables, task lists, and Mermaid diagrams.

Q3 Roadmap.md
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# Q3 Roadmap

 

## Theme: Agentic-first

 

This quarter we ship the MCP server, version history, and trash recovery. @alice can you review the spec?

 

### Milestones

- [x] MCP server v1

- [x] Trash retention

- [ ] Public launch

Q3 Roadmap

Theme: Agentic-first

This quarter we ship the MCP server, version history, and trash recovery. @alice can you review the spec?

Milestones

  • MCP server v1
  • Trash retention
  • Public launch
A
alice· 2m

On it, drafting now.

@mark ship it
Saved · 3 collaborators
Markdown
  • Live presence

    See who's reading and editing in real time, with named cursors and avatars.

  • Inline comments

    Threaded discussions anchored to the exact text. Resolve when done.

  • @mentions

    Notify collaborators by name with a single keystroke. Inbox and email.

  • Always saved

    Auto-save with a debounced indicator. Auto-snapshots every 5 minutes.

Sprint Plan.md

Document

# Sprint Plan

 

Goals for Q3:

- Ship MCP server

- Add version history

Versions

90-day retention
  • v1 · Initial draft

    edited just now · you

    Current
Every change saved instantly. Snapshots group edits into reviewable versions.

Version history

Roll back without fear

Every change is saved instantly. Auto-snapshots group edits into reviewable versions, plus named manual checkpoints before risky changes. Restore any version with one click. A safety snapshot of the current state is saved automatically.

Loved by writers and agents

Built for the people who ship

From two-person founding teams to engineering orgs replacing legacy wikis.

“Our PMs and engineers finally edit the same spec without a Notion-import dance. The MCP server is the kicker: Cursor writes the changelog now.”
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Avery Chen

Staff Engineer · Cobalt Robotics

“Real-time markdown that round-trips losslessly. Version history is the safety net I always wanted in Google Docs but with proper diffs.”
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Marco Liu

Founder · Switchboard

“We replaced two tools with Plumia. Threaded comments + @mentions feel native, and exporting to PDF for client deliverables is a tap.”
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Sana Ortega

Engineering Lead · Outpost

24
MCP tools shipped
5 min
Auto-snapshot cadence
<150ms
Median collab latency
$0
Free during launch

Pricing

Free for everyone during launch

We’re just shipping. Sign up now and Pro stays free for as long as you stay subscribed.

Free

For solo writers and small teams. Everything you need to get started.

$0forever
Continue with Google
  • Up to 5 documents
  • Up to 2 collaborators per document
  • Real-time collab + comments
  • 30-day version history
  • Import .md · Export to Markdown / HTML / PDF
  • 1 MCP API key
Launch promo

Pro

Unlimited everything while we launch. Locked-in for early adopters as long as you stay subscribed.

Free$10during launch
Claim launch promo
  • Unlimited documents
  • Unlimited collaborators
  • 90-day version history
  • Unlimited MCP API keys
  • Import and export: Markdown, HTML, PDF
  • Priority email support

Pricing applies after launch. Early signups stay on the launch promo as long as their subscription is active.

FAQ

Frequently asked questions

Still have questions? Email us.

Start writing in 30 seconds

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