Built for the agent era
Works with Claude, Cowork & any MCP client

Built for agent-era marketers,
loved by campaign builders.

The visual canvas where your AI agent builds campaigns — research, personas, emails, results — as structured cards on one persistent board.

10+
Typed card shapes — Audience, Insight, Email, Result & more — structured for agents, readable for humans.
0ms
Lock-in. Card bodies are plain markdown. Export is a folder of .md files.
∞
Infinite canvas. Zoom, pan, drag, connect. Your campaign as one continuous artifact.
Connects via MCP

Run your campaign without the scroll-and-lose chaos.

Close the tab. Come back next week. The canvas remembers. So does the agent.

Typed cards on an infinite canvas

Ten first-class card shapes — Audience, Insight, Email, Result — each a markdown doc with metadata. Machines reason over the structure; you read the markdown.

Read more

Bring your own agent via MCP

Connect Claude, Cowork, ChatGPT — any MCP-compatible client. The agent writes cards while you chat. Plainpaper never wraps or resells an LLM.

Read more

Phases that are first-class, not metadata

Rename "Creation" to "Copywriting + Design." Add "Localization" mid-campaign. The agent can restructure phases on request — you approve, it applies.

Read more

Connections, not free-floating notes

Every card can link to others — informs, produces, targets, measured by. Your agent reads the graph. You see lineage from research to result.

Read more

Approval layer between idea and send

When the agent proposes pushing an email to ActiveCampaign, you see it on the canvas first — with the lineage that shaped it. Approve, adjust, or reject.

Read more

Markdown on disk, WYSIWYG on screen

Card bodies are plain markdown. Edit with formatting, export as .md files, hand to any LLM. No proprietary baggage, no lock-in.

Read more
Black Friday — skincare
Done
Draft
Done
Draft
Done

Grow faster without adding extra work.

Talk to your agent the way you already do. Every output lands on the canvas — organized, typed, connected. Close the chat, open it a week later, and the agent picks up with full context.

  • Watch your campaign take shape in real time
  • Human and agent share one source of truth
  • Approve before anything ships to your ESP
Book a demo

One canvas for every campaign you run.

No more Notion pages, Google Docs, Slack threads, and spreadsheets impersonating a campaign system. Plainpaper is the artifact — research to strategy to copy to results, with lineage intact.

  • Every tool connects to the agent via its own MCP
  • Plainpaper is context & memory — not plumbing
  • Workspace-priced, so you invite the whole team
See pricing
Integrations · via MCP
AC⋮
MC⋮
KL⋮
GA⋮

More context, more lineage, more approved sends.

Audience
Eco-conscious women, 25–34
Insight
Rivals lean on scarcity
Plan
Q4 'Clean edit' campaign
Email
Subject: Routine, reimagined
Social
Launch post — clean edit
Result
42.7% open · 6.1% CTR
Why it matters

Get started in three moves.

Connect MCP
Sign in
Open canvas

Step 1. Connect & sign in

Connect your Claude, Cowork, or ChatGPT client to the Plainpaper MCP server. One URL, two minutes. No CSVs, no SDKs.

Step 2. Give direction

Tell your agent what you're running. It researches, drafts personas, writes emails — each output lands as a typed card on the canvas in real time.

A/B Winner
+27% lift

Step 3. Steer & ship

Rearrange, edit, approve. Tell the agent to push to your ESP — it reads the card, calls their MCP, comes back with results as a new card.

Why Plainpaper wins over generic whiteboards and AI writers.

Plainpaper
Miro · Jasper · Notion
Structured card types for marketing
Audience, Insight, Email, Result — each typed, colored, connectable. Not sticky notes.
✓
✕
Agent writes to the canvas in real time
Your MCP-connected agent drops research, drafts, and results straight onto the board — no copy-paste.
✓
Partial
Bring your own AI — any MCP client
Claude, Cowork, ChatGPT, whatever comes next. No walled-garden model, no LLM margin.
✓
✕
Typed connections between cards
Informs, produces, targets — machine-readable edges, visible lineage on-screen.
✓
Partial
Persistent memory outside the chat
Close Claude. Come back in a week. The canvas is intact — and the agent rehydrates from it.
✓
✕
Human approval before anything ships
Agent proposes, canvas shows lineage, you approve. Then — and only then — it calls your ESP.
✓
✕

Early operators on life with a canvas agent.

Amira R.
Growth, D2C skincare

"We used to run campaigns across four docs and a Slack thread. Now the agent puts everything on the same board — and it's the first time the why behind every email is written down somewhere my team can actually read."

6.4h
saved per campaign
3×
more context on reopen
Daan v.
Founder, technical agency

"I run seven client campaigns out of Claude Desktop. Plainpaper is finally the place where all of that work is visible — to me, to my team, to the client. One workspace per client. The canvas is the deliverable."

7ws
client workspaces live
0
shared Notion pages left
Priya S.
Marketing ops, SaaS

"The approval layer sold me. The agent proposes — I see the email, the persona it targets, the insight that informed it, and the segment it'll hit — and then it ships. No more 'wait, why did we write it that way?'"

100%
lineage coverage
2×
faster approvals

Priced per workspace, not per seat.

Invite your whole team. Agencies — one workspace per client. Free to start, no credit card.

Free
$0/mo

1 workspace, 3 boards, 50 cards, 1 editor. Enough to build one real campaign and feel the value.

Start free
Most popular
Starter
$29/mo · workspace

Unlimited boards & cards, up to 3 editors, unlimited viewers, version history.

Start Starter
Team
$79/mo · workspace

Up to 10 editors, shared template library, workspace analytics, priority support.

Choose Team
Business
$149/mo · workspace

Up to 25 editors, SSO, audit trail, custom card types, API access, advanced permissions.

Choose Business

Need more? Enterprise — unlimited editors, dedicated infra, SLAs, custom MCP configurations.

  • Plainpaper is the visual control center for AI-powered marketing campaigns. It's the canvas where your AI agent builds a campaign — research, personas, emails, results — as structured, typed cards on one persistent board. Outside the chat, always readable, always editable.

  • No. Plainpaper is not an AI provider. You bring your own agent via MCP — Claude.ai, Claude Desktop, Cowork, ChatGPT, or any other MCP-compatible client. Plainpaper is the durable workspace those chats feed into.

  • It doesn't, directly. Your tools connect to the agent via their own native MCP servers. Plainpaper is the context and memory layer — not the integration layer. When your agent pushes an email to ActiveCampaign, it calls ActiveCampaign's MCP; Plainpaper is where the rationale lives.

  • Card bodies are plain markdown on disk. Export your workspace and you get a tree of .md files plus a JSON manifest with card metadata and connections. No proprietary format, no goodbye tax.

  • Yes — 1 workspace, 3 boards, 50 cards, 1 editor. Generous enough to build one real campaign end-to-end and feel the value before you decide to pay.

  • For the canvas itself, no — it's drag, click, type. To connect your agent via MCP, you need a one-time setup in Claude Desktop or Cowork that's about as complex as adding a browser extension. We'll walk you through it.

Ready to make your agent's work visible?

Join the marketers using Plainpaper to turn ephemeral AI chats into one durable, approvable campaign artifact.

Get early access