Snapshot
Continue to About ↓- What it does
- Composer is a browser-based, real-time multiplayer markdown editor where people and AI agents edit the same document side by side.
More detail
- An agent connects over MCP (Model Context Protocol) and writes markdown into a shared document that teammates can edit, comment on, and suggest changes to live.
- Best for
- Small teams that edit markdown together and want their own AI agent's output (plans, specs, docs) to land in a shared live document instead of screenshots, chat, or commits.
More detail
- Also fits teams that want bring-your-own-agent with shared context and plain-markdown portability.
- Pricing
- Free plan costs $0: up to 7 private documents, up to 3 collaborators per private document, 10 MB upload limit, and unlimited public documents and collaborators.
More detail
- Pro is $7.99 per user per month, or $5.99 per user per month billed annually at $71.88 per year, and removes the private-document and colla
- Main limitation
- Teams that need a desktop app, local-file sync, a documented markdown flavor, publishing workflows, or mature version history and provenance tracking today.
More detail
- Teams with many private documents will also hit the free-tier caps.
- Record
- Living and monitored
- Reviewed
- Evidence
- Public web research
- Machine access
- Structured profile ↗
About
- Composer is a browser-based, real-time multiplayer markdown editor where people and AI agents edit the same document side by side.
- An agent connects over MCP (Model Context Protocol) and writes markdown into a shared document that teammates can edit, comment on, and suggest changes to live.
What it helps with
- Agent output is hard to shape with a team: people copy it into shared spaces, send screenshots, commit to repos, or disc
- No straightforward way today for people and agents to work on the same document in real time.
- Agent-written markdown lacks a shared place where teammates can comment and suggest edits live.
- Shared documents can drift out of plain-markdown portability when collaboration tools use proprietary formats.
Capabilities
A practical view of what is available and where limitations apply.
| Offering | Available | Detail |
|---|---|---|
| Real-time multiplayer editing | Yes | Multiple humans and agents edit one document together in real time. |
| Agent collaboration over MCP | Yes | Agents read from and write to the shared document over the Model Context Protocol. |
| Bring-your-own-agent (BYOA) | Yes | Your chosen agent joins with your context rather than a Composer-supplied agent. |
| Comments and suggestions | Yes | Teammates leave comments and suggestions on content; agents can reply to comments and post suggestions. |
| Plain markdown storage | Yes | Documents stay readable in other editors. |
| Access controls for people and agents | Yes | Stated by the co-founder; access controls apply to both people and agents. |
| Concurrent-edit merging (CRDT) | Yes | CRDT data structures merge concurrent edits from humans and agents. |
| Uploads | Limited | 10 MB upload limit on the free plan. |
| Document versioning | No | Roadmap item, not shipped; history currently relies on CRDT undo stacks. |
| Provenance / source-trail tracking | No | Not shipped; described by the maker as top of mind. |
Bot trust
How confidently AI systems can verify this profile from public evidence.
—of 100
ChatGPT—/100
Claude—/100
This profile has not completed a Bot Score assessment yet.
Evidence
Where this record came from, when it was reviewed, and how confidently it can be used.
- Verification
- Scribble researched these facts from the linked public sources.
- The owner has not manually confirmed every field.
- Last reviewed
- Primary source
- usecomposer.md
Technical profile details
Record ID
66fda11d-aa35-4083-9de7-b285672d9620Canonical URLhttps://profiles.scribble.network/listing/composer-66fda11d