An open-source Jasper alternative that already knows your product
Jasper asks you to teach it your brand and product. Tin runs on the coding agent that already has your repository open, and drafts from that knowledge in a voice captured from your own writing.
codex mcp add tin --url https://app.tin.computer/mcpWhat Tin does in place of Jasper
Jasper is an AI content platform for marketing teams, with brand voice, templates and campaign workflows across many content types.
| the job | how Tin does it | workflow |
|---|---|---|
| Brand voice | An editable voice guide from samples you choose. | style.capture → |
| Blog drafts | Planned articles drafted after a coverage check. | content.generate → |
| Thought leadership | Rigorous public articles from project evidence. | content.public_article → |
What Tin does not replace
Tin is not a clone. Here is where each one fits.
Jasper still does this better
- Short-form templates for ads, social posts and product descriptions.
- A shared workspace for a marketing team.
Choose Tin when
Your content is technical or product-specific and accuracy is the hard part.
Stay with Jasper when
A marketing team needs many formats of copy at volume.
What every workflow here comes with
Battle tested on real products
These are the workflows we run for real companies. Claw Messenger went from about $45 to $2,105 in monthly revenue in 124 days on them. Each one has declared inputs, bounded execution and tests, and anything public waits for your review.
See the case study →Open source: read it, fork it, self-host it
Apache 2.0. Every workflow is a folder in the repository: the steps it runs, the data it reads and what it is allowed to do. Change it, or run the whole system on your own machine.
Open the repo →Runs on the agent that already knows your product
Tin connects to Claude Code, Codex or Cursor over MCP. That agent has your repository open and knows your product, customers and voice, so it fills the inputs and reviews the output. You never brief a new tool from zero.
All workflows →The workflows behind this page
Each one is a folder in the repo. Open a page for its steps, inputs and output.
Questions
Does Tin write social posts and ad copy?
Not as shipped workflows today. Social posts and ad creative are planned in the catalogue.
Is Tin really open source?
Yes. Tin is licensed under Apache 2.0 and the source is at github.com/tin-computer/tin. You can read every workflow, change it, and self-host the whole system.
Which coding agents can run Tin workflows?
Any agent that speaks MCP, including Claude Code, Codex and Cursor. There is also an API, and the same projects run in the browser at app.tin.computer.
Why run marketing from a coding agent?
Because it already knows your product. It has the repository open, so it fills workflow inputs accurately, reviews output against what the product really does, and can act on the results in the same session.