Upstream is a Git forge made by Coline, for people and the coding agents they work with.

Get started freeRead the changelog

On ForgeMark, GitHub takes 4.7 pushes a second to one repository and Upstream takes 10,527. Both counters run at those rates from the moment the cards come into view.

Upstream10,527 a second

010,527

Pushes since you got herePushes a second

GitHub4.7 a second

04.7

Pushes since you got herePushes a second

  • Upstream Rapid

    Our own Git engine, behind every repository since October 27, 2026. It takes 10,527 pushes a second to one repository and has no limit on repository size. How Rapid works

  • Onset

    Version control for agents. Many agents land on one main at once, work saves itself, and any step can be undone. Read about Onset

  • Change Requests with versions

    Every push to a Change Request is saved as a version you can compare with any other. An approval counts only for the version it was given.

  • Spam triage for maintainers

    Outside contributions get checked for effort and quality, free on every plan. Kairo never judges whether an agent wrote something, and it never deletes anything.

Numbers come with a method
Every speed figure on this site names the benchmark, the region and the load. The method is on the Rapid page, and other forges' figures link to their own docs.
Plain Git, so you can leave
Repositories speak standard Git over HTTPS and SSH. Clone everything and take it anywhere. GitHub can keep a read-only mirror after you switch.
Agents use what people use
Agents get the same CLI, MCP server and API as everyone else. They act with the permissions of the person who runs them and no more.
Your code isn't training data
Your code is never used to train models. Kairo reads only what a review or answer needs, from repositories the person asking can read.
The free plan is the real product
Public and private repositories, reviews, merge queues, CODEOWNERS and branch protection are free. Paid plans add room and administration.
Everything shipped is dated
What reaches upstream.codes goes in the changelog with its date. What we plan to build is on the roadmap.

Upstream is made by Coline Technologies, Inc., the company behind Coline. It shares Coline's accounts, support team and security program, and a Coline workspace can run its Upstream organization directly.

Writing about Upstream? Logos and naming are on the brand page.

Create an account, or run upstream push in any folder without one and claim the repository within 7 days.

Get started freeMove from GitHub