Upseam has no model of its own. A fix pull request is written by a model you connect and pay for, or by your own coding agent. Simple fixes need neither.
Choose who writes the fixes
Connect a modelYour key, stored encrypted with Upseam or kept in your GitHub Actions secrets.Simple fixes without a modelA retired model id is replaced with the vendor's named replacement.Bring your own agentClaude Code, Codex, OpenCode, Hermes Agent or OpenClaw write the fixes in your Actions.Set up with a coding agentOne line for your coding agent prepares the repository and asks before changing anything.
#Before you connect anything
Until a model or an agent is connected, Upseam writes no fixes except simple fixes. It still lists what it would fix in the dashboard issue. See Without a model.
#What the model sees
The model receives only the change data and the files with matches, and answers with whole files. Deterministic gates check the answer before anything is pushed. See the security model.