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saga

Use when a user runs saga or asks to autonomously build a sizable feature. Not for executing a given plan: use subagent-driven.

.devin/skills/saga/SKILL.md

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Sep 28, 2026
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Apache-2.0

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# Saga

## Contract

| Field | Bound contract |
|---|---|
| Trigger | User runs saga or asks to autonomously build a sizable feature. |
| Authority | Reversible local: writes specs and progress artifacts to the saga directory under `~/.sagas/` (rollback is deleting them) and worker artifacts in isolated git worktrees (rollback is version control). No remote mutation except a human-approved branch push or draft PR for remote-worker handoff. Validates each task to its criteria before integration; milestone-level validation gates progression; user acceptance is the terminal gate before integration to the target branch. |
| Side effect | Creates a saga directory outside the repo and spawns workers in isolated git worktrees. |
| Done | All tasks meet validation, milestones pass, user accepts. |

## Inputs

- Feature request (user-provided prompt or description).