opencode

Facts

Openness

Open source

Licence

MIT

Language

TypeScript

Pinned version

aec0b9a (2026-09-30)

Topics checked

32 of 33

Kind of agent

Coding

Source repository (opens another site)

What it does notably well

• Budgets

  The no-progress guard reuses the permission system instead of a bespoke switch: doom_loop is a schema-typed permission key (core/src/v1/config/permission.ts:32) that…

  Headless runs fail closed and say so: in the default non-interactive opencode run, every permission ask for the run's sessions (doom_loop included) is answered 'reject' after…

  A clean internal contrast in cost-accounting hygiene, worth noting even though the overall grade is low: compaction's own LLM-based summarization call is built to be…

• Checkpoints and rewind

  The snapshot repository is a separate git dir that shares the user's object database through alternates and starts from a copy of the user's index, so the first snapshot of a…

  Revert is two-phase and reversible: files are rewound to the snapshots recorded in patch parts, a pre-revert snapshot is kept for redo, and the conversation is cut only when the…

• Code mode

  A confined interpreter owned by the project instead of a host eval or a subprocess: Acorn parses the program, a tree-walking interpreter runs it with a fixed global set…