Guides
Choose the harness and workflow before the model
Tool design, context assembly, permissions, and retries shape agent behavior.
A concise editorial guide, not a universal recommendation or guarantee.
Decision rule
Write down the job: repository editing, research, delegation, or unattended batches. Then test the harness permissions, diffs, recovery, and model-provider support. The same model can behave differently because harnesses build prompts and tool loops differently.
Practical checklist
- Test recovery from a failed tool call.
- Review permissions before unattended work.
Sources checked
These first-party or authoritative sources ground the note. Checked 2026-08-16.