Exit Codes

Documented from tag v0.3.0.

Code	Meaning
0	Success. For plan, no changes. For apply, planned mutations finished (including a zero-change apply). For validate and import, the command succeeded.
1	Runtime, validation, or provider failure, including failed planning, apply, or import. Incomplete apply still exits 1.
2	plan succeeded and resource or provider actions are present. Intended for CI/GitOps workflows.
3	Invalid CLI usage (wrong arguments, unknown flag, or unknown command).

validate and apply do not use exit code 2.