OpenTofu v1.13 includes early linting work

Introduced 2026-09-30 · score 0.95

HOW TO USE IT

When applying built-in lint checks to a configuration, run `tofu validate -lint=all` from its directory. Linting is experimental, and findings appear as warnings.

WHY THIS HELPS

Apply built-in linting checks to an OpenTofu configuration.

REQUIREMENTS AND LIMITATIONS

• Version: v1.13
• Availability: Experiment
• -lint=all: Opts in to linting; accepts a comma-separated list of rule or group identifiers. `all` selects all rules. Identifiers are case-sensitive; unknown identifiers are ignored.
• Prerequisite: Use OpenTofu v1.13 or later; the documented core lint rules are marked as introduced in v1.13.
• Prerequisite: `tofu validate` requires an initialized working directory with referenced plugins and modules installed. Initialize without accessing the configured backend with `tofu init -backend=false`.
• Prerequisite: Linting is experimental and opt-in; detected issues are shown as warning diagnostics.
• The release describes the linting work as very early.

FIRST-PARTY EVIDENCE

• https://github.com/opentofu/opentofu/releases/tag/v1.13.0
• https://opentofu.org/docs/v1.13/cli/commands/validate/
• https://opentofu.org/docs/v1.13/language/linting/

Check the installed version and the source before using it. Entry JSON

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