{
  "id": "terraform-engine-compatibility",
  "name": "terraform-engine-compatibility",
  "version": "0.1.0",
  "type": "skill",
  "provider": "terraform",
  "harnesses": [
    "codex",
    "claude-code",
    "cursor",
    "gemini",
    "kiro",
    "other"
  ],
  "summary": "Decide whether a version or engine change is safe to adopt, in what order, and with what rollback: Terraform core and provider major upgrades, deprecation exposure, and the Terraform-versus-OpenTofu engine decision treated as an evidence problem rather than an ideological one. Reads version constraints, lock files, deprecation notices, and release documentation only.",
  "source_type": "original",
  "official_docs": [
    "https://developer.hashicorp.com/terraform/language/upgrade-guides",
    "https://developer.hashicorp.com/terraform/language/v1-compatibility-promises",
    "https://developer.hashicorp.com/terraform/language/files/dependency-lock",
    "https://opentofu.org/docs/intro/migration/",
    "https://opentofu.org/docs/intro/",
    "https://opentofu.org/docs/intro/migration/multiple-configurations",
    "https://developer.hashicorp.com/terraform/plugin/terraform-plugin-protocol"
  ],
  "security_notes": "Static review only — reads version constraints, `.terraform.lock.hcl`, provider deprecation notices, changelog and upgrade-guide excerpts, and configuration; never runs `init`, `init -upgrade`, `plan`, or `apply`, and never contacts a registry. Never requests or accepts credentials, tokens, or licence keys. Version-specific behaviour is asserted only from the relevant engine's own upgrade guidance for the exact version pair in question; a claim about a version whose guidance was not read is labelled unknown rather than inferred from an adjacent version.",
  "last_verified": "2026-08-17",
  "path": "skills/terraform/terraform-engine-compatibility",
  "author": "github: VincentChuWaiChow"
}