# Frb Code Generation > Use when modifying Rust API, codegen, or example code in flutter_rust_bridge to determine which generation commands to run - Skill: `tomevault-io/frb-code-generation` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/frb-code-generation` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/frb-code-generation/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Integrations & APIs - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/frb-code-generation --- # FRB Code Generation > **Note:** Check your user-level `remote-testing` rules before running commands. Codegen may require remote execution. ## Overview flutter_rust_bridge requires code generation when Rust APIs change. This skill maps change types to the minimal generation commands needed. **Core principle:** Run only the generation commands needed for your change type. **Validation rule:** If regenerated outputs cause previously green non-`Generate` jobs to fail, treat the generated outputs as suspect until they are validated from a clean environment. > **After codegen:** Check your user-level `remote-testing` rules. If codegen was run remotely, pull changes back to local. ## Quick Reference | Change Type | Command | |-------------|---------| | Example Rust API (`frb_example/**/rust/src/api/*.rs`) | `./frb_internal precommit-generate` | | Flutter integrate examples | `./frb_internal precommit-integrate` | | `frb_codegen/` generation logic | `./frb_internal precommit-generate` + `generate-internal-rust` | | `frb_rust/src/` core API | `./frb_internal generate-internal-rust` | | `frb_example/pure_dart` generator | `./frb_internal generate-internal-frb-example-pure-dart` | | CLI help documentation | `./frb_internal generate-internal-book-help` | | Non-generated (docs, comments, tests, `frb_dart/`) | No generation needed | ## Important Rules For CI diagnosis rules about generated-file format/lint failures, repeated package-level `Generate` drift, or `Generate :: FRB Codegen :: Command Integrate` failures, you MUST read `frb-fix-ci` first. This skill is for command selection, not CI failure-propagation diagnosis. For `pure_dart` / `pure_dart_pde` generation issues, treat `frb_example/pure_dart` as the upstream source and `frb_example/pure_dart_pde` as the derived copy. See `frb-fix-ci` for the CI diagnosis workflow. If CI repair has already entered repeated package-level drift, you MUST stop choosing narrower commands and switch to `frb-fix-ci`. Do not manually patch generated files as the final fix. The final accepted result should be produced by the corresponding generation command in a clean matching environment. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/fzyzcjy) — claim your Tome and manage your conversions.