baml-add-types

BAML Type Addition

When to Use

Adding new BAML functions or classes to cruxx-agentic/baml_src/.

Steps

1. Edit the .baml file (usually extract.baml or planner.baml):

   • Add class definitions with fields
   • Add function with client, prompt, and {{ ctx.output_format }}
   • Add at least one test case per function

2. Regenerate the BAML client:

   cd crates/cruxx-agentic && mise exec -- baml-cli generate
   

3. Verify compilation:

   cargo check -p cruxx-agentic
   

4. Mirror shared output types to cruxx-types::extraction (crates/cruxx-types/src/extraction.rs):

   • Structs with #[derive(Debug, Clone, Serialize, Deserialize)]
   • Use BTreeMap not HashMap for deterministic serialization
   • Use Option<T> for BAML T? fields
   • Use Vec<T> for BAML T[] fields
   • Use f64 for BAML float
   • Use i64 for BAML int

5. Verify cruxx-types compiles:

   cargo check -p cruxx-types
   

Common Failures

Symptom	Fix
baml-cli version mismatch	Match generators.baml version to Cargo.toml baml dep
baml-cli generate not found	Use mise exec -- baml-cli generate, not bare baml-cli
Generated code won't compile	Check baml_client/ is gitignored and regenerate cleanly