schema-coerce

Coerce LLM JSON values to a simple field-schema. String→int, "yes"→ true, unwrap {"result": {...}} wrappers, fill missing fields from defaults.

use schema_coerce::{coerce, Field, Type};
use serde_json::json;

let schema = vec![
    Field { name: "count", ty: Type::Int, default: None },
    Field { name: "ok", ty: Type::Bool, default: Some(json!(false)) },
];
let raw = json!({ "count": "42", "ok": "yes" });
let fixed = coerce(raw, &schema);
assert_eq!(fixed["count"], json!(42));

Pair with llm-json-repair (parse) and json-pluck (extract). MIT or Apache-2.0.