Function build_enforced_tool_request 

pub fn build_enforced_tool_request(
    messages: &[Message],
    tool: &ToolDefinition,
    provider: Provider,
) -> Value

Build a request that enforces a specific tool call (like pydantic AI / luagent pattern)

This is the recommended approach for structured outputs - it guarantees the LLM will call the specified tool, ensuring you always get back your structured data.

Example

use struct_llm::{build_enforced_tool_request, Provider, StructuredOutput};

let tool = MyOutput::tool_definition();
let request = build_enforced_tool_request(
    &messages,
    &tool,
    Provider::OpenAI
);
// The LLM will be forced to call MyOutput's tool