Trait HookFormat 

pub trait HookFormat: Send + Sync {
    // Required methods
    fn parse_input(&self, stdin: &str) -> Result<HookInput, ParseError>;
    fn render_response(&self, verdict: Verdict) -> HookResponse;

    // Provided method
    fn render_context(&self, _context: &str) -> HookResponse { ... }
}

Required Methods

fn parse_input(&self, stdin: &str) -> Result<HookInput, ParseError>

fn render_response(&self, verdict: Verdict) -> HookResponse

Provided Methods

fn render_context(&self, _context: &str) -> HookResponse

Surface explanatory context to the model on a non-approval without changing the permission decision (the command still flows through the tool’s normal approval path, and the user’s own allowlist still applies).

The default abstains silently — same as today’s empty deny body. A target overrides this only when its hook schema has a verified field for injecting model-visible context without a permission decision.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors