Struct Reply 

pub struct Reply {
    pub stdout: Option<Value>,
    pub stderr: Option<String>,
    pub exit_code: i32,
}

What a hook process writes: stdout JSON, stderr text and an exit code.

Fields

stdout: Option<Value>

stderr: Option<String>

exit_code: i32

Implementations

impl Reply

pub fn none() -> Self

Print nothing, exit 0.

pub fn is_none(&self) -> bool

pub fn additional_context( kind: &EventKind, context: &str, ) -> Result<Self, OutputError>

Add context for the model. Only events in EventKind::takes_additional_context.

pub fn block_stop(reason: &str) -> Self

Keep a Stop run going: {"decision":"block","reason":R}.

pub fn deny_tool(wire: Wire, reason: &str) -> Self

Refuse a tool call. Claude: permissionDecision: "deny", exit 0. Codex: stderr and exit 2.

pub fn ask_tool(wire: Wire, reason: &str) -> Self

Ask the person to confirm a tool call. Claude: permissionDecision: "ask". Codex has no ask outcome and denies.

pub fn with_system_message(self, message: &str) -> Self

Add the top-level systemMessage the host shows to the person.

pub fn stdout_line(&self) -> Option<String>

The single stdout line, if any.

pub fn write_to(&self, out: impl Write, err: impl Write) -> i32

Write stdout and stderr; returns the exit code. A write failure on stdout is ignored for exit-0 replies so the host is never failed by a closed pipe.

Trait Implementations

impl Clone for Reply

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Reply

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Reply

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Reply

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Reply