Enum HookResult 

pub enum HookResult {
    Continue,
    Block {
        reason: String,
    },
    Inject {
        content: String,
    },
    Confirm {
        message: String,
    },
    Modify {
        input: Value,
    },
}

What an extension handler returns after processing a hook event.

The runtime resolves multiple handlers by precedence:

• Block, Confirm, and Modify stop the handler chain for before_tool_call.
• Inject results are accumulated for before_message.
• Continue is the no-op default — processing continues normally.

Variants

Continue

Allow execution to proceed unchanged.

Block

Prevent the hooked operation. The reason is surfaced to the user.

Fields

reason: String

Inject

Inject context — the extension provides text to prepend to the system prompt or conversation. Used by before_message hooks.

Fields

content: String

Confirm

Ask the runtime to get explicit user confirmation before proceeding. Only valid on before_tool_call hooks.

Fields

message: String

Modify

Replace the tool input before execution. Only valid on before_tool_call hooks.

Fields

input: Value

Trait Implementations

impl Clone for HookResult

fn clone(&self) -> HookResult

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HookResult

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

Formats the value using the given formatter.

impl Default for HookResult

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for HookResult

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for HookResult

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.