hook

type Hooks ¶

type Hooks struct {
	PreToolUse  []PreToolUse
	PostToolUse []PostToolUse
}

type PostToolUse ¶

type PostToolUse func(ctx context.Context, call tool.ToolCall, result string) (string, error)

PostToolUse is called after a tool executes. Receives the call and result. Return a modified result to transform it, or return the same result to pass through.

IMPORTANT: the return value unconditionally REPLACES the upstream result — returning ("", nil) clears the result. To pass through unchanged, return the input `result` verbatim. To signal an error, return a non-nil error (the result will be replaced with "error: <msg>").

type PreToolUse ¶

type PreToolUse func(ctx context.Context, call tool.ToolCall) (string, error)

PreToolUse is called before a tool executes. Return a non-empty result to skip execution and use that result. Return an error to abort with that error as the result. Return ("", nil) to proceed normally.