hooks

package

v0.4.1 Latest Latest Go to latest Published: Nov 1, 2026 License: MIT Imports: 14 Imported by: 0

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Repository

github.com/trebi-ai/agent-visor

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Documentation ¶

Overview ¶

Package hooks reads the hook calls of vendor agent CLIs and edits their hook config files. It does not import the visor.

Index ¶

Constants
Variables
func ConfigPath(harness, dir string) (string, error)
func Names() []string
func Supported(harness string) bool
type Ask
type Event
- func Parse(harness string, data []byte) (Event, bool, error)
- func (e Event) InputText() string
type Installer
- func NewInstaller(tag string, argv []string) (*Installer, error)
type Kind
type State

Constants ¶

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const MaxPayload = 1 << 20

MaxPayload is the largest hook payload, in bytes.

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const Version = 1

Version is the shape of the hook command. Increase it when the command changes, so that Status reports outdated.

Variables ¶

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var (
	ErrUnsupported = errors.New("hooks: harness has no hook support")
	ErrPayload     = errors.New("hooks: bad payload")
)

Errors.

View Source

var ErrCommand = errors.New("hooks: bad hook command")

ErrCommand means that the hook command is not usable.

Functions ¶

func ConfigPath ¶

func ConfigPath(harness, dir string) (string, error)

ConfigPath gives the hook config file in the vendor home dir.

func Names ¶

func Names() []string

Names lists the harnesses with hook support, sorted.

func Supported ¶

func Supported(harness string) bool

Supported reports whether the harness has hook support.

Types ¶

type Ask ¶

type Ask string

Ask tells what a request asks the user.

const (
	AskPermission Ask = "permission"
	AskQuestion   Ask = "question"
)

Asks.

type Event ¶

type Event struct {
	Harness string
	// Name is the vendor event name.
	Name string
	Kind Kind
	// VendorID is the vendor session id.
	VendorID   string
	Cwd        string
	Transcript string
	Prompt     string
	Tool       string
	ToolUseID  string
	ToolInput  json.RawMessage
	// Ask is set on a request.
	Ask Ask
	// Question and Options are the first question of a question tool.
	Question string
	Options  []string
	// Message is the last assistant message of a stop.
	Message     string
	Interrupted bool
	// Error is set on a stop that failed.
	Error string
}

Event is one hook call in a neutral form.

func Parse ¶

func Parse(harness string, data []byte) (Event, bool, error)

Parse reads one hook payload of a harness. ok is false for an event that does not change a session, for example a subagent tool or a compact restart.

func (Event) InputText ¶

func (e Event) InputText() string

InputText gives a short text of the tool input: the command or the path when there is one, else the compact JSON.

type Installer ¶

type Installer struct {
	// contains filtered or unexported fields
}

Installer adds and removes the hook entries of one visor in the vendor hook configs. It keeps the other entries and the rest of each file.

func NewInstaller ¶

func NewInstaller(tag string, argv []string) (*Installer, error)

NewInstaller takes the hook command before the harness name, with an absolute program path first, and a tag that names the visor.

func (*Installer) Command ¶

func (i *Installer) Command(harness string) string

Command is the hook command line for a harness. It reads stdin and does nothing when the program is gone.

func (*Installer) Install ¶

func (i *Installer) Install(harness, dir string) error

Install adds or updates the hook entries of the harness in the vendor home dir.

func (*Installer) Remove ¶

func (i *Installer) Remove(harness, dir string) error

Remove takes out only the hook entries of this visor.

func (*Installer) Status ¶

func (i *Installer) Status(harness, dir string) (State, error)

Status gives the hook state of the harness in the vendor home dir.

type Kind ¶

type Kind string

Kind is the neutral kind of a hook event.

const (
	KindSessionStart Kind = "session_start"
	KindPrompt       Kind = "prompt"
	// KindTool is a tool that starts. The turn runs.
	KindTool     Kind = "tool"
	KindToolDone Kind = "tool_done"
	// KindRequest is a permission or a question with its details.
	KindRequest Kind = "request"
	// KindAttention means that the harness waits for the user, with no
	// details.
	KindAttention  Kind = "attention"
	KindStop       Kind = "stop"
	KindSessionEnd Kind = "session_end"
)

Event kinds.

type State ¶

type State string

State is the hook state of one harness in one vendor home.

const (
	StateInstalled State = "installed"
	StateMissing   State = "missing"
	StateOutdated  State = "outdated"
	// StateUntrusted means that the vendor runs the hooks only after the user
	// trusts them in the vendor CLI.
	StateUntrusted State = "untrusted"
)

Hook states.

Source Files ¶

View all Source files

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