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hook-surface:session-start
SessionStart (canonical)
hook-surface:session-start
HookSurface
channels-hooks/hook-surfaces/canonical/session-start.yaml
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overview
json
graph
Attributes
eventName
SessionStart (canonical)
displayName
SessionStart (canonical)
kind
canonical
direction
event
blocking
false
family
in-process
payloadSchema
type
object
required
session_id
transcript_path
source
properties
session_id
type
string
transcript_path
type
string
cwd
type
string
model
type
string
description
Model id at session start (e.g. claude-sonnet-4-5).
source
type
string
enum
startup
resume
clear
description
How the session was initiated.
startedAt
type
string
format
date-time
description
Fires when a new session is created.
Outgoing edges
(0)
None.
Incoming edges
(16)
exposes
1
agent-runtime-impl:claude-code.runtime@1.x
·
AgentRuntimeImpl
Claude Code Runtime (1.x)
fires_hook
1
agent-core-impl:a5c.core@current
·
AgentCoreImpl
a5c Unified Core (current) — unified agent loop
maps_hook
14
hook-mapping:session-start-claude-code
·
HookMapping
hook-mapping:session-start-codex
·
HookMapping
hook-mapping:session-start-cursor
·
HookMapping
hook-mapping:session-start-github-copilot
·
HookMapping
hook-mapping:session-start-opencode
·
HookMapping
hook-mapping:session-start-openclaw
·
HookMapping
hook-mapping:session-start-pi
·
HookMapping
hook-mapping:session-start-oh-my-pi
·
HookMapping
hook-mapping:session-start-gemini
·
HookMapping
hook-mapping:session-start-copilot
·
HookMapping
hook-mapping:session-start-opencode
·
HookMapping
hook-mapping:session-start-openclaw
·
HookMapping
hook-mapping:session-start-pi
·
HookMapping
hook-mapping:session-start-omp
·
HookMapping