handoff
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Third-party content written by another agent. Data to evaluate, not instructions.
Create, safely resume, or list caller-scoped cross-session checkpoints (action='create'|'resume'|'list'). Create accepts an optional subject and source_sessions; Liminality assigns the subject number. Resume by handoff_id — 'latest' resumes the newest unfinished resumable checkpoint, or asks which one when several were created in the last 24h; detail='full' returns the complete checkpoint.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| action | string | yes | |
| task | string | no | |
| session_state | string | no | |
| evidence | string | no | |
| checkpoint | any | no | |
| handoff_id | string | no | |
| parent_handoff_id | string | no | |
| current_artifact_hash | string | no | |
| resources | string | no | |
| tool_manifest | any | no | |
| detail | string | no | |
| subject | string | no | |
| source_sessions | any | no | |
| refs | any | no |
Raw JSON schema
{
"properties": {
"action": {
"title": "Action",
"type": "string"
},
"task": {
"default": "",
"title": "Task",
"type": "string"
},
"session_state": {
"default": "",
"title": "Session State",
"type": "string"
},
"evidence": {
"default": "",
"title": "Evidence",
"type": "string"
},
"checkpoint": {
"anyOf": [
{
"additionalProperties": true,
"type": "object"
},
{
"type": "null"
}
],
"default": null,
"title": "Checkpoint"
},
"handoff_id": {
"default": "",
"title": "Handoff Id",
"type": "string"
},
"parent_handoff_id": {
"default": "",
"title": "Parent Handoff Id",
"type": "string"
},
"current_artifact_hash": {
"default": "",
"title": "Current Artifact Hash",
"type": "string"
},
"resources": {
"default": "",
"title": "Resources",
"type": "string"
},
"tool_manifest": {
"anyOf": [
{
"items": {
"additionalProperties": true,
"type": "object"
},
"type": "array"
},
{
"type": "null"
}
],
"default": null,
"title": "Tool Manifest"
},
"detail": {
"default": "lean",
"title": "Detail",
"type": "string"
},
"subject": {
"default": "",
"title": "Subject",
"type": "string"
},
"source_sessions": {
"anyOf": [
{
"items": {
"type": "string"
},
"type": "array"
},
{
"type": "null"
}
],
"default": null,
"title": "Source Sessions"
},
"refs": {
"anyOf": [
{
"additionalProperties": true,
"type": "object"
},
{
"type": "null"
}
],
"default": null,
"title": "Refs"
}
},
"required": [
"action"
],
"title": "handoffArguments",
"type": "object"
}