{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "v": {
      "type": "number",
      "const": 1,
      "description": "Protocol major version."
    },
    "type": {
      "type": "string",
      "const": "step.log"
    },
    "id": {
      "type": "string",
      "pattern": "^evt_[0-7][0-9A-HJKMNP-TV-Z]{25}$",
      "description": "The event's own id. Stable across a retry of the same event."
    },
    "ts": {
      "type": "string",
      "format": "date-time",
      "pattern": "^(?:(?:\\d\\d[2468][048]|\\d\\d[13579][26]|\\d\\d0[48]|[02468][048]00|[13579][26]00)-02-29|\\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\\d|30)|(?:02)-(?:0[1-9]|1\\d|2[0-8])))T(?:(?:[01]\\d|2[0-3]):[0-5]\\d:[0-5]\\d(?:\\.\\d+)?(?:Z|([+-](?:[01]\\d|2[0-3]):[0-5]\\d)))$",
      "description": "When it happened, by Chips' clock. Stamped on the way in; a value the sender writes is replaced."
    },
    "workspace_id": {
      "type": "string",
      "pattern": "^ws_[0-7][0-9A-HJKMNP-TV-Z]{25}$",
      "description": "A workspace identifier: `ws_` followed by a ULID."
    },
    "space_id": {
      "description": "The space, when the event belongs to one.",
      "type": "string",
      "pattern": "^spc_[0-7][0-9A-HJKMNP-TV-Z]{25}$"
    },
    "run_id": {
      "description": "The run, when the event belongs to one.",
      "type": "string",
      "pattern": "^run_[0-7][0-9A-HJKMNP-TV-Z]{25}$"
    },
    "seq": {
      "description": "Assigned by the server on append, monotonic per workspace. Absent on the way in.",
      "type": "integer",
      "exclusiveMinimum": 0,
      "maximum": 9007199254740991
    },
    "idempotency_key": {
      "description": "Required on every client-originated write. Sending the same key twice is a no-op.",
      "type": "string",
      "minLength": 1,
      "maxLength": 200
    },
    "actor": {
      "type": "object",
      "properties": {
        "kind": {
          "type": "string",
          "enum": [
            "person",
            "harness",
            "agent",
            "system"
          ],
          "description": "Whether a person, a harness, one of a harness's agents or Chips itself acted."
        },
        "id": {
          "type": "string",
          "minLength": 1,
          "description": "The participant id, or `system` for Chips."
        },
        "harness_id": {
          "description": "For an agent: the harness it speaks through, whose budget and runs are the agent's (ADR 0087). Filled in by Chips.",
          "type": "string",
          "pattern": "^hrn_[0-7][0-9A-HJKMNP-TV-Z]{25}$"
        }
      },
      "required": [
        "kind",
        "id"
      ],
      "description": "The participant an event is attributed to."
    },
    "step_id": {
      "type": "string",
      "minLength": 1,
      "maxLength": 120,
      "description": "Stable across the started and done events for one step."
    },
    "status": {
      "type": "string",
      "enum": [
        "started",
        "done",
        "failed"
      ],
      "description": "Where this step got to."
    },
    "title": {
      "description": "What the step is, when it was not in the plan.",
      "type": "string",
      "maxLength": 300
    },
    "tool": {
      "description": "The tool called, for example `drive.read`.",
      "type": "string",
      "maxLength": 120
    },
    "kind": {
      "description": "What kind of call the tool is, when the harness knows: the apps draw a step by it where they do not know the tool by its name.",
      "type": "string",
      "enum": [
        "search",
        "web",
        "shell",
        "image",
        "memory",
        "edit",
        "file",
        "mail",
        "handoff",
        "other"
      ]
    },
    "summary": {
      "description": "One line for the receipt.",
      "type": "string",
      "maxLength": 2000
    },
    "sources": {
      "description": "Where the information came from.",
      "maxItems": 32,
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "kind": {
            "type": "string",
            "enum": [
              "external",
              "internal"
            ],
            "description": "Whether the source is outside the workspace."
          },
          "label": {
            "type": "string",
            "minLength": 1,
            "maxLength": 200,
            "description": "What to show in the receipt, for example `vendor website`."
          },
          "url": {
            "description": "Where to look, when there is somewhere to look.",
            "type": "string",
            "format": "uri"
          }
        },
        "required": [
          "kind",
          "label"
        ],
        "description": "A source a harness used, shown in the receipt and on approval cards."
      }
    },
    "duration_ms": {
      "description": "How long the step took.",
      "type": "integer",
      "minimum": 0,
      "maximum": 9007199254740991
    },
    "error": {
      "description": "Why it failed, when it did.",
      "type": "string",
      "maxLength": 2000
    }
  },
  "required": [
    "v",
    "type",
    "id",
    "ts",
    "workspace_id",
    "actor",
    "step_id",
    "status"
  ],
  "description": "One tool call or reasoning step, for the receipt and the run timeline.",
  "$id": "https://chipschat.ai/schema/v1/step.log.json",
  "title": "StepLog"
}