{
  "$id": "https://schemas.mapi.dev/v1/api-LogLine.json",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "description": "One captured line. ``line`` is untrusted text: render it as text only.",
  "examples": [
    {
      "attempt": 1,
      "line": "Sampling 4 chains for 400 tune and 1000 draw iterations",
      "run_id": "run_01jaf3q2x8m9v7k5h4g3f2e1d0",
      "seq": 120,
      "stream": "stderr",
      "ts": "2026-10-15T09:30:00Z"
    },
    {
      "attempt": 1,
      "fields": {
        "point": 3
      },
      "level": "warning",
      "line": "grid point 3 failed: the model did not converge",
      "run_id": "run_01jaf3q2x8m9v7k5h4g3f2e1d0",
      "seq": 121,
      "stream": "user",
      "ts": "2026-10-15T09:30:00Z"
    }
  ],
  "properties": {
    "attempt": {
      "minimum": 1,
      "title": "Attempt",
      "type": "integer"
    },
    "fields": {
      "anyOf": [
        {
          "additionalProperties": {
            "anyOf": [
              {
                "type": "boolean"
              },
              {
                "type": "integer"
              },
              {
                "type": "number"
              },
              {
                "maxLength": 256,
                "type": "string"
              },
              {
                "type": "null"
              }
            ]
          },
          "type": "object"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Structured fields of a 'user' line (v0.11)",
      "title": "Fields"
    },
    "level": {
      "anyOf": [
        {
          "enum": [
            "debug",
            "info",
            "warning",
            "error"
          ],
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "default": null,
      "description": "Only on stream 'user' (v0.11)",
      "title": "Level"
    },
    "line": {
      "maxLength": 4096,
      "title": "Line",
      "type": "string"
    },
    "run_id": {
      "examples": [
        "run_01jaf3q2x8m9v7k5h4g3f2e1d0"
      ],
      "pattern": "^[A-Za-z0-9][A-Za-z0-9_.\\-]{0,127}$",
      "title": "Run Id",
      "type": "string"
    },
    "seq": {
      "minimum": 0,
      "title": "Seq",
      "type": "integer"
    },
    "stream": {
      "enum": [
        "stdout",
        "stderr",
        "system",
        "user"
      ],
      "title": "Stream",
      "type": "string"
    },
    "truncated": {
      "default": false,
      "title": "Truncated",
      "type": "boolean"
    },
    "ts": {
      "format": "date-time",
      "title": "Ts",
      "type": "string"
    }
  },
  "required": [
    "run_id",
    "attempt",
    "seq",
    "ts",
    "stream",
    "line"
  ],
  "title": "LogLine",
  "type": "object",
  "x-mapi-contract-version": "0.2"
}