{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "MLX Benchmark Result",
  "description": "Structured result envelope for a single benchmark suite run",
  "type": "object",
  "required": [
    "schema_version",
    "timestamp",
    "git_sha",
    "trigger",
    "suite",
    "model",
    "system",
    "results"
  ],
  "additionalProperties": false,
  "properties": {
    "schema_version": {
      "type": "string",
      "const": "1",
      "description": "Schema version — bump when making breaking changes"
    },
    "timestamp": {
      "type": "string",
      "format": "date-time",
      "description": "ISO 8601 UTC timestamp of when the run started"
    },
    "git_sha": {
      "type": "string",
      "minLength": 7,
      "description": "Full or short git commit SHA of the repo at run time"
    },
    "trigger": {
      "type": "string",
      "enum": ["schedule", "pr", "workflow_dispatch", "local"],
      "description": "What triggered this benchmark run"
    },
    "pr_number": {
      "type": ["integer", "null"],
      "description": "Pull request number if trigger is 'pr', otherwise null"
    },
    "suite": {
      "type": "string",
      "enum": [
        "throughput",
        "ttft",
        "tool-calling",
        "code-accuracy",
        "framework-eval",
        "capability-comparison",
        "coding",
        "reasoning",
        "knowledge",
        "evalplus",
        "math-hard"
      ],
      "description": "Which benchmark suite was executed"
    },
    "model": {
      "type": "string",
      "description": "Model name/ID used for inference (e.g. Qwen3.5-122B-A10B-4bit)"
    },
    "skipped": {
      "type": "boolean",
      "description": "True when the suite was skipped (e.g. MLX server unavailable on standard runner)"
    },
    "system": {
      "type": "object",
      "required": ["os", "chip", "memory_gb"],
      "additionalProperties": false,
      "properties": {
        "os": {
          "type": "string",
          "description": "Operating system and version (e.g. macOS 15.3.2)"
        },
        "chip": {
          "type": "string",
          "description": "CPU/chip model (e.g. Apple M4 Max)"
        },
        "memory_gb": {
          "type": "integer",
          "description": "Total system RAM in GB"
        },
        "vllm_mlx_version": {
          "type": "string",
          "description": "vllm-mlx package version if available"
        },
        "runner": {
          "type": "string",
          "description": "GitHub Actions runner label (e.g. macos-latest, self-hosted)"
        }
      }
    },
    "results": {
      "type": "array",
      "description": "Individual test/metric results",
      "items": {
        "type": "object",
        "required": ["name", "metric", "value", "unit"],
        "additionalProperties": false,
        "properties": {
          "name": {
            "type": "string",
            "description": "Test or measurement name (e.g. 'langgraph', 'tok_per_sec_512')"
          },
          "metric": {
            "type": "string",
            "description": "Metric type (e.g. 'latency', 'throughput', 'score', 'f1')"
          },
          "value": {
            "type": "number",
            "description": "Numeric metric value"
          },
          "unit": {
            "type": "string",
            "description": "Unit of measurement (e.g. 'seconds', 'tok/s', 'ratio', 'bool')"
          },
          "tags": {
            "type": "object",
            "description": "Arbitrary string key-value metadata (e.g. framework, output_tokens)",
            "additionalProperties": {
              "type": "string"
            }
          },
          "raw": {
            "description": "Original unmodified output from the underlying tool or script"
          }
        }
      }
    },
    "memory_snapshots": {
      "type": "array",
      "description": "Memory usage measurements at different phases of the run",
      "items": {
        "type": "object",
        "required": ["phase", "rss_gb"],
        "additionalProperties": false,
        "properties": {
          "phase": {
            "type": "string",
            "description": "Run phase (e.g. 'before', 'loading', 'peak', 'after')"
          },
          "rss_gb": {
            "type": "number",
            "description": "Process RSS memory in GB"
          },
          "free_gb": {
            "type": "number",
            "description": "Free system memory in GB"
          },
          "wired_gb": {
            "type": "number",
            "description": "Wired (non-pageable) memory in GB"
          },
          "swap_mb": {
            "type": "number",
            "description": "Swap usage in MB"
          }
        }
      }
    },
    "errors": {
      "type": "array",
      "description": "Non-fatal errors or warnings encountered during the run",
      "items": {
        "type": "string"
      }
    }
  }
}