{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/waxell/main/json-schema/waxell-llm-call-schema.json",
  "title": "Waxell LLM Call",
  "description": "An individual LLM API call captured by the Waxell auto-instrumentation layer.",
  "type": "object",
  "required": ["model"],
  "properties": {
    "id": { "type": "string" },
    "run_id": { "type": "string", "format": "uuid" },
    "model": {
      "type": "string",
      "description": "Provider-qualified model identifier (e.g. openai/gpt-4o, anthropic/claude-3-5-sonnet)."
    },
    "provider": { "type": "string" },
    "input_tokens": { "type": "integer", "minimum": 0 },
    "output_tokens": { "type": "integer", "minimum": 0 },
    "latency_ms": { "type": "integer", "minimum": 0 },
    "cost_usd": { "type": "number", "minimum": 0 },
    "prompt": { "type": "string" },
    "completion": { "type": "string" },
    "created_at": { "type": "string", "format": "date-time" }
  },
  "additionalProperties": false
}