{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://raw.githubusercontent.com/api-evangelist/fastly/main/json-schema/fastly-ai-accelerator-request-schema.json",
  "title": "Fastly AI Accelerator Chat Completion Request",
  "description": "OpenAI-compatible chat completion request proxied through Fastly AI Accelerator's semantic cache.",
  "type": "object",
  "required": ["model", "messages"],
  "properties": {
    "model": { "type": "string", "examples": ["gpt-4o-mini", "gpt-4o", "gemini-1.5-pro"] },
    "messages": {
      "type": "array",
      "minItems": 1,
      "items": {
        "type": "object",
        "required": ["role", "content"],
        "properties": {
          "role": { "type": "string", "enum": ["system", "user", "assistant", "tool"] },
          "content": { "type": "string" },
          "name": { "type": "string" }
        }
      }
    },
    "temperature": { "type": "number", "minimum": 0, "maximum": 2 },
    "top_p": { "type": "number", "minimum": 0, "maximum": 1 },
    "max_tokens": { "type": "integer", "minimum": 1 },
    "stream": { "type": "boolean", "default": false },
    "stop": {
      "oneOf": [
        { "type": "string" },
        { "type": "array", "items": { "type": "string" } }
      ]
    },
    "user": { "type": "string" }
  },
  "additionalProperties": true
}