{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://openrouterlist.jvrck.com/api/schema.json",
  "title": "OpenRouterList models API",
  "description": "The stable OpenRouterList projection of current OpenRouter model pricing and capabilities.",
  "type": "object",
  "required": ["schema_version", "updated", "source", "count", "models"],
  "properties": {
    "schema_version": {
      "description": "The major schema version; version 1 only receives additive field changes.",
      "const": 1
    },
    "updated": {
      "description": "The UTC time when the source model data last changed, in ISO 8601 format.",
      "type": "string",
      "format": "date-time"
    },
    "source": {
      "description": "The public OpenRouter models API from which this document is derived.",
      "type": "string",
      "format": "uri"
    },
    "count": {
      "description": "The number of entries in models.",
      "type": "integer",
      "minimum": 0
    },
    "models": {
      "description": "Current models sorted lexicographically by id.",
      "type": "array",
      "items": {
        "description": "A deliberately small projection of one OpenRouter model.",
        "type": "object",
        "required": ["id", "name", "url", "prompt_per_1m", "completion_per_1m", "pricing", "context_length", "capabilities", "input_modalities", "output_modalities", "created", "expiration_date"],
        "properties": {
          "id": {
            "description": "The exact OpenRouter model identifier used in API requests.",
            "type": "string"
          },
          "name": {
            "description": "The human-readable model name supplied by OpenRouter.",
            "type": "string"
          },
          "url": {
            "description": "The absolute OpenRouterList model-page URL, or null when the id cannot form a safe static path.",
            "type": ["string", "null"],
            "format": "uri"
          },
          "prompt_per_1m": {
            "description": "Prompt-token price in USD per one million tokens, or null for variable or unavailable pricing.",
            "type": ["number", "null"]
          },
          "completion_per_1m": {
            "description": "Completion-token price in USD per one million tokens, or null for variable or unavailable pricing.",
            "type": ["number", "null"]
          },
          "pricing": {
            "description": "Pricing classification: fixed, free, variable router pricing, or unavailable.",
            "type": "string",
            "enum": ["fixed", "free", "variable", "unavailable"]
          },
          "context_length": {
            "description": "Maximum context-window length in tokens, or null when it is unavailable.",
            "type": ["integer", "null"],
            "minimum": 0
          },
          "capabilities": {
            "description": "Five capability flags derived consistently from OpenRouter supported_parameters.",
            "type": "object",
            "required": ["tool_calling", "structured_outputs", "reasoning", "response_format", "web_search"],
            "properties": {
              "tool_calling": {
                "description": "True when both tools and tool_choice are advertised.",
                "type": "boolean"
              },
              "structured_outputs": {
                "description": "True when structured_outputs is advertised.",
                "type": "boolean"
              },
              "reasoning": {
                "description": "True when reasoning or include_reasoning is advertised.",
                "type": "boolean"
              },
              "response_format": {
                "description": "True when response_format is advertised.",
                "type": "boolean"
              },
              "web_search": {
                "description": "True when web_search_options is advertised.",
                "type": "boolean"
              }
            }
          },
          "input_modalities": {
            "description": "Input modality names advertised by OpenRouter.",
            "type": "array",
            "items": {
              "description": "One accepted input modality.",
              "type": "string"
            }
          },
          "output_modalities": {
            "description": "Output modality names advertised by OpenRouter.",
            "type": "array",
            "items": {
              "description": "One produced output modality.",
              "type": "string"
            }
          },
          "created": {
            "description": "The model creation time in UTC ISO 8601 format, or null when unavailable.",
            "type": ["string", "null"],
            "format": "date-time"
          },
          "expiration_date": {
            "description": "The retirement date reported by OpenRouter, or null when none is announced.",
            "type": ["string", "null"]
          }
        }
      }
    }
  }
}