> ## Documentation Index
> Fetch the complete documentation index at: https://docs.0xarchive.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Get Lighter on Robinhood Chain order book JSON Schema

> Get Lighter on Robinhood Chain order book JSON Schema contract. Includes route metadata, schemas, examples, and implementation notes.

Source OpenAPI: 0xArchive API 1.7.0; 218 paths; 210 component schemas.

Get the latest Lighter on Robinhood Chain L2 order book, or the book at a specific timestamp. Returns price, size, and order count at each level. Served from August 22, 2026 18:43 UTC.

## Route Metadata

| Field | Value |
| - | - |
| Method | `GET` |
| Path | `/v1/rh-lighter/orderbook/{symbol}` |
| operationId | `getRhLighterOrderbook` |
| Tag | Lighter on Robinhood Chain - Order Book |
| Family | Lighter on Robinhood Chain |
| Deprecated or legacy | no |

## Request Parameters

### Path Parameters

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getRhLighterOrderbook path parameters",
  "type": "object",
  "required": [
    "symbol"
  ],
  "properties": {
    "symbol": {
      "description": "Market symbol on Lighter on Robinhood Chain. Perpetuals use the uppercase base symbol (BTC); spot pairs are dashed and USDG-quoted (AAPL-USDG). List markets with GET /v1/rh-lighter/instruments.",
      "type": "string",
      "example": "BTC",
      "x-parameter-location": "path"
    }
  }
}
```

### Query Parameters

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getRhLighterOrderbook query parameters",
  "type": "object",
  "properties": {
    "timestamp": {
      "description": "Unix timestamp in milliseconds. If not provided, returns latest snapshot.",
      "type": "integer",
      "format": "int64",
      "example": 1788000000000,
      "x-parameter-location": "query"
    },
    "depth": {
      "description": "Requested price levels per side. The Lighter native L2 route includes all served levels.",
      "type": "integer",
      "example": 20,
      "x-parameter-location": "query"
    }
  }
}
```

## Response Contracts

### Status 200

Order book snapshot

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getRhLighterOrderbook response 200",
  "type": "object",
  "properties": {
    "data": {
      "description": "L2 order book snapshot",
      "type": "object",
      "required": [
        "asks",
        "bids",
        "coin",
        "symbol",
        "timestamp"
      ],
      "properties": {
        "asks": {
          "description": "Ask price levels (best ask first)",
          "type": "array",
          "items": {
            "description": "Single price level in the order book",
            "type": "object",
            "required": [
              "n",
              "px",
              "sz"
            ],
            "properties": {
              "n": {
                "description": "Number of orders at this level",
                "type": "integer",
                "example": 15
              },
              "px": {
                "description": "Price",
                "type": "string",
                "example": "42150.00"
              },
              "sz": {
                "description": "Total size at this price level",
                "type": "string",
                "example": "1.5"
              }
            }
          }
        },
        "bids": {
          "description": "Bid price levels (best bid first)",
          "type": "array",
          "items": {
            "description": "Single price level in the order book",
            "type": "object",
            "required": [
              "n",
              "px",
              "sz"
            ],
            "properties": {
              "n": {
                "description": "Number of orders at this level",
                "type": "integer",
                "example": 15
              },
              "px": {
                "description": "Price",
                "type": "string",
                "example": "42150.00"
              },
              "sz": {
                "description": "Total size at this price level",
                "type": "string",
                "example": "1.5"
              }
            }
          }
        },
        "coin": {
          "description": "Trading pair symbol (deprecated, use symbol instead)",
          "type": "string",
          "deprecated": true,
          "example": "BTC"
        },
        "mid_price": {
          "description": "Mid price (best bid + best ask) / 2",
          "type": "string",
          "example": "42150.50"
        },
        "spread": {
          "description": "Spread in absolute terms (best ask - best bid)",
          "type": "string",
          "example": "1.00"
        },
        "spread_bps": {
          "description": "Spread in basis points",
          "type": "string",
          "example": "2.37"
        },
        "symbol": {
          "description": "Trading pair symbol",
          "type": "string",
          "example": "BTC"
        },
        "timestamp": {
          "description": "Snapshot timestamp (UTC)",
          "type": "string",
          "format": "date-time",
          "example": "2025-01-21T10:30:45.123Z"
        }
      }
    },
    "meta": {
      "description": "Response metadata",
      "type": "object",
      "properties": {
        "count": {
          "description": "Number of records returned",
          "type": "integer"
        },
        "coverage_from": {
          "description": "Earliest coverage for the requested symbol and data type. Present only when the requested window ends before coverage begins.",
          "type": "string",
          "format": "date-time"
        },
        "next_cursor": {
          "description": "Cursor for pagination (timestamp). Use this value as the `cursor` parameter to fetch the next page of results.",
          "type": "string",
          "nullable": true
        },
        "notice": {
          "description": "Human-readable advisory about the response. Used when the requested window ends before coverage begins for the symbol, and on CVD responses that are one page of several; may carry other advisories in future.",
          "type": "string"
        },
        "request_id": {
          "description": "Unique request ID for support",
          "type": "string",
          "format": "uuid"
        }
      }
    },
    "success": {
      "type": "boolean",
      "example": true
    }
  }
}
```

### Status 400

Invalid request

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getRhLighterOrderbook response 400",
  "description": "Error response",
  "type": "object",
  "properties": {
    "code": {
      "description": "HTTP status code",
      "type": "integer"
    },
    "error": {
      "description": "Error message",
      "type": "string"
    },
    "error_code": {
      "description": "Machine-readable error code. Common values: `invalid_query_params` (a query parameter failed to parse or validate) and `invalid_path_params` (a path parameter failed to parse). Other endpoint-specific codes exist; treat unknown codes as generic errors of the given HTTP status.",
      "type": "string"
    },
    "request_id": {
      "description": "Unique request ID for support",
      "type": "string",
      "format": "uuid"
    }
  }
}
```

##### OpenAPI example

```json theme={"theme":"github-dark"}
{
  "code": 400,
  "error": "Failed to deserialize query string: limit: invalid digit found in string",
  "error_code": "invalid_query_params",
  "request_id": "3f2a9c71-5b0e-4d68-9a4c-7e1d2b6f8a05"
}
```

### Status 401

Authentication required

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getRhLighterOrderbook response 401",
  "description": "Error response",
  "type": "object",
  "properties": {
    "code": {
      "description": "HTTP status code",
      "type": "integer"
    },
    "error": {
      "description": "Error message",
      "type": "string"
    },
    "error_code": {
      "description": "Machine-readable error code. Common values: `invalid_query_params` (a query parameter failed to parse or validate) and `invalid_path_params` (a path parameter failed to parse). Other endpoint-specific codes exist; treat unknown codes as generic errors of the given HTTP status.",
      "type": "string"
    },
    "request_id": {
      "description": "Unique request ID for support",
      "type": "string",
      "format": "uuid"
    }
  }
}
```

##### OpenAPI example

```json theme={"theme":"github-dark"}
{
  "code": 401,
  "error": "Missing or invalid API key. Provide X-API-Key header."
}
```

### Status 404

Resource not found

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getRhLighterOrderbook response 404",
  "description": "Error response",
  "type": "object",
  "properties": {
    "code": {
      "description": "HTTP status code",
      "type": "integer"
    },
    "error": {
      "description": "Error message",
      "type": "string"
    },
    "error_code": {
      "description": "Machine-readable error code. Common values: `invalid_query_params` (a query parameter failed to parse or validate) and `invalid_path_params` (a path parameter failed to parse). Other endpoint-specific codes exist; treat unknown codes as generic errors of the given HTTP status.",
      "type": "string"
    },
    "request_id": {
      "description": "Unique request ID for support",
      "type": "string",
      "format": "uuid"
    }
  }
}
```

##### OpenAPI example

```json theme={"theme":"github-dark"}
{
  "code": 404,
  "error": "Resource not found"
}
```

### Status 429

Rate limit exceeded

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getRhLighterOrderbook response 429",
  "description": "Error response",
  "type": "object",
  "properties": {
    "code": {
      "description": "HTTP status code",
      "type": "integer"
    },
    "error": {
      "description": "Error message",
      "type": "string"
    },
    "error_code": {
      "description": "Machine-readable error code. Common values: `invalid_query_params` (a query parameter failed to parse or validate) and `invalid_path_params` (a path parameter failed to parse). Other endpoint-specific codes exist; treat unknown codes as generic errors of the given HTTP status.",
      "type": "string"
    },
    "request_id": {
      "description": "Unique request ID for support",
      "type": "string",
      "format": "uuid"
    }
  }
}
```

##### OpenAPI example

```json theme={"theme":"github-dark"}
{
  "code": 429,
  "error": "Rate limit exceeded"
}
```