> ## 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 instrument JSON Schema

> Get Lighter on Robinhood Chain instrument 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 specification of one Lighter on Robinhood Chain market. Returns a `LighterInstrument` object with fees, market ID, and minimum order amounts.

## Route Metadata

| Field | Value |
| - | - |
| Method | `GET` |
| Path | `/v1/rh-lighter/instruments/{symbol}` |
| operationId | `getRhLighterInstrument` |
| Tag | Lighter on Robinhood Chain - Instruments |
| 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": "getRhLighterInstrument 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"
    }
  }
}
```

## Response Contracts

### Status 200

Lighter instrument details

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getRhLighterInstrument response 200",
  "type": "object",
  "properties": {
    "data": {
      "description": "Trading instrument specification (Lighter). Different schema from Hyperliquid Instrument.",
      "type": "object",
      "required": [
        "is_active",
        "liquidation_fee",
        "maker_fee",
        "market_id",
        "market_type",
        "min_base_amount",
        "min_quote_amount",
        "price_decimals",
        "quote_decimals",
        "size_decimals",
        "status",
        "symbol",
        "taker_fee"
      ],
      "properties": {
        "is_active": {
          "description": "Whether the instrument is currently tradeable",
          "type": "boolean",
          "example": true
        },
        "liquidation_fee": {
          "description": "Liquidation fee rate",
          "type": "number",
          "example": 0.005
        },
        "maker_fee": {
          "description": "Maker fee rate (can be negative for rebates)",
          "type": "number",
          "example": 0.0001
        },
        "market_id": {
          "description": "Unique market identifier",
          "type": "integer",
          "example": 0
        },
        "market_type": {
          "description": "Type of market",
          "type": "string",
          "enum": [
            "perp",
            "spot"
          ],
          "example": "perp"
        },
        "min_base_amount": {
          "description": "Minimum order size in base currency",
          "type": "number",
          "example": 0.001
        },
        "min_quote_amount": {
          "description": "Minimum order value in quote currency",
          "type": "number",
          "example": 1
        },
        "price_decimals": {
          "description": "Price decimal precision",
          "type": "integer",
          "example": 2
        },
        "quote_decimals": {
          "description": "Quote currency decimal precision",
          "type": "integer",
          "example": 6
        },
        "size_decimals": {
          "description": "Size decimal precision",
          "type": "integer",
          "example": 4
        },
        "status": {
          "description": "Market status",
          "type": "string",
          "enum": [
            "active",
            "inactive",
            "delisted"
          ],
          "example": "active"
        },
        "symbol": {
          "description": "Instrument symbol",
          "type": "string",
          "example": "ETH"
        },
        "taker_fee": {
          "description": "Taker fee rate (e.g., 0.0004 = 0.04%)",
          "type": "number",
          "example": 0.0004
        }
      }
    },
    "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": "getRhLighterInstrument 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": "getRhLighterInstrument 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": "getRhLighterInstrument 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": "getRhLighterInstrument 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"
}
```