> ## 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 HIP-3 instrument JSON Schema

> Get HIP-3 instrument JSON Schema contract. Includes route metadata, request parameters, response statuses, examples, and JSON fields for implementation.

Source OpenAPI: 0xArchive API 1.5.0; 140 paths; 119 component schemas.

Get a specific HIP-3 instrument by coin name with latest market data. Coin names are case-sensitive (e.g., km:US500, xyz:XYZ100).

## Route Metadata

| Field                | Value                                       |
| -------------------- | ------------------------------------------- |
| Method               | `GET`                                       |
| Path                 | `/v1/hyperliquid/hip3/instruments/{symbol}` |
| operationId          | `getHip3Instrument`                         |
| Tag                  | HIP-3 Builder Perps - Instruments           |
| Family               | HIP-3                                       |
| Deprecated or legacy | no                                          |

## Request Parameters

### Path Parameters

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getHip3Instrument path parameters",
  "type": "object",
  "required": [
    "symbol"
  ],
  "properties": {
    "symbol": {
      "description": "HIP-3 symbol name (e.g., km:US500, xyz:XYZ100). Case-sensitive.",
      "type": "string",
      "x-parameter-location": "path"
    }
  }
}
```

## Response Contracts

### Status 200

HIP-3 instrument details

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getHip3Instrument response 200",
  "description": "API response wrapping a single HIP-3 instrument",
  "type": "object",
  "properties": {
    "data": {
      "description": "HIP-3 Builder Perps instrument with latest market data. Derived from live open interest data.",
      "type": "object",
      "required": [
        "coin",
        "namespace",
        "symbol",
        "ticker"
      ],
      "properties": {
        "coin": {
          "description": "Full coin name (e.g., km:US500, xyz:XYZ100) (deprecated, use symbol instead)",
          "type": "string",
          "deprecated": true,
          "example": "km:US500"
        },
        "latest_timestamp": {
          "description": "Timestamp of latest data point",
          "type": "string",
          "format": "date-time",
          "nullable": true,
          "example": "2026-02-18T12:00:00.000Z"
        },
        "mark_price": {
          "description": "Latest mark price",
          "type": "number",
          "nullable": true,
          "example": 5432.1
        },
        "mid_price": {
          "description": "Latest mid price",
          "type": "number",
          "nullable": true,
          "example": 5432.05
        },
        "namespace": {
          "description": "Builder namespace (e.g., km, xyz)",
          "type": "string",
          "example": "km"
        },
        "open_interest": {
          "description": "Latest open interest",
          "type": "number",
          "nullable": true,
          "example": 1234567.89
        },
        "symbol": {
          "description": "Trading pair symbol",
          "type": "string",
          "example": "km:US500"
        },
        "ticker": {
          "description": "Ticker within the namespace (e.g., US500, XYZ100)",
          "type": "string",
          "example": "US500"
        }
      }
    },
    "meta": {
      "description": "Response metadata",
      "type": "object",
      "properties": {
        "count": {
          "description": "Number of records returned",
          "type": "integer"
        },
        "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
        },
        "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": "getHip3Instrument response 400",
  "description": "Error response",
  "type": "object",
  "properties": {
    "code": {
      "description": "HTTP status code",
      "type": "integer"
    },
    "error": {
      "description": "Error message",
      "type": "string"
    }
  }
}
```

##### OpenAPI example

```json theme={"theme":"github-dark"}
{
  "code": 400,
  "error": "Invalid request parameters"
}
```

### Status 401

Authentication required

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getHip3Instrument response 401",
  "description": "Error response",
  "type": "object",
  "properties": {
    "code": {
      "description": "HTTP status code",
      "type": "integer"
    },
    "error": {
      "description": "Error message",
      "type": "string"
    }
  }
}
```

##### 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": "getHip3Instrument response 404",
  "description": "Error response",
  "type": "object",
  "properties": {
    "code": {
      "description": "HTTP status code",
      "type": "integer"
    },
    "error": {
      "description": "Error message",
      "type": "string"
    }
  }
}
```

##### 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": "getHip3Instrument response 429",
  "description": "Error response",
  "type": "object",
  "properties": {
    "code": {
      "description": "HTTP status code",
      "type": "integer"
    },
    "error": {
      "description": "Error message",
      "type": "string"
    }
  }
}
```

##### OpenAPI example

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