> ## 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-4 instrument JSON Schema

> Get HIP-4 instrument JSON Schema contract. Includes route metadata, request parameters, response statuses, examples, and JSON fields for implementation.

Source OpenAPI: 0xArchive API 1.8.0; 227 paths; 217 component schemas.

Get a single HIP-4 per-side instrument by coin id (e.g., `0`, `1`). The `#`-prefixed form (`#0`, `#1`) is also accepted.

## Route Metadata

| Field | Value |
| - | - |
| Method | `GET` |
| Path | `/v1/hyperliquid/hip4/instruments/{symbol}` |
| operationId | `getHip4Instrument` |
| Tag | HIP-4 Outcomes - Instruments |
| Family | HIP-4 |
| Deprecated or legacy | no |

## Human endpoint reference

Open [`GET /v1/hyperliquid/hip4/instruments/{symbol}`](/api-reference/hip-4-outcomes--instruments/get-hip-4-instrument) for authentication, parameters, responses, and examples.

## Request Parameters

### Path Parameters

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getHip4Instrument path parameters",
  "type": "object",
  "required": [
    "symbol"
  ],
  "properties": {
    "symbol": {
      "description": "HIP-4 coin id (e.g., `0` for outcome 0 Yes side, `1` for No side). The `#`-prefixed form (`#0`, `#1`) is also accepted.",
      "type": "string",
      "example": "0",
      "x-parameter-location": "path"
    }
  }
}
```

## Response Contracts

### Status 200

HIP-4 instrument detail

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getHip4Instrument response 200",
  "description": "API response wrapping a single HIP-4 per-side instrument",
  "type": "object",
  "properties": {
    "data": {
      "description": "HIP-4 per-side instrument metadata. One row per `#N` coin. Each outcome has two sides: side 0 (Yes) and side 1 (No). Public asset_id formula: `100_000_000 + 10*outcome_id + side`. Coin format: `#<10*outcome_id + side>`.",
      "type": "object",
      "required": [
        "asset_id",
        "coin",
        "outcome_id",
        "side",
        "symbol"
      ],
      "properties": {
        "asset_id": {
          "description": "Public asset ID. Formula: `100_000_000 + 10*outcome_id + side`.",
          "type": "integer",
          "format": "int64",
          "example": 100000000
        },
        "builder_address": {
          "description": "Builder wallet address that deployed the outcome",
          "type": "string",
          "nullable": true,
          "example": "0x0000000000000000000000000000000000000000"
        },
        "coin": {
          "description": "Coin identifier. Returned in `#`-prefixed form. REST paths accept either the bare numeric id (e.g. `0`) or the `#`-prefixed form (e.g. `#0`). Format: `10*outcome_id + side`.",
          "type": "string",
          "example": "#0"
        },
        "description": {
          "description": "Pipe-delimited recurring-market metadata",
          "type": "string",
          "nullable": true,
          "example": "class:priceBinary|underlying:BTC|expiry:20260503-0600|targetPrice:78213|period:1d"
        },
        "display_title": {
          "description": "Per-side human-readable title, deterministic from parsed metadata.",
          "type": "string",
          "nullable": true,
          "example": "BTC above 78,213 on May 3 at 06:00 UTC? — Yes"
        },
        "first_seen_at": {
          "description": "When this outcome side was first observed by 0xArchive (UTC)",
          "type": "string",
          "format": "date-time",
          "nullable": true,
          "example": "2026-05-02T07:47:00Z"
        },
        "is_settled": {
          "description": "Whether the outcome has settled. Once settled, live tracking ends for the market, but historical data remains queryable.",
          "type": "boolean",
          "example": false
        },
        "last_updated_at": {
          "description": "Timestamp when the side metadata was last updated",
          "type": "string",
          "format": "date-time",
          "nullable": true,
          "example": "2026-05-02T20:25:00Z"
        },
        "name": {
          "description": "Human-readable per-side market name",
          "type": "string",
          "nullable": true,
          "example": "BTC ≥ 78213 by 2026-05-03 06:00 UTC — Yes"
        },
        "outcome_id": {
          "description": "Numeric outcome identifier",
          "type": "integer",
          "format": "int64",
          "example": 0
        },
        "recurring_class": {
          "description": "Recurring market class (e.g., `priceBinary`)",
          "type": "string",
          "nullable": true,
          "example": "priceBinary"
        },
        "recurring_expiry": {
          "description": "Settlement timestamp (UTC)",
          "type": "string",
          "format": "date-time",
          "nullable": true,
          "example": "2026-05-03T06:00:00Z"
        },
        "recurring_period": {
          "description": "Cadence of the recurring market (e.g., `1d`, `1h`)",
          "type": "string",
          "nullable": true,
          "example": "1d"
        },
        "recurring_target_px": {
          "description": "Target price for the binary outcome",
          "type": "number",
          "nullable": true,
          "example": 78213
        },
        "recurring_underlying": {
          "description": "Underlying asset for recurring price-binary outcomes",
          "type": "string",
          "nullable": true,
          "example": "BTC"
        },
        "settlement_at": {
          "description": "Settlement timestamp (UTC). Omitted while unsettled.",
          "type": "string",
          "format": "date-time",
          "nullable": true,
          "example": "2026-05-03T06:00:05.149Z"
        },
        "settlement_value": {
          "description": "Settlement value once the outcome settles (0.0 or 1.0 for binary outcomes). Omitted while unsettled.",
          "type": "number",
          "nullable": true,
          "example": 0
        },
        "side": {
          "description": "Side index: 0 = Yes, 1 = No",
          "type": "integer",
          "enum": [
            0,
            1
          ],
          "example": 0
        },
        "side_name": {
          "description": "Human label for this side (typically `Yes` or `No`)",
          "type": "string",
          "nullable": true,
          "example": "Yes"
        },
        "slug": {
          "description": "Per-side URL slug mirroring Hyperliquid's pattern.",
          "type": "string",
          "nullable": true,
          "example": "btc-above-78213-yes-may-03-0600"
        },
        "symbol": {
          "description": "Same value as `coin`. Provided for consistency with other venues.",
          "type": "string",
          "example": "#0"
        }
      }
    },
    "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"
        },
        "has_more": {
          "description": "Present on cursor-paged routes: true when another page exists. `next_cursor` is present exactly when it is true.",
          "type": "boolean"
        },
        "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"
        },
        "symbol": {
          "description": "Present on per-symbol routes: the symbol the response covers.",
          "type": "string"
        },
        "venue": {
          "description": "Present on per-symbol routes: the venue the response covers, for example `hyperliquid` or `hip3`.",
          "type": "string"
        }
      }
    },
    "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": "getHip4Instrument 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"
    },
    "param": {
      "description": "The parameter at fault, when the error is about one parameter.",
      "type": "string"
    },
    "request_id": {
      "description": "Unique request ID for support",
      "type": "string",
      "format": "uuid"
    },
    "success": {
      "description": "Always false on an error.",
      "type": "boolean",
      "example": false
    }
  }
}
```

##### 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",
  "param": "limit",
  "request_id": "3f2a9c71-5b0e-4d68-9a4c-7e1d2b6f8a05",
  "success": false
}
```

### Status 401

Authentication required

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getHip4Instrument 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"
    },
    "param": {
      "description": "The parameter at fault, when the error is about one parameter.",
      "type": "string"
    },
    "request_id": {
      "description": "Unique request ID for support",
      "type": "string",
      "format": "uuid"
    },
    "success": {
      "description": "Always false on an error.",
      "type": "boolean",
      "example": false
    }
  }
}
```

##### OpenAPI example

```json theme={"theme":"github-dark"}
{
  "code": 401,
  "error": "Missing authentication credentials. Provide X-API-Key header or Bearer token.",
  "error_code": "unauthorized",
  "request_id": "71ed4b6f-63ef-4ae1-a123-07ffa47c1c14",
  "success": false
}
```

### Status 404

Resource not found

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getHip4Instrument 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"
    },
    "param": {
      "description": "The parameter at fault, when the error is about one parameter.",
      "type": "string"
    },
    "request_id": {
      "description": "Unique request ID for support",
      "type": "string",
      "format": "uuid"
    },
    "success": {
      "description": "Always false on an error.",
      "type": "boolean",
      "example": false
    }
  }
}
```

##### OpenAPI example

```json theme={"theme":"github-dark"}
{
  "code": 404,
  "error": "No L4 checkpoint available before requested timestamp",
  "error_code": "not_found",
  "request_id": "ad7df471-eb8a-477c-bd9f-c685a9825f5b",
  "success": false
}
```

### Status 429

Rate limit exceeded

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getHip4Instrument 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"
    },
    "param": {
      "description": "The parameter at fault, when the error is about one parameter.",
      "type": "string"
    },
    "request_id": {
      "description": "Unique request ID for support",
      "type": "string",
      "format": "uuid"
    },
    "success": {
      "description": "Always false on an error.",
      "type": "boolean",
      "example": false
    }
  }
}
```

##### OpenAPI example

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


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