> ## 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 coverage summary JSON Schema

> Get coverage summary 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 data coverage summary for supported venue families, including earliest/latest data, record counts, and completeness. Note: May take 30-60 seconds on first request (results are cached server-side for 5 minutes).

## Route Metadata

| Field                | Value                       |
| -------------------- | --------------------------- |
| Method               | `GET`                       |
| Path                 | `/v1/data-quality/coverage` |
| operationId          | `getDataQualityCoverage`    |
| Tag                  | Data Quality                |
| Family               | Data Quality                |
| Deprecated or legacy | no                          |

## Response Contracts

### Status 200

Coverage summary

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getDataQualityCoverage response 200",
  "description": "Overall coverage response",
  "type": "object",
  "properties": {
    "exchanges": {
      "description": "Coverage entries for supported venue-family keys. The response field remains named `exchanges` in the API contract.",
      "type": "array",
      "items": {
        "description": "Coverage for one supported venue-family key.",
        "type": "object",
        "properties": {
          "data_types": {
            "type": "object",
            "additionalProperties": {
              "description": "Coverage for a data type",
              "type": "object",
              "properties": {
                "completeness": {
                  "description": "Completeness percentage (0-100)",
                  "type": "number"
                },
                "earliest": {
                  "description": "Earliest available data timestamp",
                  "type": "string",
                  "format": "date-time"
                },
                "lag": {
                  "description": "Current data lag",
                  "type": "string",
                  "nullable": true
                },
                "latest": {
                  "description": "Latest available data timestamp",
                  "type": "string",
                  "format": "date-time"
                },
                "resolution": {
                  "description": "Data resolution (e.g., '1.2s', '1m')",
                  "type": "string",
                  "nullable": true
                },
                "symbols": {
                  "description": "Number of symbols with data",
                  "type": "integer"
                },
                "total_records": {
                  "description": "Total number of records",
                  "type": "integer",
                  "format": "int64"
                }
              }
            }
          },
          "exchange": {
            "description": "Exchange name",
            "type": "string"
          }
        }
      }
    }
  }
}
```

### Status 401

Authentication required

#### application/json

```json theme={"theme":"github-dark"}
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "getDataQualityCoverage 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."
}
```