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

# List token standards

> Discover the QRC token standards supported or planned by the Qustody Token Management API.

## `GET /v1/token-standards`

List the QRC token standards Qustody supports or plans to support. Each entry exposes its supported operations, required configuration fields, and current implementation status.

| Aspect               | Detail                |
| -------------------- | --------------------- |
| Method               | `GET`                 |
| Path                 | `/v1/token-standards` |
| Authentication       | Bearer API key        |
| Required permissions | `tokens:read`         |
| Idempotent           | Yes — read-only       |
| Approval policy      | Not applicable        |
| Blockchain effect    | None                  |
| Webhook events       | None                  |

### Example response

```json theme={null}
{
  "data": [
    {
      "standard": "QRC-20",
      "type": "fungible",
      "description": "Quantum Chain fungible token standard.",
      "supportedOperations": ["deploy", "mint", "burn", "transfer", "pause", "unpause", "grantRole", "revokeRole"],
      "requiredFields": ["name", "symbol", "decimals"],
      "optionalFields": ["initialSupply", "supplyPolicy", "approvalPolicyId"],
      "financeUseCase": "Stablecoins, utility tokens, institutional balances.",
      "implementationStatus": "partially-implemented"
    },
    {
      "standard": "QRC-3643",
      "type": "permissioned",
      "description": "Identity- and compliance-aware regulated token.",
      "supportedOperations": ["deploy", "mint", "burn", "freeze", "unfreeze", "transfer", "updateCompliance"],
      "requiredFields": ["name", "symbol", "decimals", "complianceConfig"],
      "optionalFields": ["allowlist", "approvalPolicyId"],
      "financeUseCase": "Permissioned regulated assets with identity-aware transfers.",
      "implementationStatus": "proposed"
    }
  ],
  "pagination": { "total": 7, "limit": 50, "offset": 0 }
}
```

## `GET /v1/token-standards/{standard}`

Fetch a single standard's full descriptor.

| Aspect         | Detail                                                                                              |
| -------------- | --------------------------------------------------------------------------------------------------- |
| Method         | `GET`                                                                                               |
| Path           | `/v1/token-standards/{standard}`                                                                    |
| Path parameter | `standard` — one of `QRC-20`, `QRC-721`, `QRC-1155`, `QRC-1400`, `QRC-3643`, `QRC-4626`, `QRC-3525` |

### Errors

| Code | Type                           | Meaning                          |
| ---: | ------------------------------ | -------------------------------- |
| 1700 | `TOKEN_STANDARD_NOT_SUPPORTED` | Unknown or unsupported standard. |

## Related

* [Token standards reference](/reference/token-standards)
* [Token templates](/api-reference/tokens/list-token-templates)
* [Create token](/api-reference/tokens/create-token)
* [Token error codes](/reference/error-codes)