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

# Overview

> Full API reference for the Sprinter Credit engine — lock collateral, draw credit, repay, unlock, and manage earn vaults

## Base URL

```
https://api.sprinter.tech
```

## OpenAPI Specification

The full machine-readable API spec is available for AI agents, code generators, and API clients:

| Resource                | URL                                                                                  |
| ----------------------- | ------------------------------------------------------------------------------------ |
| **OpenAPI Spec (JSON)** | [api.sprinter.tech/swagger/doc.json](https://api.sprinter.tech/swagger/doc.json)     |
| **Swagger UI**          | [api.sprinter.tech/swagger/index.html](https://api.sprinter.tech/swagger/index.html) |

<Tip>
  Point your AI agent or code generator at the [OpenAPI spec](https://api.sprinter.tech/swagger/doc.json) to auto-generate a client in any language.
</Tip>

## Endpoints

### Info

| Endpoint                                                                                                                         | Description                                                                               |
| -------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------- |
| [`GET /credit/protocol`](/api-reference/sprinter/credit/get-credit-protocol-configuration)                                       | Protocol configuration — supported chains, collateral assets, LTV ratios, earn strategies |
| [`GET /credit/accounts/{account}/info`](/api-reference/sprinter/credit/get-user-credit-information)                              | Account credit position — capacity, debt, health factor                                   |
| [`GET /credit/v2/assets/{asset}/collateral/{chain}/{collateral}`](/api-reference/sprinter/credit/get-collateral-asset-details)   | Collateral asset details                                                                  |
| [`GET /credit/v2/accounts/{account}/assets/{asset}/operator`](/api-reference/sprinter/credit/get-operator-status-for-an-account) | Operator status for delegated draws                                                       |

### Actions

| Endpoint                                                                                                                         | Description                            |
| -------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------- |
| [`GET /credit/v2/accounts/{account}/assets/{asset}/lock`](/api-reference/sprinter/credit/calldata-to-lock-asset-as-collateral)   | Build calldata to lock collateral      |
| [`GET /credit/v2/accounts/{account}/assets/{asset}/unlock`](/api-reference/sprinter/credit/call-data-to-unlock-collateral)       | Build calldata to unlock collateral    |
| [`GET /credit/v2/accounts/{account}/assets/{asset}/draw`](/api-reference/sprinter/credit/build-transaction-calls-to-draw-credit) | Build calldata to draw (borrow) credit |
| [`GET /credit/v2/accounts/{account}/assets/{asset}/repay`](/api-reference/sprinter/credit/call-data-to-repay-credit-debt)        | Build calldata to repay debt           |

### Advanced

| Endpoint                                                                                                                                                        | Description                    |
| --------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------ |
| [`GET /credit/v2/accounts/{account}/assets/{asset}/operator/auto-topup/enable`](/api-reference/sprinter/credit/build-transaction-calls-to-enable-auto-top-up)   | Enable auto top-up             |
| [`GET /credit/v2/accounts/{account}/assets/{asset}/operator/auto-topup/disable`](/api-reference/sprinter/credit/build-transaction-calls-to-disable-auto-top-up) | Disable auto top-up            |
| [`GET /credit/earn/wrap`](/api-reference/sprinter/credit/wrap-asset-into-earn-vault)                                                                            | Wrap asset into earn vault     |
| [`GET /credit/earn/unwrap`](/api-reference/sprinter/credit/unwrap-position-from-earn-vault)                                                                     | Unwrap from earn vault         |
| [`GET /credit/earn/claim`](/api-reference/sprinter/credit/claim-position-from-earn-vault)                                                                       | Claim position from earn vault |

## Response Format

All transaction-building endpoints return unsigned calldata:

```json theme={null}
{
  "calls": [
    {
      "chain": "8453",
      "to": "0x...",
      "data": "0x...",
      "value": "0"
    }
  ]
}
```

Sign and broadcast each `ContractCall` in the user's wallet. No API keys needed for on-chain operations.