> Solana Developer Platform docs, served as Markdown. The [docs index](https://platform-beta.solana.com/docs.md) lists every page and [llms.txt](https://platform-beta.solana.com/docs/ai/llms.txt) the key ones; [SKILL.md](https://platform-beta.solana.com/SKILL.md) has the rules for building on SDP.

# Preview a withdrawal request

Previews a withdrawal request: a solver queue's discounted payout and timing, or an operator redemption's intermediate-token conversion and payout.

> **Earn is under active development.** Features, API endpoints, and docs may change.

`POST /v1/earn/external-wallet/queued-withdrawal-previews`

Check the mechanism against the position's withdrawal options first, and resolve every `blockingIssues` entry before the customer confirms. The preview is read-only and safe to retry. It does not check the wallet's balance, so keep `shares` within the position's `withdrawableShares`.

Requires an [API key](/docs/developing-with-sdp/authentication) with the `earn.read` action.

## Headers

- **`x-project-id`** · `string` · min length 1 · example `prj_example`

  Required for dashboard sessions. API keys use their assigned project.

## Request body

`application/json` · required

Preview a solver-queue or operator-redemption request against live provider limits. Read-only: nothing is built or persisted.

Any of:

- **object**

  - **`positionId`** · `string` · required · min length 1 · max length 128 · example `earn_position_2f8b6b04-7147-487e-b760-b1caa4fbcb8b`

    The position's ID, from the positions list or the deposit submit response.

  - **`shares`** · `string` · required · max length 128 · pattern `^(?=.*[1-9])\d+(\.\d+)?$` · example `10`

    Shares to place in the withdrawal request, in share units.

  - **`mechanism`** · `string` · always `solverQueue`

    Selects the solver queue, which is also the default when omitted. Operator redemptions must set `mechanism` explicitly.

  - **`discountBps`** · `integer` · required · min 0 · max 10000 · example `25`

    Discount offered to a solver, in basis points. It must stay inside the live queueAsset minimum and maximum.

  - **`deadlineSeconds`** · `integer` · required · greater than 0 · max 7776000 · example `86400`

    Solver window after maturity, in seconds. It must stay inside the live queueAsset minimum and maximum.

- **object**

  - **`positionId`** · `string` · required · min length 1 · max length 128 · example `earn_position_2f8b6b04-7147-487e-b760-b1caa4fbcb8b`

    The position's ID, from the positions list or the deposit submit response.

  - **`shares`** · `string` · required · max length 128 · pattern `^(?=.*[1-9])\d+(\.\d+)?$` · example `10`

    Shares to place in the withdrawal request, in share units.

  - **`mechanism`** · `string` · required · always `operatorRedemption`

    Selects an operator redemption, which takes no solver discount or deadline.

- **object**

  - **`positionId`** · `string` · required · min length 1 · max length 128 · example `earn_position_2f8b6b04-7147-487e-b760-b1caa4fbcb8b`

    The position's ID, from the positions list or the deposit submit response.

  - **`intermediateAmount`** · `string` · required · max length 128 · pattern `^(?=.*[1-9])\d+(\.\d+)?$` · example `2000`

    Intermediate token the owner already holds outside any request (such as a cancelled request's wYLDS) to redeem at par, in that token's units. Send instead of `shares`, never with it.

  - **`mechanism`** · `string` · required · always `operatorRedemption`

    Selects an operator redemption, which takes no solver discount or deadline.

## Responses

- **`200`** Expected request terms

  - **`data`** · `object` · required

    Any of:

    - **object**

      - **`positionId`** · `string` · required · min length 1 · max length 128 · example `earn_position_2f8b6b04-7147-487e-b760-b1caa4fbcb8b`

        The position's ID, from the positions list or the deposit submit response.

      - **`assetMint`** · `string` · required · min length 32 · max length 44 · pattern `^[1-9A-HJ-NP-Za-km-z]{32,44}$` · example `2b1kV6DkPAnxd5ixfnxCpjxmKwqjjaYmCZfHsFu24GXo`

        Base58 Solana mint address.

      - **`shares`** · `string` · required · max length 128 · pattern `^(?=.*[1-9])\d+(\.\d+)?$` · example `25`

        Positive decimal string with at least one non-zero digit; never a float.

      - **`shareDecimals`** · `integer` · required · min 0 · max 38

      - **`assets`** · `string` · required · max length 128 · pattern `^(?=.*[1-9])\d+(\.\d+)?$` · example `9.975`

        Expected payout after the discount, in `assetMint` units.

      - **`assetDecimals`** · `integer` · required · min 0 · max 38

      - **`discountBps`** · `integer` · required · min 0 · max 10000

      - **`maturityTimestamp`** · `string` · required · pattern `^\d+$` · example `1789722000`

        Unix time, in seconds, when a solver may start fulfilling the request.

      - **`deadlineTimestamp`** · `string` · required · pattern `^\d+$` · example `1789808400`

        Unix time, in seconds, of the request's deadline. A solver may fulfill it until this time; cancellation is allowed only after it.

      - **`blockingIssues`** · `object[]` · required

        - **`code`** · `string` · required · example `SHARE_LOCKED`

        - **`message`** · `string` · required

    - **object**

      - **`positionId`** · `string` · required · min length 1 · max length 128 · example `earn_position_2f8b6b04-7147-487e-b760-b1caa4fbcb8b`

        The position's ID, from the positions list or the deposit submit response.

      - **`mechanism`** · `string` · required · always `operatorRedemption`

      - **`shares`** · `string` · required · max length 128 · pattern `^\d+(\.\d+)?$` · example `10`

        Position shares the request burns, in share units; "0" when it redeems intermediate the owner already holds.

      - **`shareDecimals`** · `integer` · required · min 0 · max 38

      - **`intermediateMint`** · `string` · required · min length 32 · max length 44 · pattern `^[1-9A-HJ-NP-Za-km-z]{32,44}$` · example `2b1kV6DkPAnxd5ixfnxCpjxmKwqjjaYmCZfHsFu24GXo`

        Token the request creates or delegates for later operator settlement.

      - **`intermediateAmount`** · `string` · required · max length 128 · pattern `^(?=.*[1-9])\d+(\.\d+)?$` · example `25`

        Expected intermediate-token amount, in that token's units.

      - **`assetMint`** · `string` · required · min length 32 · max length 44 · pattern `^[1-9A-HJ-NP-Za-km-z]{32,44}$` · example `2b1kV6DkPAnxd5ixfnxCpjxmKwqjjaYmCZfHsFu24GXo`

        Base58 Solana mint address.

      - **`assets`** · `string` · required · max length 128 · pattern `^(?=.*[1-9])\d+(\.\d+)?$` · example `10`

        Expected par payout when the operator completes the redemption.

      - **`assetDecimals`** · `integer` · required · min 0 · max 38

      - **`blockingIssues`** · `object[]` · required

        - **`code`** · `string` · required · example `SHARE_LOCKED`

        - **`message`** · `string` · required

  - **`meta`** · `object` · required

    Response metadata.

    - **`requestId`** · `string` · required · min length 1 · example `req_example`

      Request identifier for tracing.

    - **`timestamp`** · `string` · required · format `date-time` · example `2025-01-01T00:00:00.000Z`

      ISO 8601 timestamp.

- **`400`** Bad Request

  - **`error`** · `object` · required

    Standard error payload.

    - **`code`** · `string` · required

      Machine-readable error code.

    - **`message`** · `string` · required

      Human-readable error message.

    - **`details`** · `object`

      Optional error details for debugging.

      - **`*`** · `any`

  - **`meta`** · `object`

    - **`requestId`** · `string` · min length 1 · example `req_example`

      Request identifier for tracing.

- **`401`** Unauthorized

  Same fields as `400`.

- **`403`** Forbidden. Requires the `earn.read` action: an API key must hold it (a module's `manage` or `execute` also covers its `read`), and a signed-in member's organization role must include it. Without it the error is INSUFFICIENT_PERMISSIONS and `error.details.action` names the action. Any other 403 names its own reason.

  Same fields as `400`.

- **`404`** Not Found

  Same fields as `400`.

- **`429`** Too Many Requests

  Same fields as `400`.

- **`500`** Internal Server Error

  Same fields as `400`.

- **`501`** The provider does not support this operation.

  - **`error`** · `object` · required

    Standard error payload.

    - **`code`** · `string` · required

    - **`message`** · `string` · required

      Human-readable error message.

    - **`details`** · `object`

      Optional error details for debugging.

      - **`*`** · `any`

  - **`meta`** · `object`

    - **`requestId`** · `string` · min length 1 · example `req_example`

      Request identifier for tracing.

- **`503`** Service Unavailable

  Same fields as `400`.

## Example request

```bash tab="cURL"
curl -X POST 'https://api.solana.com/v1/earn/external-wallet/queued-withdrawal-previews' \
  -H "Authorization: Bearer $SDP_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "positionId": "earn_position_0432ffeb-c574-4b11-80dc-a09defb68fcc",
    "mechanism": "solverQueue",
    "shares": "15",
    "discountBps": 10,
    "deadlineSeconds": 60
  }'
```

```ts tab="TypeScript"
const res = await fetch("https://api.solana.com/v1/earn/external-wallet/queued-withdrawal-previews", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.SDP_API_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "positionId": "earn_position_0432ffeb-c574-4b11-80dc-a09defb68fcc",
    "mechanism": "solverQueue",
    "shares": "15",
    "discountBps": 10,
    "deadlineSeconds": 60
  })
});
```

```python tab="Python"
import os, requests

r = requests.post("https://api.solana.com/v1/earn/external-wallet/queued-withdrawal-previews",
  headers={"Authorization": f"Bearer {os.environ['SDP_API_KEY']}"},
  json={
    "positionId": "earn_position_0432ffeb-c574-4b11-80dc-a09defb68fcc",
    "mechanism": "solverQueue",
    "shares": "15",
    "discountBps": 10,
    "deadlineSeconds": 60
  })
```

## Example responses

```json tab="200"
{
  "data": {
    "positionId": "earn_position_0432ffeb-c574-4b11-80dc-a09defb68fcc",
    "assetMint": "4zMMC9srt5Ri5X14GAgXhaHii3GnPAEERYPJgZJDncDU",
    "shares": "15",
    "shareDecimals": 6,
    "assets": "14.985",
    "assetDecimals": 6,
    "discountBps": 10,
    "maturityTimestamp": "1793991049",
    "deadlineTimestamp": "1793991109",
    "blockingIssues": []
  },
  "meta": {
    "requestId": "req_example",
    "timestamp": "2025-01-01T00:00:00.000Z"
  }
}
```

```json tab="403"
{
  "error": {
    "code": "INSUFFICIENT_PERMISSIONS",
    "message": "Missing action: earn.read",
    "details": {
      "action": "earn.read"
    }
  },
  "meta": {
    "requestId": "req_example"
  }
}
```

Error responses use the [standard error shape](/docs/reference/conventions/errors).