# spark\_flashnet\_signIntent

Use the `spark_flashnet_signIntent` method to request a **signed Flashnet intent** from the user’s Spark wallet.\
An intent describes a Flashnet action (swap, liquidity, or pool creation).\
The wallet serializes the intent, shows the user a clear review screen, and signs it with their Spark key.

## Parameters

```ts
{
  "type": "executeSwap" 
        | "executeRouteSwap"
        | "createConstantProductPool"
        | "createSingleSidedPool"
        | "confirmInitialDeposit"
        | "addLiquidity"
        | "removeLiquidity"
        | "clawback",
  "data": { /* intent-specific fields */ }
}
```

## Supported Intents & Examples

### **🔄 Swaps**

* **`executeSwap`**\
  Based on [Flashnet Execute Swap](https://docs.flashnet.xyz/api-reference/swaps/execute-swap).

  ```json
  {
    "type": "executeSwap",
    "data": {
      "userPublicKey": "02abcdef...",
      "poolId": "03aabb...",
      "transferId": "spark-transfer-123",
      "assetInAddress": "03bitcoinassetpubkey...",
      "assetOutAddress": "03usdstablecoinpubkey...",
      "amountIn": "100000000",
      "maxSlippageBps": 50,
      "minAmountOut": "99500000",
      "totalIntegratorFeeRateBps": 100,
      "nonce": "unique-swap-nonce-123"
    }
  }
  ```
* **`executeRouteSwap`**\
  Based on [Flashnet Route Swap](https://docs.flashnet.xyz/api-reference/swaps/execute-route-swap).

  ```json
  {
    "type": "executeRouteSwap",
    "data": {
      "userPublicKey": "02abcdef...",
      "initialSparkTransferId": "spark-route-transfer-123456",
      "hops": [
        {
          "poolId": "03pool1...",
          "inputAssetAddress": "03bitcoinassetpubkey...",
          "outputAssetAddress": "03ethereumassetpubkey...",
          "hopIntegratorFeeRateBps": 25
        },
        {
          "poolId": "03pool2...",
          "inputAssetAddress": "03ethereumassetpubkey...",
          "outputAssetAddress": "03usdstablecoinpubkey...",
          "hopIntegratorFeeRateBps": 25
        }
      ],
      "inputAmount": "100000000",
      "maxRouteSlippageBps": 200,
      "minAmountOut": "99500000",
      "defaultIntegratorFeeRateBps": 50,
      "nonce": "unique-route-swap-nonce-789"
    }
  }

  ```

### **🚀 Token Launch** 

* `createConstantProductPool`\
  Based on Flashnet [Create Constant Product Pool](https://docs.flashnet.xyz/api-reference/pools/create-cp-pool).

  ```json
  {
    "type": "createConstantProductPool",
    "data": {
      "poolOwnerPublicKey": "03b06b7c...",
      "assetAAddress": "0338d697...",
      "assetBAddress": "02020202...",
      "lpFeeRateBps": 300,
      "totalHostFeeRateBps": 200,
      "nonce": "550e8400..."
    }
  }

  ```
* `createSingleSidedPool`\
  Based on Flashnet [Create Bonding Pool](https://docs.flashnet.xyz/api-reference/pools/create-bonding-pool).

  ```json
  {
    "type": "createSingleSidedPool",
    "data": {
      "assetAAddress": "0338d697...",
      "assetBAddress": "02020202...",
      "assetAInitialReserve": "1000000000",
      "virtualReserveA": "0",
      "virtualReserveB": "0",
      "threshold": "5000000000",
      "lpFeeRateBps": 500,
      "totalHostFeeRateBps": 200,
      "poolOwnerPublicKey": "03b06b7c...",
      "nonce": "550e8400..."
    }
  }

  ```
* `confirmInitialDeposit`\
  Based on Flashnet [Confirm Initial Deposit](https://docs.flashnet.xyz/api-reference/pools/confirm-initial-deposit).

  ```json
  {
    "type": "confirmInitialDeposit",
    "data": {
      "poolId": "03poollp...",
      "assetASparkTransferId": "spark-transfer-uuid...",
      "poolOwnerPublicKey": "03b06b7c...",
      "nonce": "confirm-deposit-nonce-789"
    }
  }
  ```

### **💧 Liquidity**

* **`addLiquidity`**\
  Based on Flashnet [Add Liquidity](https://docs.flashnet.xyz/api-reference/liquidity/add-liquidity).

  ```json
  {
    "type": "addLiquidity",
    "data": {
      "userPublicKey": "03abcdef...",
      "poolId": "03aabb...",
      "assetAAmount": "100000000",
      "assetBAmount": "50000",
      "assetAMinAmountIn": "95000000",
      "assetBMinAmountIn": "45000",
      "assetATransferId": "spark-transfer-a-123",
      "assetBTransferId": "spark-transfer-b-456",
      "nonce": "add-liquidity-1702934567890"
    }
  }
  ```
* **`removeLiquidity`**\
  Based on [Remove Liquidity](https://docs.flashnet.xyz/api-reference/liquidity/remove-liquidity).

  ```json
  {
    "type": "removeLiquidity",
    "data": {
      "userPublicKey": "03abcdef...",
      "poolId": "03aabb...",
      "lpTokensToRemove": "12340000",
      "nonce": "remove-liquidity-nonce-789"
    }
  }
  ```
* **`clawback`**\
  Based on Flashnet [Clawback Funds](https://docs.flashnet.xyz/api-reference/clawback/clawback-funds).

  ```json
  {
    "type": "clawback",
    "data": {
      "senderPublicKey": "02abcdef...",
      "sparkTransferId": "550e8400...",
      "lpIdentityPublicKey": "03aabb...",
      "nonce": "clawback-nonce-123456"
    }
  }
  ```

***

## Response

### :white\_check\_mark: Success

On success, the method resolves to the signed intent:

```json
{
  "intent": "<serialized-intent>",
  "signature": "<spark-signature>"
}
```

* **`intent`** — the full serialized Flashnet intent
* **`signature`** — signature from the user’s Spark identity key

### :x: Error

On error, the method rejects with an error object:

```json
{
  "errorCode": "INTENT-VALIDATION-001",
  "message": "Invalid or unsupported intent type: createXYZPool",
  "requestId": "01HJZKFABCDEFGHJKLMNPQRSTVW"
}
```

Common failure cases include:

* **Malformed request** (missing required fields like `poolId` or `assetInAddress`)
* **Unsupported type** (intent type not recognized)
* **Invalid values** (negative amounts, bad public key format, etc.)
* **Wallet-level rejection** (user cancels the request)

These errors are surfaced as standard Sats Connect errors for your App to handle.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.xverse.app/sats-connect/spark-methods/flashnet-trading/spark_flashnet_signintent.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.