# Deno & Fetch

## Prepare Pool Delegation Transaction

**Payload**

{% code overflow="wrap" %}

```json
{
  "changeAddress": "addr_test1...",
  "delegations": [
    {
      "type": "pool",
      "address": "addr_test1...",
      "keyHash": "pool1z5uq..."
    }
  ]
}
```

{% endcode %}

### Example (using Deno & fetch)

*Using a preprod wallet all value needed for a delegation*

{% code overflow="wrap" %}

```typescript
const POOL_ID = "pool1n3sjq3qvu5vvcd6aud6ndcwq7r3ghmkafcg60gznlwfrk2ucxku";
const ADDR = "addr_test1qzyttcj6czjltcs3tn3vls6yg90542lctrzwg5aagduqlfgupztxhczzmuakzfuwvrht542yrx7ll3fk29lcl2xl8axqh3pjdh";
// See Authentication page for API key details.
const X_API_KEY = "testnet_EyrkvCWDZqjkfLSe1pxaF0hXxUcByHEhHuXIBjt9";
```

{% endcode %}

#### API POST Request Body

*Body Structure for a delegation to a pool using the previously collected values.*

```typescript
const BODY = {
  changeAddress: ADDR,
  delegations: [
    {
      type: "pool",
      address: ADDR,
      keyHash: POOL_ID,
    },
  ],
};
```

#### Fetch Command with Deno

POST call with Fetch

{% code overflow="wrap" %}

```typescript
const response = await fetch(
  `https://preprod.api.ada-anvil.app/v2/services/transactions/build`,
  {
    method: "POST",
    headers: { "Content-Type": "application/json", "x-api-key": X_API_KEY },
    body: JSON.stringify(BODY),
  }
);

console.log(await response.json());
```

{% endcode %}

### Deno Command

```bash
deno run --allow-net delegate-pool.ts
```

### Output

{% code overflow="wrap" %}

```json
{
  "hash": "a4633c716755a8d72d07c058ffabe94c9b8b0f8273a8d7babb1f607050fb3c3b",
  "complete": "84a700d90102828258203376a58b03a1a26108d79e3db28207d1e3b7db51266bb9d07691b3d724d8198201825820f4bf2eb3572ec503081a24baf506ee26f5a2ee8d5d6c707830b75516db9bb9ed020182a300581d60355efb09c4a29c7e3b63ead47a220efcbbdef1fd5369c4efff947b4b011a001dc130028201d8184a49616e76696c2d7461678258390088b5e25ac0a5f5e2115ce2cfc344415f4aabf858c4e453bd43780fa51c08966be042df3b61278e60eeba554419bdffc536517f8fa8df3f4c1a38227e99021a00032095031a053f215904d901028282008200581c1c08966be042df3b61278e60eeba554419bdffc536517f8fa8df3f4c83028200581c1c08966be042df3b61278e60eeba554419bdffc536517f8fa8df3f4c581c9c6120440ce518cc375de37536e1c0f0e28beedd4e11a7a053fb923b081a053f05390ed9010281581c355efb09c4a29c7e3b63ead47a220efcbbdef1fd5369c4efff947b4ba100d90102818258204bc7618201307ab45cdb3793107822c47230f097e9771fb358473cdb82b2e644584020ecc8e8a0b6d2f4a2bd51d388ee20abebf4982d55ce738d9b1c223bc77152fa175c15729e96073873d262017ea113ff41a8ec26a16441029f00fbf004229b07f5f6",
  "stripped": "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",
  "witnessSet": "a100d90102818258204bc7618201307ab45cdb3793107822c47230f097e9771fb358473cdb82b2e644584020ecc8e8a0b6d2f4a2bd51d388ee20abebf4982d55ce738d9b1c223bc77152fa175c15729e96073873d262017ea113ff41a8ec26a16441029f00fbf004229b07"
}
```

{% endcode %}

## The Whole File (Deno Version)

<details>

<summary>delegate-pool.ts</summary>

{% code overflow="wrap" %}

```typescript
const POOL_ID = "pool1n3sjq3qvu5vvcd6aud6ndcwq7r3ghmkafcg60gznlwfrk2ucxku";
const ADDR = "addr_test1qzj4p30l8kzrm95wmfuqh4spnvpvyjt4lyc8xj2mtl2xtrsqma6nh06158nvt3w9gf2xyl35h5csz5awufc6xtvpdhszkvcml";
// See Authentication page for API key details.
const X_API_KEY = "testnet_EyrkvCWDZqjkfLSe1pxaF0hXxUcByHEhHuXIBjt9";

const BODY = {
  changeAddress: ADDR,
  delegations: [
    {
      type: "pool",
      address: ADDR,
      keyHash: POOL_ID,
    },
  ],
};

const response = await fetch(
  `https://preprod.api.ada-anvil.app/v2/services/transactions/build`,
  {
    method: "POST",
    headers: { "Content-Type": "application/json", "x-api-key": X_API_KEY },
    body: JSON.stringify(BODY),
  }
);

console.log(await response.json());

export {};
```

{% endcode %}

</details>


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