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

# Create a yield token

> Issue a pool-backed SPL token for a supported lending pool.

Creating a yield token turns a supported source pool into a transferable SPL asset.

## Before you create

Confirm that the source pool is appropriate:

* the pool is supported by an Overpass adapter
* deposits are not paused
* the pool has capacity
* the oracle is healthy
* the pool does not show severe withdrawal or bad-debt warnings
* the underlying mint is the asset you expect

You should also check whether a good existing wrapper already exists. Multiple yield tokens can reference the same source pool, but wallets and aggregators may prefer verified or canonical wrappers.

## Required fields

When creating a token, provide:

* source pool address
* source kind, such as `klend`, `kvault`, `save`, `lulo`, or `marginfi`
* underlying mint
* token name
* token symbol
* metadata URI
* creator deposit fee in basis points

The app can upload token image and JSON metadata to IPFS before creating the wrapper.

## Creator fee

Creators can set a deposit fee for the wrapper. The fee is charged on deposits and accumulates as pending creator fees.

The fee must be non-negative and cannot exceed the program's configured maximum creator deposit fee. The absolute maximum enforced by the SDK is 1000 basis points, or 10%.

Creator fees can be updated later by the creator.

## Initial deposit

An initial deposit is optional. If supplied, the wrapper is funded in the same transaction as creation.

Using an initial deposit is recommended when launching a public token because it gives the wrapper immediate backing and a clear initial NAV.

Some source pools have minimum deposit constraints. The app displays minimums when available and blocks below-minimum initial deposits.

## Create with the SDK

```ts theme={null}
import { createWrapper } from "@symmetry-hq/overpass";
import { PublicKey } from "@solana/web3.js";

const result = await createWrapper(connection, {
  creator: wallet.publicKey,
  source: new PublicKey("SOURCE_POOL_ADDRESS"),
  underlyingMint: new PublicKey("UNDERLYING_MINT"),
  name: "Wrapped Kamino USDC",
  symbol: "wkmUSDC",
  uri: "ipfs://metadata-json",
  creatorDepositFeeBps: 20,
  initialDeposit: {
    amount: 1_000_000n,
    minOut: 0n,
  },
});

const signed = await wallet.signTransaction(result.tx);
await connection.sendTransaction(signed);
```

## After creation

After the transaction confirms:

* the wrapper vault exists on-chain
* the yield-token mint exists
* the token metadata is attached
* the creator can claim future creator fees
* users can deposit into or withdraw from the yield token

Applications should index the new wrapper by wrapper mint, source pool, protocol, creator, and underlying mint.