> For the complete documentation index, see [llms.txt](https://docs.surged.fun/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.surged.fun/integration/sdk.md).

# SDK

[`@surged/sdk`](https://www.npmjs.com/package/@surged/sdk) is the TypeScript package behind surged.fun: the exact pricing formula of the contracts, the calldata encoders and the generated ABIs. You price a trade locally, build the transaction with the package and sign it with the wallet library you already use.

```sh
npm add @surged/sdk viem
```

## In this section

| Page                                               | What it covers                                                        |
| -------------------------------------------------- | --------------------------------------------------------------------- |
| [Installation](/integration/sdk/installation.md)   | What the package contains, amounts as `bigint` and how versions work. |
| [Quoting a trade](/integration/sdk/quoting.md)     | Pricing buys and sells locally, slippage and simulating a sequence.   |
| [Buying and selling](/integration/sdk/trading.md)  | Sending trades, gas and confirming them.                              |
| [Launching a token](/integration/sdk/launching.md) | Launch terms, a launch with a first buy and bundles.                  |
| [Handling errors](/integration/sdk/errors.md)      | The revert codes you will hit and how to decode them.                 |

New to the package? The [Quickstart](/integration/quickstart.md) buys a token end to end in one script.


---

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