spot: add slippage

docs/spot.md

@@ -51,8 +51,10 @@ jup spot quote --from <mint> --to <mint> --raw-amount 1000000000
 ```bash
 jup spot swap --from SOL --to USDC --amount 1
 jup spot swap --from SOL --to USDC --amount 1 --key mykey
+jup spot swap --from SOL --to USDC --amount 1 --slippage 100
 ```
 
+- `--slippage <bps>` max slippage in basis points (default: 30 = 0.3%)
 - `--key` overrides the active key for this transaction
 
 ```js

src/clients/UltraClient.ts

@@ -8,6 +8,7 @@ type GetOrderRequest = {
   outputMint: string;
   amount: string;
   taker?: string | undefined;
+  slippageBps?: number | undefined;
 };
 
 export type GetOrderResponse = {

src/commands/SpotCommand.ts

@@ -48,6 +48,7 @@ export class SpotCommand {
         "--raw-amount <n>",
         "Amount in on-chain units (no decimal conversion)"
       )
+      .option("--slippage <bps>", "Max slippage in basis points", "30")
       .option("--key <name>", "Key to use for signing")
       .action((opts) => this.swap(opts));
     spot
@@ -200,10 +201,16 @@ export class SpotCommand {
     to: string;
     amount?: string;
     rawAmount?: string;
+    slippage?: string;
     key?: string;
   }): Promise<void> {
     this.validateAmountOpts(opts);
 
+    const slippageBps = Number(opts.slippage ?? "30");
+    if (isNaN(slippageBps) || slippageBps < 0 || slippageBps > 10000) {
+      throw new Error("--slippage must be 0-10000 (basis points)");
+    }
+
     const settings = Config.load();
     const [signer, inputToken, outputToken] = await Promise.all([
       Signer.load(opts.key ?? settings.activeKey),
@@ -224,6 +231,7 @@ export class SpotCommand {
           inputMultiplier
         ),
       taker: signer.address,
+      slippageBps,
     });
 
     if (order.error) {