feat: add 0x support (#255)

* Add 0x plugin

* Fix example

typescript/.changeset/eight-islands-march.md

@@ -0,0 +1,6 @@
+---
+"goat-examples-vercel-ai-viem": patch
+"@goat-sdk/plugin-0x": patch
+---
+
+Release 0x plugin

typescript/packages/plugins/0x/package.json

@@ -0,0 +1,32 @@
+{
+    "name": "@goat-sdk/plugin-0x",
+    "version": "0.1.0",
+    "files": ["dist/**/*", "README.md", "package.json"],
+    "scripts": {
+        "build": "tsup",
+        "clean": "rm -rf dist",
+        "test": "vitest run --passWithNoTests"
+    },
+    "main": "./dist/index.js",
+    "module": "./dist/index.mjs",
+    "types": "./dist/index.d.ts",
+    "sideEffects": false,
+    "homepage": "https://ohmygoat.dev",
+    "repository": {
+        "type": "git",
+        "url": "git+https://github.com/goat-sdk/goat.git"
+    },
+    "license": "MIT",
+    "bugs": {
+        "url": "https://github.com/goat-sdk/goat/issues"
+    },
+    "keywords": ["ai", "agents", "web3"],
+    "dependencies": {
+        "@goat-sdk/core": "workspace:*",
+        "zod": "catalog:",
+        "@goat-sdk/wallet-evm": "workspace:*"
+    },
+    "peerDependencies": {
+        "@goat-sdk/core": "workspace:*"
+    }
+}

typescript/packages/plugins/0x/src/0x.plugin.ts

@@ -0,0 +1,36 @@
+import { PluginBase } from "@goat-sdk/core";
+import { Chain } from "@goat-sdk/core";
+import { EVMWalletClient } from "@goat-sdk/wallet-evm";
+import { ZeroExService } from "./0x.service";
+
+export type ZeroExCtorParams = {
+    apiKey: string;
+};
+
+const supportedChains = [
+    "1",
+    "42161", // arbitrum
+    "43114", // avalanche
+    "8453", // base
+    "81457", // blast
+    "56", // bsc
+    "59144", // linea
+    "5000", // mantle
+    "34443", // mode
+    "10", // optimism
+    "137", // polygon
+    "534352", // scroll
+    "480", // worldcoin
+];
+
+export class ZeroExPlugin extends PluginBase<EVMWalletClient> {
+    constructor(params: ZeroExCtorParams) {
+        super("0x", [new ZeroExService(params.apiKey)]);
+    }
+
+    supportsChain = (chain: Chain) => chain.type === "evm" && supportedChains.includes(chain.id.toString());
+}
+
+export function zeroEx(params: ZeroExCtorParams) {
+    return new ZeroExPlugin(params);
+}

typescript/packages/plugins/0x/src/0x.service.ts

@@ -0,0 +1,67 @@
+import { Tool } from "@goat-sdk/core";
+import { EVMWalletClient } from "@goat-sdk/wallet-evm";
+import { GetQuoteParameters } from "./parameters";
+
+export class ZeroExService {
+    constructor(private readonly apiKey: string) {}
+
+    private async makeRequest(queryParams: Record<string, string | undefined>) {
+        const filteredParams = Object.fromEntries(
+            Object.entries(queryParams).filter(([_, v]) => v !== undefined),
+        ) as Record<string, string>;
+
+        const url = new URL(
+            `https://api.0x.org/swap/allowance-holder/quote?${new URLSearchParams(filteredParams).toString()}`,
+        );
+
+        const response = await fetch(url.toString(), {
+            method: "GET",
+            headers: {
+                "0x-api-key": this.apiKey,
+                "0x-version": "v2",
+            },
+        });
+
+        if (!response.ok) {
+            throw new Error(`Failed to fetch ${url}: ${JSON.stringify(await response.text(), null, 2)}`);
+        }
+
+        return response.json();
+    }
+
+    @Tool({
+        name: "0x_getQuote",
+        description: "Get a quote for a swap from 0x",
+    })
+    async getQuote(walletClient: EVMWalletClient, parameters: GetQuoteParameters) {
+        const queryParams = {
+            chainId: walletClient.getChain().id.toString(),
+            sellToken: parameters.sellToken,
+            buyToken: parameters.buyToken,
+            sellAmount: parameters.sellAmount,
+            taker: parameters.taker,
+            txOrigin: parameters.txOrigin,
+            slippageBps: parameters.slippageBps?.toString(),
+        };
+
+        return await this.makeRequest(queryParams);
+    }
+
+    @Tool({
+        name: "0x_swap",
+        description: "Swap tokens using 0x",
+    })
+    async swap(walletClient: EVMWalletClient, parameters: GetQuoteParameters) {
+        const quote = await this.getQuote(walletClient, parameters);
+
+        const transaction = quote.transaction;
+
+        const tx = await walletClient.sendTransaction({
+            to: transaction.to,
+            value: transaction.value,
+            data: transaction.data,
+        });
+
+        return tx.hash;
+    }
+}

typescript/packages/plugins/0x/src/index.ts

@@ -0,0 +1,2 @@
+export * from "./0x.plugin";
+export * from "./parameters";

typescript/packages/plugins/0x/src/parameters.ts

@@ -0,0 +1,26 @@
+import { createToolParameters } from "@goat-sdk/core";
+import { z } from "zod";
+
+export class GetQuoteParameters extends createToolParameters(
+    z.object({
+        chainId: z.number().describe("The chain ID to swap on"),
+        sellToken: z.string().describe("The token to sell"),
+        buyToken: z.string().describe("The token to buy"),
+        sellAmount: z.string().describe("The amount of tokens to sell in base units"),
+        taker: z
+            .string()
+            .describe("The address which holds the sellToken balance and has the allowance set for the swap"),
+        txOrigin: z
+            .string()
+            .optional()
+            .describe(
+                "The contract address of the external account that started the transaction. This is only needed if taker is a smart contract.",
+            ),
+        slippageBps: z
+            .number()
+            .optional()
+            .describe(
+                "The maximum acceptable slippage of the buyToken in Bps. If this parameter is set to 0, no slippage will be tolerated. If not provided, the default slippage tolerance is 100Bps",
+            ),
+    }),
+) {}

typescript/packages/plugins/0x/tsconfig.json

@@ -0,0 +1,6 @@
+{
+    "$schema": "https://json.schemastore.org/tsconfig",
+    "extends": "../../../tsconfig.base.json",
+    "include": ["src/**/*"],
+    "exclude": ["node_modules", "dist"]
+}

typescript/packages/plugins/0x/tsup.config.ts

@@ -0,0 +1,6 @@
+import { defineConfig } from "tsup";
+import { treeShakableConfig } from "../../../tsup.config.base";
+
+export default defineConfig({
+    ...treeShakableConfig,
+});

typescript/packages/plugins/0x/turbo.json

@@ -0,0 +1,11 @@
+{
+    "$schema": "https://turbo.build/schema.json",
+    "extends": ["//"],
+    "tasks": {
+        "build": {
+            "inputs": ["src/**", "tsup.config.ts", "!./**/*.test.{ts,tsx}", "tsconfig.json"],
+            "dependsOn": ["^build"],
+            "outputs": ["dist/**"]
+        }
+    }
+}

typescript/scripts/createPlugin.ts

@@ -25,9 +25,9 @@ function validatePluginName(name: string): boolean {
 function getWalletClientImport(type: PluginOptions["type"]): string {
     switch (type) {
         case "evm":
-            return 'import type { EVMWalletClient } from "@goat-sdk/wallet-evm";';
+            return 'import { EVMWalletClient } from "@goat-sdk/wallet-evm";';
         case "solana":
-            return 'import type { SolanaWalletClient } from "@goat-sdk/wallet-solana";';
+            return 'import { SolanaWalletClient } from "@goat-sdk/wallet-solana";';
         case "any":
             return 'import { WalletClientBase } from "@goat-sdk/core";';
     }