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feat: Add Nebula AI chat and transaction execution API
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‎.changeset/warm-dodos-destroy.md‎

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---
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"thirdweb": minor
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---
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Introducing Nebula API
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You can now chat with Nebula and ask it to execute transactions with your wallet.
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Ask questions about real time blockchain data.
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```ts
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import { Nebula } from "thirdweb/ai";
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const response = await Nebula.chat({
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client: TEST_CLIENT,
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prompt:
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"What's the symbol of this contract: 0xe2cb0eb5147b42095c2FfA6F7ec953bb0bE347D8",
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context: {
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chains: [sepolia],
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},
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});
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console.log("chat response:", response.message);
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```
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Ask it to execute transactions with your wallet.
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```ts
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import { Nebula } from "thirdweb/ai";
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const wallet = createWallet("io.metamask");
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const account = await wallet.connect({ client });
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const result = await Nebula.execute({
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client,
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prompt: "send 0.0001 ETH to vitalik.eth",
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account,
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context: {
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chains: [sepolia],
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},
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});
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console.log("executed transaction:", result.transactionHash);
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```

‎apps/portal/src/app/references/components/TDoc/utils/getSidebarLinkgroups.ts‎

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"@modules": "Modules",
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"@client": "Client",
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"@account": "Account",
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"@nebula": "Nebula",
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} as const;
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type TagKey = keyof typeof tagsToGroup;
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"@utils",
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"@others",
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"@account",
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"@nebula",
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];
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function findTag(

‎packages/thirdweb/package.json‎

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"import": "./dist/esm/exports/social.js",
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"default": "./dist/cjs/exports/social.js"
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},
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"./ai": {
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"types": "./dist/types/exports/ai.d.ts",
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"import": "./dist/esm/exports/ai.js",
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"default": "./dist/cjs/exports/ai.js"
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},
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"./package.json": "./package.json"
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},
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"typesVersions": {
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"*": {
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"adapters/*": [
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"./dist/types/exports/adapters/*.d.ts"
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],
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"auth": [
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"./dist/types/exports/auth.d.ts"
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],
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"chains": [
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"./dist/types/exports/chains.d.ts"
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],
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"contract": [
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"./dist/types/exports/contract.d.ts"
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],
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"deploys": [
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"./dist/types/exports/deploys.d.ts"
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],
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"event": [
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"./dist/types/exports/event.d.ts"
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],
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"extensions/*": [
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"./dist/types/exports/extensions/*.d.ts"
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],
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"pay": [
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"./dist/types/exports/pay.d.ts"
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],
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"react": [
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"./dist/types/exports/react.d.ts"
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],
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"react-native": [
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"./dist/types/exports/react-native.d.ts"
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],
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"rpc": [
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"./dist/types/exports/rpc.d.ts"
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],
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"storage": [
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"./dist/types/exports/storage.d.ts"
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],
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"transaction": [
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"./dist/types/exports/transaction.d.ts"
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],
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"utils": [
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"./dist/types/exports/utils.d.ts"
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],
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"wallets": [
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"./dist/types/exports/wallets.d.ts"
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],
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"wallets/*": [
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"./dist/types/exports/wallets/*.d.ts"
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],
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"modules": [
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"./dist/types/exports/modules.d.ts"
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],
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"social": [
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"./dist/types/exports/social.d.ts"
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]
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"adapters/*": ["./dist/types/exports/adapters/*.d.ts"],
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"auth": ["./dist/types/exports/auth.d.ts"],
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"chains": ["./dist/types/exports/chains.d.ts"],
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"contract": ["./dist/types/exports/contract.d.ts"],
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"deploys": ["./dist/types/exports/deploys.d.ts"],
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"event": ["./dist/types/exports/event.d.ts"],
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"extensions/*": ["./dist/types/exports/extensions/*.d.ts"],
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"pay": ["./dist/types/exports/pay.d.ts"],
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"react": ["./dist/types/exports/react.d.ts"],
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"react-native": ["./dist/types/exports/react-native.d.ts"],
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"rpc": ["./dist/types/exports/rpc.d.ts"],
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"storage": ["./dist/types/exports/storage.d.ts"],
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"transaction": ["./dist/types/exports/transaction.d.ts"],
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"utils": ["./dist/types/exports/utils.d.ts"],
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"wallets": ["./dist/types/exports/wallets.d.ts"],
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"wallets/*": ["./dist/types/exports/wallets/*.d.ts"],
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"modules": ["./dist/types/exports/modules.d.ts"],
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"social": ["./dist/types/exports/social.d.ts"],
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"ai": ["./dist/types/exports/ai.d.ts"]
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}
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},
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"browser": {

‎packages/thirdweb/scripts/typedoc.mjs‎

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"src/extensions/modules/**/index.ts",
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"src/adapters/eip1193/index.ts",
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"src/wallets/smart/presets/index.ts",
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"src/ai/index.ts",
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],
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exclude: [
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"src/exports/*.native.ts",

‎packages/thirdweb/src/ai/chat.test.ts‎

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import { describe, expect, it } from "vitest";
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import { TEST_CLIENT } from "../../test/src/test-clients.js";
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import { TEST_ACCOUNT_A, TEST_ACCOUNT_B } from "../../test/src/test-wallets.js";
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import { sepolia } from "../chains/chain-definitions/sepolia.js";
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import * as Nebula from "./index.js";
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describe.runIf(process.env.TW_SECRET_KEY)("chat", () => {
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it("should respond with a message", async () => {
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const response = await Nebula.chat({
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client: TEST_CLIENT,
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prompt: `What's the symbol of this contract: 0xe2cb0eb5147b42095c2FfA6F7ec953bb0bE347D8`,
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context: {
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chains: [sepolia],
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},
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});
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expect(response.message).toContain("CAT");
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});
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it("should respond with a transaction", async () => {
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const response = await Nebula.chat({
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client: TEST_CLIENT,
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prompt: `send 0.0001 ETH on sepolia to ${TEST_ACCOUNT_B.address}`,
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account: TEST_ACCOUNT_A,
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context: {
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chains: [sepolia],
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walletAddresses: [TEST_ACCOUNT_A.address],
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},
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});
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expect(response.transactions.length).toBe(1);
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});
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});

‎packages/thirdweb/src/ai/chat.ts‎

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import { type Input, type Output, nebulaFetch } from "./common.js";
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/**
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* Chat with Nebula.
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*
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* @param input - The input for the chat.
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* @returns The chat response.
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* @beta
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* @nebula
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*
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* @example
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* ```ts
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* import { Nebula } from "thirdweb/ai";
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*
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* const response = await Nebula.chat({
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* client: TEST_CLIENT,
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* prompt: "What's the symbol of this contract: 0xe2cb0eb5147b42095c2FfA6F7ec953bb0bE347D8",
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* context: {
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* chains: [sepolia],
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* },
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* });
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* ```
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*/
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export async function chat(input: Input): Promise<Output> {
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return nebulaFetch("chat", input);
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}

‎packages/thirdweb/src/ai/common.ts‎

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import type { Chain } from "../chains/types.js";
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import { getCachedChain } from "../chains/utils.js";
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import type { ThirdwebClient } from "../client/client.js";
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import {
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type PreparedTransaction,
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prepareTransaction,
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} from "../transaction/prepare-transaction.js";
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import type { Address } from "../utils/address.js";
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import { toBigInt } from "../utils/bigint.js";
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import type { Hex } from "../utils/encoding/hex.js";
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import { getClientFetch } from "../utils/fetch.js";
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import type { Account } from "../wallets/interfaces/wallet.js";
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const NEBULA_API_URL = "https://nebula-api.thirdweb.com";
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export type Input = {
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client: ThirdwebClient;
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prompt: string | string[];
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account?: Account;
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context?: {
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chains?: Chain[];
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walletAddresses?: string[];
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contractAddresses?: string[];
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};
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sessionId?: string;
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};
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export type Output = {
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message: string;
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sessionId: string;
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transactions: PreparedTransaction[];
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};
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type ApiResponse = {
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message: string;
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session_id: string;
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actions?: {
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type: "init" | "presence" | "sign_transaction";
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source: string;
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data: string;
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}[];
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};
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export async function nebulaFetch(
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mode: "execute" | "chat",
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input: Input,
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): Promise<Output> {
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const fetch = getClientFetch(input.client);
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const response = await fetch(`${NEBULA_API_URL}/${mode}`, {
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method: "POST",
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headers: {
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"Content-Type": "application/json",
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},
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body: JSON.stringify({
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message: input.prompt, // TODO: support array of messages
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session_id: input.sessionId,
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...(input.account
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? {
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execute_config: {
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mode: "client",
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signer_wallet_address: input.account.address,
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},
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}
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: {}),
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...(input.context
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? {
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context_filter: {
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chain_ids:
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input.context.chains?.map((c) => c.id.toString()) || [],
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signer_wallet_address: input.context.walletAddresses || [],
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contract_addresses: input.context.contractAddresses || [],
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},
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}
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: {}),
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}),
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});
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if (!response.ok) {
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const error = await response.text();
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throw new Error(`Nebula API error: ${error}`);
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}
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const data = (await response.json()) as ApiResponse;
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// parse transactions if present
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let transactions: PreparedTransaction[] = [];
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if (data.actions) {
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transactions = data.actions
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.map((action) => {
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// only parse sign_transaction actions
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if (action.type === "sign_transaction") {
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const tx = JSON.parse(action.data) as {
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chainId: number;
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to: Address | undefined;
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value: Hex;
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data: Hex;
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};
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return prepareTransaction({
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chain: getCachedChain(tx.chainId),
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client: input.client,
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to: tx.to,
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value: tx.value ? toBigInt(tx.value) : undefined,
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data: tx.data,
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});
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}
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return undefined;
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})
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.filter((tx) => tx !== undefined);
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}
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return {
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message: data.message,
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sessionId: data.session_id,
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transactions,
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};
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}

‎packages/thirdweb/src/ai/execute.test.ts‎

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import { describe, expect, it } from "vitest";
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import { TEST_CLIENT } from "../../test/src/test-clients.js";
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import { TEST_ACCOUNT_A, TEST_ACCOUNT_B } from "../../test/src/test-wallets.js";
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import { sepolia } from "../chains/chain-definitions/sepolia.js";
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import { getContract } from "../contract/contract.js";
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import * as Nebula from "./index.js";
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describe("execute", () => {
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it("should execute a tx", async () => {
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await expect(
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Nebula.execute({
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client: TEST_CLIENT,
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prompt: `send 0.0001 ETH to ${TEST_ACCOUNT_B.address}`,
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account: TEST_ACCOUNT_A,
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context: {
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chains: [sepolia],
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walletAddresses: [TEST_ACCOUNT_A.address],
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},
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}),
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).rejects.toThrow(/insufficient funds for gas/); // shows that the tx was sent
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});
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// TODO make this work reliably
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it.skip("should execute a contract call", async () => {
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const nftContract = getContract({
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client: TEST_CLIENT,
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chain: sepolia,
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address: "0xe2cb0eb5147b42095c2FfA6F7ec953bb0bE347D8",
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});
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const response = await Nebula.execute({
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client: TEST_CLIENT,
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prompt: `approve 1 token of token id 0 to ${TEST_ACCOUNT_B.address} using the approve function`,
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account: TEST_ACCOUNT_A,
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context: {
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chains: [nftContract.chain],
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walletAddresses: [TEST_ACCOUNT_A.address],
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contractAddresses: [nftContract.address],
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},
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});
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expect(response.transactionHash).toBeDefined();
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});
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});

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