Nexus Gateway TypeScript SDK

Native tool wrappers for LangChain.js and Vercel AI SDK — generate bilingual legal contracts, audited Solidity smart contracts, and Digital Twin v3.1 mapping.

Install

npm install nexus-gateway-sdk

# Optional peer dependencies:
npm install @langchain/core   # for LangChain.js tools
npm install ai                 # for Vercel AI SDK tools

Quick Start

Direct Client

import { NexusClient } from "nexus-gateway-sdk";

const client = new NexusClient({ clientId: "my-agent" });

// Free endpoints
const manifest = await client.getManifest();
const audit = await client.dryRun({
  sourceCode: "pragma solidity ^0.8.20; contract Token { }",
});

// Paid services (free trial available)
const result = await client.structuredData({
  schemaType: "erc20_metadata",
  name: "MyToken",
  symbol: "MTK",
  decimals: 18,
});

LangChain.js

import { createNexusTools } from "nexus-gateway-sdk/langchain";

const tools = createNexusTools({ clientId: "my-agent" });
// 5 tools: nexus_structured_data, nexus_code_modules, nexus_legal_code, nexus_dry_run, nexus_manifest
// Wrap with DynamicStructuredTool from @langchain/core/tools

Vercel AI SDK

import { createNexusVercelTools } from "nexus-gateway-sdk/langchain";
import { generateText } from "ai";

const tools = createNexusVercelTools({ clientId: "my-agent" });
const result = await generateText({
  model: openai("gpt-4"),
  tools,
  prompt: "Audit this contract: pragma solidity ^0.8.20; contract Token { }",
});

Available Tools

| Tool | Service | Cost | Auth | |---|---|---|---| | nexus_structured_data | structured_data | 20 CRED ($0.20) | Yes | | nexus_code_modules | code_modules | 120 CRED ($1.20) | Yes | | nexus_legal_code | legal_code | 29,900 CRED ($299.00) | Yes | | nexus_dry_run | dry-run | FREE | No | | nexus_manifest | manifest | FREE | No |

License

MIT