agentsvc (JavaScript)

Pay-per-call tools for AI agents from agentsvc.io: 120+ web, data and crypto APIs (web scraping to Markdown, token safety checks, smart-money tracking, agent memory and inbox, PDF and OCR, company data, and more), paid per call in USDC via x402. No account, no subscription. Ready-made tools for the Vercel AI SDK and LangChain.js.

npm i agentsvc
npm i @x402/fetch @x402/evm viem   # only if your agent pays from its own wallet

Pay

• Credit token: buy one at https://agentsvc.io/credits (from $0.10, +10% bonus), then createAgentsvc({ creditToken: 'asvc_cr_...' }) or set AGENTSVC_CREDIT_TOKEN.
• Wallet: createAgentsvc({ privateKey: '0x...', network: 'eip155:8453' }) with a few dollars of USDC on Base, Polygon (eip155:137) or Arbitrum (eip155:42161). Use a separate low-balance wallet.
• Your own x402 fetch: createAgentsvc({ payFetch }).
• Neither: client.sample('web-scrape') runs the free example of any service.

import { createAgentsvc } from 'agentsvc';

const svc = createAgentsvc({ creditToken: process.env.AGENTSVC_CREDIT_TOKEN });
const page = await svc.call('web-scrape', { url: 'https://example.com' });
const check = await svc.call('token-precheck', { tokens: ['0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed'], chain: 'base' });

Vercel AI SDK

import { generateText, isStepCount } from 'ai';
import { createAgentsvc } from 'agentsvc';
import { agentsvcTools } from 'agentsvc/ai-sdk';

const tools = await agentsvcTools(createAgentsvc({ creditToken: process.env.AGENTSVC_CREDIT_TOKEN }), ['web-scrape', 'news-search', 'token-smart-money']);
// Full guide: https://agentsvc.io/docs/ai-sdk
const { text } = await generateText({ model: 'anthropic/claude-haiku-5.5', tools, stopWhen: isStepCount(5), prompt: 'Who is buying BRETT on Base right now?' });

LangChain.js

import { createAgentsvc } from 'agentsvc';
import { agentsvcLangChainTools } from 'agentsvc/langchain';

const tools = await agentsvcLangChainTools(createAgentsvc({ creditToken: process.env.AGENTSVC_CREDIT_TOKEN }), { category: 'web' });
// createReactAgent({ llm, tools }) or llm.bindTools(tools)

Pick services by slug list, { category: 'finance' } or a filter function. The full list with prices: https://agentsvc.io/api/v1/services. Failed calls are never charged; errors throw AgentsvcError with status and body.

MIT licensed. The service itself runs at agentsvc.io and is not open source.