Integration guide

apifare for Vercel AI SDK

Give Vercel AI SDK one prepaid key for every API it needs. There is no separate provider account or provider API key for eligible capabilities, and it all runs under hard caps and a kill switch.

Get a key

1 · Get a key

Create an account at /start: email in, token out (shown once). Save the token somewhere safe.

2 · Add apifare to Vercel AI SDK

Connect with createMCPClient from @ai-sdk/mcp (not the older experimental_createMCPClient from ai) and pass its tools to generateText. The token is read from the APIPAY_TOKEN environment variable and sent as an Authorization header.

npm i @ai-sdk/mcp ai zod

import { createMCPClient } from '@ai-sdk/mcp';
import { generateText, isStepCount } from 'ai';

const mcpClient = await createMCPClient({
  transport: {
    type: 'http',
    url: 'https://apifare.com/mcp',
    headers: { Authorization: `Bearer ${process.env.APIPAY_TOKEN}` },
  },
});

try {
  const tools = await mcpClient.tools();
  const { text } = await generateText({
    model: 'openai/gpt-5.4',
    tools,
    stopWhen: isStepCount(10),
    prompt: "What's the weather in London?",
  });
  console.log(text);
} finally {
  await mcpClient.close();
}

Set APIPAY_TOKEN, then run it as an ES module (for the top-level await). The finally block closes the client, as the AI SDK docs ask.

3 · Try it

Ask your AI SDK app to search the web for X, then to fetch a URL, then what's the weather in London. Every call is debited from your balance and lands on your signed, exportable audit chain.

4 · Stay in control

Set daily or monthly caps per agent, and keep the kill switch ready. Both are checked before a call is dispatched. When the balance runs out, your agent gets an HTTP 402 with a top-up link it can hand you; the error catalog lists every stop and what unblocks it.

What Vercel AI SDK can call

Everything on the key: search, filings, registries, weather, and ready-to-run tools, plus any provider key you vault yourself. Exact per-call prices are on /capabilities.

Config checked against Vercel AI SDK's MCP docs on 2026-09-13. Markdown version: /integrations/vercel-ai-sdk.md.

More integrations

Claude Code · Claude Desktop · Cursor · Windsurf · Zed · Cline · GitHub Copilot (VS Code) · OpenAI Codex CLI · Gemini CLI · Hermes Agent · Kimi CLI · Qwen Code · JetBrains (Junie) · Warp · Raycast · n8n · Dify · LangChain · LangGraph · CrewAI · LobeHub · AnythingLLM · OpenClaw · OpenAI Agents SDK · LlamaIndex · Mastra · Goose · LibreChat

Model guides

Calling a model's API directly instead? Give it apifare tools with a plain tool loop: DeepSeek · Kimi · Qwen · OpenAI GPT · Gemini.