Anvia Docs

Vercel AI Gateway exposes an OpenAI-compatible API at https://ai-gateway.vercel.sh/v1.

Create the Client

import { AgentBuilder } from "@anvia/core";
import { OpenAIClient } from "@anvia/openai";

const client = new OpenAIClient({
  baseUrl: "https://ai-gateway.vercel.sh/v1",
  apiKey: process.env.AI_GATEWAY_API_KEY,
});

const model = client.completionModel("anthropic/claude-sonnet-4.6");

const agent = new AgentBuilder("support", model)
  .instructions("Answer support questions clearly.")
  .build();

const response = await agent.prompt("Hello!").send();

console.log(response.output);

Use Vercel AI Gateway model ids directly, usually in provider/model form.

Get the Model List

Vercel AI Gateway supports GET /models on its OpenAI-compatible API.

const models = await client.listModels();

console.table(models.data.map((model) => ({ id: model.id, owner: model.ownedBy })));

Notes

Vercel AI Gateway can route across providers and models behind one API key.
Provider options, fallbacks, attachments, and model-specific behavior still depend on the selected gateway model.
If you use Vercel OIDC instead of an API key, pass the token through your application configuration as apiKey.

For current Vercel AI Gateway details, see the OpenAI-compatible API documentation.