Vercel AI SDK

npm install @seasonlabs/era-node ai

import { anthropic } from "@ai-sdk/anthropic";
import { Era } from "@seasonlabs/era-node";
import { withEra } from "@seasonlabs/era-node/ai-sdk";
import { streamText } from "ai";

const era = new Era({
  apiKey: process.env.ERA_API_KEY!,
  baseUrl: process.env.ERA_URL!,
  partnerId: process.env.ERA_PARTNER_ID!,
});

const model = withEra(anthropic("claude-sonnet-4-6"), era, {
  visitorId,
  sessionId,
});

const result = await streamText({
  model,
  messages,
});

import { wrapLanguageModel } from "ai";
import { eraMiddleware } from "@seasonlabs/era-node/ai-sdk";

const model = wrapLanguageModel({
  model: anthropic("claude-sonnet-4-6"),
  middleware: [
    loggingMiddleware(),
    eraMiddleware(era, { visitorId, sessionId }),
  ],
});