# TypeScript

> Node examples with @anthropic-ai/sdk and openai, including streaming.

_Source: https://aiprimetech.io/docs/sdks/typescript/ · Home > Docs > SDKs_


## Anthropic SDK

```bash
npm install @anthropic-ai/sdk
```

```typescript
import Anthropic from "@anthropic-ai/sdk";

const client = new Anthropic({
  apiKey: process.env.CLAUDEAPIKEY!,
  baseURL: "https://aiprimetech.io",            // no /v1
});

const msg = await client.messages.create({
  model: "claude-sonnet-4-6",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Explain event loops briefly." }],
});

const block = msg.content[0];
if (block.type === "text") console.log(block.text);
```

> `content` is a discriminated union. Narrow on `block.type === "text"` rather than indexing blindly — a tool-use reply has no `.text` and will be `undefined` at runtime.


## Streaming

```typescript
const stream = await client.messages.stream({
  model: "claude-sonnet-4-6",
  max_tokens: 1024,
  messages: [{ role: "user", content: "Count to five." }],
});

for await (const event of stream) {
  if (event.type === "content_block_delta" && event.delta.type === "text_delta") {
    process.stdout.write(event.delta.text);
  }
}
const final = await stream.finalMessage();
console.log(final.usage);
```


## OpenAI SDK

```typescript
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.CLAUDEAPIKEY!,
  baseURL: "https://aiprimetech.io/v1",         // with /v1
});

const r = await client.chat.completions.create({
  model: "claude-sonnet-4-6",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(r.choices[0].message.content);
```

> Never ship a key in browser-side code. Call the gateway from your server and expose your own endpoint to the front end — anything in a bundle is public.

- [Chat Completions](https://aiprimetech.io/docs/api-reference/chat-completions/) — OpenAI-format reference
- [Best practices](https://aiprimetech.io/docs/guides/best-practices/) — Production concerns


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_ClaudeAPIKey.dev is an independently operated, Anthropic-compatible API gateway. Not affiliated with Anthropic._