@brew.new/sdk

Official TypeScript SDK for the Brew public API.

• Resource-oriented surface — brew.contacts.upsert(...) instead of raw HTTP plumbing.
• One typed error class (BrewApiError) for every non-2xx path.
• Safe retries with exponential backoff + jitter.
• Auto-generated Idempotency-Key on POST so retries never double-write.
• Node 20+, server-first. API keys are secrets — do not use this SDK directly in a browser.

Install

bun add @brew.new/sdk
# or
npm install @brew.new/sdk

Quick start

import { createBrewClient } from '@brew.new/sdk'

const brew = createBrewClient({
  apiKey: process.env.BREW_API_KEY!,
})

const contact = await brew.contacts.upsert({
  email: 'jane@example.com',
  firstName: 'Jane',
  customFields: { plan: 'enterprise' },
})

const found = await brew.contacts.getByEmail({ email: 'jane@example.com' })

That's the whole shape. Every other method follows the same pattern.

Pointing at a different environment

baseUrl is configurable. By default it points at production (https://brew.new/api), but you can override it for staging, local development, or a custom proxy:

const brew = createBrewClient({
  apiKey: process.env.BREW_API_KEY!,
  baseUrl: process.env.BREW_API_URL ?? 'https://brew.new/api',
})

Common values:

• https://brew.new/api — production (default)
• https://staging.brew.new/api — staging
• http://localhost:3000/api — your own dev server

Trailing slashes are normalized either way. See docs/configuration.md for the full list of config options (timeoutMs, maxRetries, userAgent, custom fetch, etc.).

Documentation

Topic	File
Client configuration	docs/configuration.md
Contacts resource	docs/contacts.md
Fields resource	docs/fields.md
Error handling	docs/errors.md
Retries + idempotency	docs/retries-and-idempotency.md
Development + OpenAPI sync	docs/development.md

Development

bun install
bun tsc         # typecheck
bun lint        # eslint
bun run format  # prettier
bun run test    # vitest — NOT `bun test`, that hits Bun's built-in runner and bypasses MSW setup
bun run build   # tsup: dist/ with esm + cjs + .d.ts

Full contribution + testing conventions live in AGENTS.md. The big one: every change is driven red → green via vitest + MSW, no exceptions for "trivial" pure functions.

License

MIT