BrainstormRouter TypeScript SDK

Drop-in replacement for the OpenAI SDK with intelligent routing, memory, guardrails, and governance across 247 model endpoints.

Install

npm install brainstormrouter

Quick Start

import BrainstormRouter from "brainstormrouter";

const client = new BrainstormRouter({ apiKey: "brk_..." });

// OpenAI-compatible — works with LangChain, Vercel AI SDK, CrewAI, etc.
const response = await client.chat.completions.create({
  model: "anthropic/claude-sonnet-4",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(response.choices[0].message.content);

Use "auto" as the model to let BrainstormRouter's Thompson sampling pick the best model for your request:

const response = await client.chat.completions.create({
  model: "auto",
  messages: [{ role: "user", content: "Explain quantum computing" }],
});

Streaming

const stream = await client.chat.completions.create({
  model: "auto",
  messages: [{ role: "user", content: "Write a poem" }],
  stream: true,
});

for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content ?? "");
}

Memory (4-Block RMM)

// Append a memory entry
await client.memory.append("User prefers concise answers", {
  block: "semantic",
});

// List memory entries
const { entries } = await client.memory.entries();

// List memory blocks with entry counts
const { blocks } = await client.memory.blocks();

// Bootstrap memory from documents
await client.memory.init([{ content: "Product requirements doc...", source: "prd.md" }]);

Guardrails

// Test content against guardrail pipeline
const result = await client.guardrails.test({
  content: "Check this message for PII",
  direction: "inbound",
});

Provider Keys (BYOK)

// Register your own provider key
await client.providers.register("anthropic", {
  apiKey: "sk-ant-...",
});

// Validate a key with a live request
const result = await client.providers.test("anthropic", "sk-ant-...");

Prompt Management

// Create a versioned prompt template
const prompt = await client.prompts.create({
  name: "customer-support",
  template: "You are a helpful support agent for {{company}}.",
  variables: ["company"],
});

// Test a prompt
const result = await client.prompts.test(prompt.id, {
  variables: { company: "Acme Corp" },
});

Configuration

const client = new BrainstormRouter({
  apiKey: "brk_...", // or set BRAINSTORMROUTER_API_KEY env var
  baseURL: "https://api.brainstormrouter.com", // default
  maxEstimatedCost: 0.1, // Guardian: cap cost per request
  guardianOff: false, // disable Guardian Intelligence
});

Resources

• Documentation
• API Reference
• Full API Reference (llms-full.txt)
• GitHub
• Dashboard

License

MIT