Transparent Routing

Know Exactly Where Your Request Goes

Every response tells you which provider handled your request. Direct connections only — no aggregators, no middlemen, no black boxes.

Get Started See How It Works

The Industry Has a Trust Problem

Most API gateways route through chains of aggregators. You never know who actually served your request.

Typical API Proxy

Your App

Proxyunknown

Aggregatorcached?

Sub-aggregatorwhich model?

???

Provider

TheRouter

Your App

TheRouterverified

Provider (Direct API)x-router headers

Three Pillars of Transparency

aggregators

Direct Connections Only

We connect to Anthropic, OpenAI, Google, AWS Bedrock directly. No middlemen reselling API access.

Every provider is a first-party API connection
No resold, cached, or proxied responses
Your data touches only you and the model vendor

x-router-* headers

Verifiable Response Headers

Every API response carries headers that tell you exactly what happened: which model, which provider, whether a fallback fired, and how long the upstream took.

x-router-model: the model that served your request
x-router-provider: the verified direct provider
x-router-fallback: whether a fallback was used

100%

requests traced

Visual Routing Trace

Open any request in your dashboard and see the full routing graph: which providers were tried, which was selected, timing for each attempt, and why.

Flow graph: model → candidates → selected provider
Per-attempt timing and failure reasons
Full audit trail stored for every request

See It in Action

Every response carries routing proof. Here’s what a real API call looks like:

terminal

$ curl -s -D- https://api.therouter.ai/v1/chat/completions \
  -H "Authorization: Bearer sk-your-key" \
  -H "Content-Type: application/json" \
  -d '{"model":"anthropic/claude-sonnet-4.6","messages":[{"role":"user","content":"Hi"}]}'

HTTP/2 200
x-router-request-id: req_a1b2c3d4e5
x-router-model: anthropic/claude-sonnet-4.6
x-router-provider: Anthropic
x-router-fallback: false
x-router-latency-ms: 847

{"id":"chatcmpl-...","model":"anthropic/claude-sonnet-4.6",...}

Start building in 3 lines of code

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.therouter.ai/v1",
  apiKey: "sk-your-key",
});

const response = await client.chat.completions.create({
  model: "anthropic/claude-sonnet-4.6",
  messages: [{ role: "user", content: "Hello!" }],
});

Get API Key Read the docs