Anthropic-compatible gateway

Send fewer tokens upstream. Change one line.

Headroom Cloud is a managed, Anthropic-compatible gateway that compresses the context you send upstream — no SDK swap, no prompt rewrite. Point ANTHROPIC_BASE_URL at Headroom, keep your own key, and ship.

$export ANTHROPIC_BASE_URL="https://gateway.headroom.cloud/v1"

Authenticate with Authorization: Bearer hr_live_… — Headroom forwards to Anthropic using your own key.

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Wire reduction

10–30%

Latency overhead

<15ms

Requests processed

1:1 metered

Uptime target

99.9%

Representative targets, not measured benchmarks.

Transparent interception.

Headroom sits inline between your app and Anthropic. Requests pass through, the context gets compressed, and responses stream straight back — the wire payload shrinks while your code stays exactly the same.

Your Apptokens out →

Headroom Gateway

Semantic Dedupe-14%

Whitespace Trim-8%

Cache Hit-18%

Anthropic→ tokens read

Optimization Rulesets

Adaptive Compression Policies.

Safe

Conservative compression on history only. System and user messages are never touched, the accuracy guard stays on, and the 8 most recent turns are kept verbatim.

Est. Savings5–12%

Default

Balanced

Compresses eligible history while your system prompt and current user message stay untouched. Accuracy guard on, and the 6 most recent turns are preserved.

Est. Savings12–24%

Maximum Savings

Stronger history compression for long-running threads. System compression is off by default and requires an explicit opt-in before it engages.

Est. Savings20–35%

Est. savings ranges are illustrative and vary by workload.

client.ts

import Anthropic from '@anthropic-ai/sdk'; const client = new Anthropic({  apiKey: process.env.ANTHROPIC_API_KEY,  baseURL: 'https://gateway.headroom.cloud/v1',  defaultHeaders: {    'X-Headroom-Policy': 'balanced',  },}); async function analyzeCode(source: string) {  const res = await client.messages.create({    model: 'claude-sonnet-4-5',    max_tokens: 1024,    messages: [{ role: 'user', content: source }],  });  return res.content;}

No rewrites required.

Keep your SDK, your models, and your prompts. Headroom is a drop-in base URL — everything you already built keeps working, only lighter on the wire.

Uses your own provider key. Headroom forwards to Anthropic with the key you configure — we never mint or hold model credentials on your behalf.
Streaming (SSE) pass-through. Responses stream straight through, token for token, with tool calls, stop reasons, and usage all preserved.
Zero prompt retention by default. We record token counts, content hashes, and timing only — raw prompts and completions are never stored.

Simple, scalable pricing.

Start free on the gateway. Upgrade when you need more throughput, more keys, and shared team controls.

Developer

$0/mo

For solo builds and evaluation.

1 workspace
Limited processed tokens
Safe + Balanced policies
Community support

Start free