Your Claude subscription
is your API now.
MonoRouter routes Claude Code, Cursor, LangChain — and your whole team — through the Claude plan you already pay for. Flat monthly price. No per-token billing, ever.
Works with any Anthropic-compatible tool
How it works
Up and running in three steps
Connect your subscription once — every tool you use starts routing through it. The only code change is the base URL.
Create an account
Sign up with Google or your email — takes 30 seconds.
Connect your subscription
Run the one-liner connect script — it launches claude setup-token, you authorize in the browser, and a long-lived token is sent to MonoRouter automatically. You can also paste a setup token manually.
Point your tools at MonoRouter
Set your base URL to api.monorouter.com and use your MonoRouter API key. Every call routes through your subscription.
Stack subscriptions. Share the pool.
Stop buying a Claude seat per developer. Pool one Max subscription — or five — and MonoRouter load-balances every request across all of them: when one is maxed out, traffic rotates to the ones sitting idle. Your team scales by adding subscriptions to the pool, not by buying one per person. Each member keeps their own key, caps, and audit trail.
See it in action
Build an agent in under a minute
Point the official Anthropic SDK at MonoRouter. Everything works — streaming, tool use, extended thinking.
import anthropic
client = anthropic.Anthropic(
base_url="https://api.monorouter.com",
api_key="mr-your-key",
)
response = client.messages.create(
model="claude-sonnet-4-20250514",
max_tokens=1024,
messages=[{
"role": "user",
"content": "Summarize this repo"
}]
)
print(response.content[0].text)Features
Built for developers who ship with AI
Route API calls through your existing subscription — with the tooling around it.
Auto-switch & load balancing
Connect multiple provider tokens. MonoRouter rotates requests round-robin and automatically cools down rate-limited tokens — zero errors, zero manual intervention.
Drop-in compatible
Fully Anthropic Messages API compatible. Change the base URL and everything works — streaming, tool use, vision, caching, extended thinking.
Real-time analytics
Live dashboard with requests, tokens, cost estimates, and latency. Breakdowns per model, API key, and provider token.
Automatic failover
When a token expires or hits a rate limit, traffic shifts to the next available one. Your application never sees an error.
Secure by default
AES-256-GCM encrypted token storage at rest. Simple signup with your email and a password.
All models supported
Claude Opus 4.8, Opus 4.7, Sonnet 4.5, Fable 5, Haiku, plus OpenAI GPT-4/5 and o-series through your own key.
Pricing
Simple, transparent pricing
Start free. Pay only if you need more.
- ✓Unlimited calls — free for life
- ✓Full analytics dashboard
- ✓No credit card required
- ✓Everything in Pro
- ✓5 team seats
- ✓Pooled subscriptions
- ✓Roles + audit log
FAQ
Common questions
Is there a free offer right now?
Yes. Sign up before September 8, 2026 (UTC) and you get MonoRouter free for life — unlimited calls, no credit card, no expiration. The grant is applied automatically at signup.
Does this work with Claude Pro or only Claude Max?
Both. MonoRouter uses the same OAuth flow that Claude Code uses — whichever tier your Anthropic account has (Pro or Max), routed requests bill against that subscription. No separate API credits needed.
Which tools and frameworks are supported?
Any client that speaks the Anthropic Messages API — Claude Code, Claude Agent SDK, LangChain, LangGraph, Cursor, Cline, Aider, the official Python and TypeScript SDKs — or the OpenAI Chat Completions API.
How are credentials stored?
AES-256-GCM encrypted at rest with a server-side key. Tokens are decrypted in-memory only to route a request and are never displayed. Passwords are hashed with Argon2id. Sessions use JWTs with version invalidation.
What are the free-tier limits?
Sign up before September 8, 2026 and you get unlimited calls free for life — no strings attached. After that date, new accounts get 1,500 free calls. Paid plans start at $9/month (Hobby, 10,000 calls). Pro is $29/month for unlimited personal use, and Team is $99/month for 5 seats with pooled subscriptions.
What do I need to sign up?
An email and a password. That's it.
What if I want to delete my account?
Go to /settings and delete your account. All data — user record, tokens, usage events, and subscription — is permanently removed. Your Anthropic account is unaffected.