Routeweiler

The financial operating system for AI agent fleets.

A single line — await routeweiler.get(url) — that pays across any rail, enforces spend caps, audits every transaction, and governs every agent that touches money.

import asyncio
from eth_account import Account
from routeweiler import Routeweiler, Funding

async def main():
    signer = Account.from_key("0xYOUR_PRIVATE_KEY")
    async with Routeweiler(funding=[Funding.base_usdc(wallet=signer)]) as client:
        response = await client.get("https://api.example.com/data")  # 402 handled silently
        print(response.json())

asyncio.run(main())

pip install routeweiler

Get started in 5 minutes GitHub

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What Routeweiler does

When a server returns 402 Payment Required, Routeweiler:

1. Intercepts 402 and parse the challenge — x402, L402, MPP-Tempo, or MPP-SPT.
2. Enforces policy rules for URL patterns, rail, or amount.
3. Routes to the best rail using cost, policy, and sticky-session preferences.
4. Enforces budgets for agent or session with Ed25519-signed draw receipts.
5. Pay and retry with signed Authorization header.
6. Emits a trace for each call as one structured SQLite event.

Supported rails

Rail	Protocol	Settlement
x402	EVM signed transfer	On-chain USDC (Base, etc.)
L402	BOLT-11 Lightning	Sats
MPP-Tempo	Tempo 0x76 transaction	PathUSD / USDC
MPP-SPT	Stripe Shared Payment Token	Fiat card

Non-custodial by design

Keys stay in the caller's process. Routeweiler never holds funds, never proxies payments through a server, and never transmits private keys. This keeps it outside money-transmitter and CASP regulations. See the FAQ for details.