code402 / tools / create-b2b-invoice

Create B2B contractor invoice — pay-per-call API

Name: code402 — Create B2B contractor invoice
Price: 0.000999 USD
Author: code402

$0.000999 per call · 20 free calls/day · no signup · pay with card credits or a signed USDC voucher (x402)

Generate a pre-cleared, gasless B2B settlement invoice on Base L2 with floating piecewise dynamic fee (capped) and dual-rail bank coordinates (JUANA LIMITED Tide / CurrencyCloud).

Honest scope: Deterministic, offline, explainable — no ML, no scraping. The response's scope field states the exact guarantee.

Try it (first 20 calls/day free)

curl -X POST https://code402.dev/v1/tools/create-b2b-invoice/call \
  -H "content-type: application/json" \
  -d '{"amount_usdc":50000,"merchant":"0xc59c85e661d34084a7769f955d17fd38254a6235","client_name":"Apex AI","memo":"Sprint #14 Milestones"}'

No key needed for the free tier. When the free quota is used up, the API replies HTTP 402 with the exact price — agents sign the x402 voucher and retry; humans buy card credits. Every paid response carries a signed receipt you can verify offline.

Run it in the playground (free)Pay by card — credits, no crypto

Input parameters

Field	Type	Meaning
`amount_usdc` (required)	number	Invoice total in USDC (e.g. 50000).
`merchant` (required)	string	Beneficiary contractor Base EVM wallet address (0x...).
`client_name`	string	Client enterprise organization name (optional).
`memo`	string	Engagement scope / milestone description (optional).
`referrer`	string	Referral partner wallet address to earn 20% protocol fee rebate (optional).

Response

Top-level fields: tool, valid, invoice_id, amount_usdc, merchant, status, cart_hash, protocol_fee_usdc, retained_savings_usdc, invoice_url, pay_url, scope. Paid responses also carry a signed XDR-1 receipt.

All code402 tools

Machine-readable catalog: llms-full.txt · MCP manifest · OpenAPI. Operated by JUANA LIMITED (UK Co. No. 14043409). Non-custodial: USDC settles payer→seller directly on Base.