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lab.paidapis.net Invoice Create
x402
lab.paidapis.net Invoice Create is a paid API for AI agents from lab.paidapis.net, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Issues a signed, deferred-payment invoice to a specified wallet address for a given USDC amount, to be settled later at a dynamic /pay sub-resource.
Price / call$0.001
Success—
StatusUnknown
How this service works
Machine-to-machine invoicing: issue a signed invoice now (payerAddress, amountUsdc, optional lineItems/memo/dueBy); the payer settles it later at its own dynamically-priced /pay sub-resource, instead of paying synchronously like every other endpoint here.
Output
Returns a signed invoice object including a unique invoice ID, the payer wallet address, total USDC amount due, optional line items and memo, the due date, and a /pay sub-resource URL the payer can later call to settle the invoice at dynamically determined pricing.
Example use cases
Freelance Web3 service billing
“Issue a USDC invoice to wallet 0x1234...ABCD for 150 USDC due by April 30th — add a memo that says 'Smart contract audit, Q1 2025' and two line items: code review for 100 USDC and report writing for 50 USDC.”
Agent-to-agent deferred payment
“My agent just completed a data enrichment job for another agent at wallet 0xDEAD...BEEF — create a signed invoice for 5.50 USDC with a note saying 'Enrichment batch job #42', due in 7 days.”
SaaS subscription renewal reminder
“Generate an invoice for wallet address 0x9999...1111 for 99 USDC with the memo 'Monthly Pro Plan — May 2025' and a due date of May 1st 2025.”
Technical details
Endpoint
POSThttps://lab.paidapis.net/api/invoice/createWhen to prefer
Choose this endpoint when you need to issue a deferred, asynchronous payment request rather than collecting payment synchronously. It is ideal for agent-to-agent billing, freelance crypto invoicing, or any workflow where the payer needs to settle at a later time via a separate /pay sub-resource. Prefer this over synchronous payment endpoints when payment timing is flexible or must be negotiated separately.
Side effects
- Invalid or malformed payerAddress returns a validation error
- amountUsdc of zero or negative value rejected
- Malformed dueBy ISO 8601 string causes a parsing error
- lineItems containing invalid JSON structure returns a schema error
- Duplicate invoice creation for same payer/amount/memo may produce a new invoice each time (non-idempotent)
- Missing required fields (payerAddress, amountUsdc) results in a 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| memo | string | Free-text note. |
| dueBy | string | ISO 8601 due date (default 7 days out). |
| lineItems | string | JSON array of {"description","amountUsdc"} objects, for record-keeping. |
| amountUsdc | number | Total amount due, in USDC. |
| payerAddress | string | Wallet address expected to pay this invoice. |
Tags
x402
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