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PostalForm Machine Order
x402
PostalForm Machine Order is a paid API for AI agents from postalform.com, paid per call via x402, $3.4/call, status unknown (last checked 2026-10-11, last successful call 2026-06-10).
Submit a machine-generated order to print and physically mail a PDF letter to a recipient via postal service
Price / call$3.4
Success100%
StatusUnknown
How this service works
Unauthenticated calls return 402 Payment Required when the order is ready to be paid. Retry the exact same body with PAYMENT-SIGNATURE after settlement.
Output
An order confirmation containing an order ID that can be used to poll fulfillment status via the sibling :Id endpoint; confirms the letter has been queued for printing and physical mailing.
Example use cases
Example prompt
“Send a real printed letter via PostalForm from me, Jane Smith at 123 Main St, Austin TX 78701 US, to John Doe at 456 Oak Ave, Denver CO 80203 US — use the PDF I just uploaded with token 'tok_abc123', and confirm delivery to jane@example.com.”
Technical details
Endpoint
POSThttps://postalform.com/api/machine/orders?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs to dispatch a real, physically printed and mailed letter to a postal address — not an email or digital message. Ideal for automations that require formal postal communication, legal notices, or any workflow where a tangible paper letter is required. Pair with the Validate endpoint first to get a quote, and use the :Id endpoint afterward to poll order status.
Side effects
- Invalid or expired PDF upload token returns an error
- Missing required address fields (line1, city, zip) causes validation failure
- Invalid countryCode or malformed ZIP code rejected
- Payment not provided or x402 payment challenge not resolved returns 402 Payment Required
- Duplicate request_id may be rejected or deduplicated
- Recipient or sender address undeliverable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| object | ||
| buyer_name | string | |
| request_id | string | |
| buyer_email | string | |
| sender_name | string | |
| recipient_name | string | |
| sender_address_type | string | |
| sender_address_manual | object | |
| recipient_address_type | string | |
| recipient_address_manual | object |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "payment_settled",
"is_paid": true,
"order_id": "00000000-0000-4000-8000-000000000001"
}
}Tags
x402
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Zero review prompt (fires after every successful call)
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