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SSDF Rail Receipt Purchase
x402
SSDF Rail Receipt Purchase is a paid API for AI agents from www.ssdf.site, paid per call via x402, $1/call, status unknown (last checked 2026-09-15).
Purchases the SSDF Rail Receipt SKU from SSDF INC's digital store, settling $1 USDC on Base via Coinbase Business and minting a Passport NFT as proof of purchase.
Price / call$1
Success—
StatusUnknown
How this service works
SSDF INC digital store. Priced in USD, settled in USDC on Base through Coinbase Business. Humans and agents buy the same SKU. Every settlement mints a Passport.
Output
Returns a JSON object with: `ok` (boolean success flag), `sku` (the purchased product identifier, e.g. 'ssdf-rail-receipt'), `passport` (the minted Passport ID tied to this purchase), and `fulfillment` (a URL path to retrieve the fulfilled digital item, e.g. '/api/fulfillment/{token}').
Example use cases
Agent purchases SSDF digital receipt
“Go ahead and buy the SSDF Rail Receipt for me — pay the $1 USDC with my Base wallet and give me the Passport ID and fulfillment link when it's done.”
Automated on-chain purchase for proof of access
“I need to purchase the ssdf-rail-receipt SKU from SSDF INC's store using USDC on Base so I can get a Passport minted as proof — can you do that now?”
Developer testing x402 payment flow
“Run a test purchase against the SSDF store's rail receipt endpoint using x402 — pay 1 USDC on Base and show me the Passport ID and fulfillment token I get back.”
Technical details
Endpoint
GEThttps://www.ssdf.site/api/x402/ssdf-rail-receiptWhen to prefer
Choose this endpoint when you specifically want to purchase the SSDF Rail Receipt SKU from SSDF INC's digital store using the x402 micropayment protocol, pay exactly $1 USDC settled on the Base blockchain via Coinbase Business, and receive a Passport NFT mint plus a fulfillment token as proof. Prefer this over generic payment endpoints when the agent needs on-chain Passport issuance as a side effect of purchase, or when building workflows that depend on x402-compatible digital storefronts on Base.
Side effects
- Payment rejected or insufficient USDC balance — ok returns false or HTTP 402 re-issued
- Invalid or malformed x402 payment header — endpoint returns payment required error
- Base network congestion causing settlement delay — fulfillment token may be delayed
- Duplicate payment attempt — may result in a second Passport mint or idempotency error depending on server logic
- SKU unavailable or store configuration error — ok returns false with no passport or fulfillment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"properties": {
"ok": {
"type": "boolean"
},
"sku": {
"type": "string"
},
"passport": {
"type": "string"
},
"fulfillment": {
"type": "string"
}
}
},
"example": {
"ok": true,
"sku": "ssdf-rail-receipt",
"passport": "{id}",
"fulfillment": "/api/fulfillment/{token}"
}
}Tags
x402
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