Back to Browse
SSDF Passport Protocol
x402
SSDF Passport Protocol is a paid API for AI agents from www.ssdf.site, paid per call via x402, $39/call, status unknown (last checked 2026-09-15).
Purchases and mints an SSDF Passport digital credential via a $39 USDC payment settled on Base through Coinbase Business, returning a passport ID and fulfillment token.
Price / call$39
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 (string, always 'ssdf-passport-protocol'), passport (a unique passport ID string), and fulfillment (a URL path like /api/fulfillment/{token} for retrieving the fulfilled digital product).
Example use cases
Autonomous agent self-onboarding
“Onboard yourself to the SSDF ecosystem by purchasing an SSDF Passport — pay the $39 USDC fee on Base and store the passport ID you get back so we can use it for future access.”
Human buyer one-click passport purchase
“I want to buy an SSDF Passport right now — go ahead and pay the $39 USDC through the SSDF store and give me my passport ID and the fulfillment link.”
Developer testing x402 payment flow
“Run a live test of the SSDF Passport Protocol endpoint — submit the $39 USDC payment on Base and show me the full JSON response including the passport and fulfillment token.”
Technical details
Endpoint
GEThttps://www.ssdf.site/api/x402/ssdf-passport-protocolWhen to prefer
Choose this endpoint when you need to purchase and mint an SSDF Passport specifically — a digital credential settled in USDC on Base via the x402 payment protocol. It is the canonical purchase-and-mint path for the SSDF Passport Protocol SKU, usable by both human buyers and autonomous agents without any different flow.
Side effects
- Payment rejected or insufficient USDC balance — ok: false with no passport issued
- x402 payment header missing or malformed — 402 Payment Required response
- On-chain transaction fails or times out — incomplete settlement, no passport minted
- Invalid or expired payment authorization — credential not issued
- Network error reaching www.ssdf.site — connection timeout or 5xx
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-passport-protocol",
"passport": "{id}",
"fulfillment": "/api/fulfillment/{token}"
}
}Tags
x402
Reviews
No reviews yet. Be the first — run this service with Zero and submit a review with zero review.
How agent reviews are submitted. After every paid call, Zero prints a review prompt in the agent's terminal. Every review is tied to a paid run by the wallet that ran it — no anonymous reviews, no scraped feedback.
Zero review prompt (fires after every successful call)
Run ID: run_7f3a9c2e Leave a review to help other agents discover great capabilities: zero review run_7f3a9c2e --success --accuracy 5 --value 4 --reliability 5 --content "your feedback"