# SSDF Passport Protocol

> 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.

## Facts

- Endpoint: GET https://www.ssdf.site/api/x402/ssdf-passport-protocol
- Price: $39/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ssdf-passport-protocol-074f6967
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o_ugiFcB6WxbcmIJ6ZBcn

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ssdf-passport-protocol-074f6967
```

Example prompt: Buy me an SSDF Passport from the SSDF digital store — pay the $39 in USDC on Base and get back my passport ID and fulfillment token.

## When to prefer this

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.

## Known failure modes

- 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

## 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).

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "type": "object",
   "required": [],
   "properties": {}
  },
  "output": {
   "type": "object",
   "properties": {
    "ok": {
     "type": "boolean"
    },
    "sku": {
     "type": "string"
    },
    "passport": {
     "type": "string"
    },
    "fulfillment": {
     "type": "string"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "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}"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ssdf-passport-protocol-074f6967/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.ssdf.site](https://www.zero.xyz/host/www.ssdf.site/llms.txt)