# SSDF Design Packet Protocol

> SSDF Design Packet Protocol is a paid API for AI agents from www.ssdf.site, paid per call via x402, $62/call, status unknown (last checked 2026-09-16).

Purchases and delivers the SSDF design packet digital product, minting a Passport NFT upon settlement via USDC on Base.

## Facts

- Endpoint: GET https://www.ssdf.site/api/x402/ssdf-design-packet-protocol
- Price: $62/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ssdf-design-packet-protocol-30f5d089
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_9savN9hAgO1SJp78Dv9nu

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-design-packet-protocol-30f5d089
```

Example prompt: Buy me the SSDF design packet from the SSDF digital store — pay $62 in USDC on Base and give me the fulfillment link and my Passport ID once it settles.

## When to prefer this

Choose this endpoint when you specifically want to purchase the SSDF design packet digital product from SSDF INC, pay in USDC on Base via the x402 protocol, and receive both a fulfillment download link and a minted Passport NFT as proof of purchase. It is purpose-built for this single SKU and combines payment execution, digital delivery, and on-chain identity minting in one call.

## Known failure modes

- Payment not settled — USDC transfer on Base fails or is rejected, returning ok: false
- Insufficient funds — wallet balance below $62 USDC
- Network congestion on Base causing delayed or failed settlement
- Invalid or expired payment header (x402 protocol error)
- Fulfillment token not generated if on-chain mint fails

## 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 confirming success), sku (the purchased SKU identifier 'ssdf-design-packet-protocol'), passport (a unique Passport ID minted on-chain upon settlement), and fulfillment (a URL path to retrieve the purchased digital content).

## 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-design-packet-protocol",
  "passport": "{id}",
  "fulfillment": "/api/fulfillment/{token}"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ssdf-design-packet-protocol-30f5d089/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)