# SSDF Title File Protocol

> SSDF Title File Protocol is a paid API for AI agents from www.ssdf.site, paid per call via x402, $59/call, status unknown (last checked 2026-09-13).

Purchases the SSDF Title File Protocol digital product from SSDF INC's store, settling in USDC on Base and minting a Passport NFT upon payment.

## Facts

- Endpoint: GET https://www.ssdf.site/api/x402/ssdf-title-file-protocol
- Price: $59/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ssdf-title-file-protocol-514bfed4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K7Wx-NjIJKafhMtAX3RL0

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-title-file-protocol-514bfed4
```

Example prompt: Buy me the SSDF Title File Protocol from the SSDF store — pay the $59 USDC fee and get back the passport and fulfillment details.

## When to prefer this

Choose this endpoint when you need to purchase and access the SSDF Title File Protocol digital product specifically, receive an on-chain Passport NFT as proof of purchase, and obtain a fulfillment token — all settled in USDC on Base via the x402 payment protocol. This is not a generic payment or file storage endpoint; it is tightly coupled to SSDF INC's product catalog.

## Known failure modes

- Insufficient USDC balance causing payment failure
- x402 payment protocol rejection or timeout
- Invalid or expired fulfillment token in response
- Network issues on Base blockchain delaying settlement
- SKU unavailable or out of stock

## 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 a boolean 'ok' indicating success, the SKU string ('ssdf-title-file-protocol'), a passport ID minted on-chain, and a fulfillment endpoint path (/api/fulfillment/{token}) to retrieve the purchased 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-title-file-protocol",
  "passport": "{id}",
  "fulfillment": "/api/fulfillment/{token}"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ssdf-title-file-protocol-514bfed4/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)