# SSDF Functional Safety Protocol

> SSDF Functional Safety Protocol is a paid API for AI agents from www.ssdf.site, paid per call via x402, $54/call, status unknown (last checked 2026-09-15).

Purchases and delivers the SSDF Functional Safety Protocol digital product, minting a blockchain Passport upon settlement via USDC on Base.

## Facts

- Endpoint: GET https://www.ssdf.site/api/x402/ssdf-functional-safety-protocol
- Price: $54/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ssdf-functional-safety-protocol-db57d1e3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0uiq3F8HoOEZCztzOZN0K

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-functional-safety-protocol-db57d1e3
```

Example prompt: Can you buy the SSDF Functional Safety Protocol for me from SSDF INC? It's $54 USDC and I want the passport minted to my account.

## When to prefer this

Use this endpoint specifically when you need to purchase and receive the SSDF Functional Safety Protocol digital product with on-chain settlement in USDC on Base and want a blockchain Passport minted as proof of purchase. Prefer this over generic digital storefronts when you need verifiable on-chain proof of purchase or when your workflow requires x402 micropayment-based access to digital safety documentation.

## Known failure modes

- Insufficient USDC balance causes payment failure and no fulfillment
- Payment settlement timeout on Base blockchain returns incomplete or missing passport
- Invalid or expired x402 payment header results in 402 error
- Network issues with Coinbase Business settlement layer cause transaction delay or failure
- Duplicate payment attempts may not be idempotent — multiple charges possible

## 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 confirming the purchase with: 'ok' boolean indicating success, 'sku' string identifying the product ('ssdf-functional-safety-protocol'), 'passport' string containing the minted Passport ID tied to this purchase, and 'fulfillment' string with the URL path to retrieve the actual 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-functional-safety-protocol",
  "passport": "{id}",
  "fulfillment": "/api/fulfillment/{token}"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ssdf-functional-safety-protocol-db57d1e3/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)