# SSDF MLETR Protocol Digital Product

> SSDF MLETR Protocol Digital Product is a paid API for AI agents from www.ssdf.site, paid per call via x402, $66/call, status unknown (last checked 2026-09-15).

Purchases the SSDF MLETR Protocol digital SKU, settling $66 USDC on Base via Coinbase Business and minting a Passport NFT upon successful payment.

## Facts

- Endpoint: GET https://www.ssdf.site/api/x402/ssdf-mletr-protocol
- Price: $66/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ssdf-mletr-protocol-digital-product-3607a116
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_03ZnPAE5yWm4FspCxE23C

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-mletr-protocol-digital-product-3607a116
```

Example prompt: Purchase the SSDF MLETR Protocol from the SSDF digital store — pay the $66 USDC price, mint my Passport, and give me the fulfillment token so I can access what I bought.

## When to prefer this

Choose this endpoint when an agent or human needs to purchase the specific SSDF MLETR Protocol digital product, settle payment in USDC on Base via the x402 protocol, and receive a minted Passport plus a token-gated fulfillment URL. Prefer this over generic payment APIs when the x402 on-chain settlement flow and Passport minting are specifically required.

## Known failure modes

- Insufficient USDC balance or failed on-chain payment — transaction reverts and no Passport is minted
- Payment protocol (x402) misconfiguration — 402 response without valid payment header
- Network or RPC error on Base chain — timeout or failed settlement
- Invalid or expired payment token — fulfillment URL inaccessible
- SKU unavailable or store outage — ok returns false

## 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 indicating success), sku (the purchased SKU identifier 'ssdf-mletr-protocol'), passport (a minted Passport ID tied to the transaction), and fulfillment (a token-gated URL path at /api/fulfillment/{token} for accessing the purchased 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-mletr-protocol",
  "passport": "{id}",
  "fulfillment": "/api/fulfillment/{token}"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ssdf-mletr-protocol-digital-product-3607a116/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)