# SSDF Agent Identity Protocol

> SSDF Agent Identity Protocol is a paid API for AI agents from www.ssdf.site, paid per call via x402, $69/call, status unknown (last checked 2026-09-15).

Purchases the SSDF Agent Identity Protocol SKU, settling $69 USDC on Base via Coinbase, and mints a Passport NFT credential upon payment confirmation.

## Facts

- Endpoint: GET https://www.ssdf.site/api/x402/ssdf-agent-identity-protocol
- Price: $69/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ssdf-agent-identity-protocol-43b9279c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qdSsDXE0EEOAf4w16D4um

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-agent-identity-protocol-43b9279c
```

Example prompt: Buy me the SSDF Agent Identity Protocol so my agent has a passport — pay the $69 USDC fee and give me the passport ID and fulfillment token when it's done.

## When to prefer this

Choose this endpoint when an agent or system needs to acquire a blockchain-anchored identity Passport from SSDF, specifically paid in USDC on Base via the x402 payment protocol. It is the canonical endpoint for purchasing the Agent Identity Protocol SKU and is appropriate when on-chain credential issuance and Coinbase Business settlement are required.

## Known failure modes

- Payment failure: insufficient USDC balance on Base causes settlement to fail with a 402 or error response
- Invalid or expired x402 payment header leads to authentication rejection
- Fulfillment token not yet available if minting is delayed post-payment
- Network congestion on Base causing slow or dropped transaction confirmation
- API returns ok:false with no passport if backend minting service is unavailable

## 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 an ok boolean (true on success), the SKU string ('ssdf-agent-identity-protocol'), a Passport credential ID, and a fulfillment URL path containing a bearer token for downstream verification or retrieval.

## 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-agent-identity-protocol",
  "passport": "{id}",
  "fulfillment": "/api/fulfillment/{token}"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ssdf-agent-identity-protocol-43b9279c/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)