# Carbon & Cashmere Smart Money Sponsorship API

> Carbon & Cashmere Smart Money Sponsorship API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $200/call, status unknown (last checked 2026-10-17).

Purchases a Smart Money tier sponsorship granting 30-day unlimited API access to professional crypto market intelligence signals

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/sponsor/smart-money?utm_source=zero.xyz
- Price: $200/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-smart-money-sponsorship-api-23376a0b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P5sDV7gukNu_HusjBVhNj

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 carbon-cashmere-smart-money-sponsorship-api-23376a0b
```

Example prompt: Purchase the Smart Money tier sponsorship on Carbon & Cashmere to unlock 30 days of unlimited crypto signal API access — I want to pay the $200 USDC and get my sponsor ID back.

## When to prefer this

Use this endpoint when you need sustained, high-volume access to Carbon & Cashmere's full suite of crypto market intelligence endpoints (prices, signals, ML accuracy, trend analytics, correlation, price impact) and want to pay once for 30 days of unlimited calls rather than per-call pricing.

## Known failure modes

- Insufficient USDC balance — payment cannot be completed
- Invalid or missing payment header — 402 payment required response
- Malformed properties parameter — 400 bad request
- Fulfillment delay beyond 24-hour SLA if provisioning backlog occurs
- Duplicate sponsorship purchase attempt — may create duplicate sponsor record

## How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

## Output

Returns a JSON object confirming the sponsorship purchase including tier number (3), tier name ('Smart Money'), a unique sponsor_id, list of deliverables ('30d API unlimited'), amount paid in USDC ($200.00), and fulfillment SLA in hours (24).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 3,
  "tier_name": "Smart Money",
  "sponsor_id": "abc123",
  "deliverables": [
   "30d API unlimited"
  ],
  "amount_paid_usdc": "$200.00",
  "fulfillment_sla_hours": 24
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-smart-money-sponsorship-api-23376a0b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.carbon-cashmere.de](https://www.zero.xyz/host/api.carbon-cashmere.de/llms.txt)