# Carbon & Cashmere Whale Sponsor Tier

> Carbon & Cashmere Whale Sponsor Tier is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $1000/call, status unknown (last checked 2026-09-14).

Purchases the Whale-tier ($1000 USDC) sponsorship package for 12 months of unlimited Carbon & Cashmere API access, 12 advisory calls, and weekly digests

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/sponsor/whale
- Price: $1000/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-whale-sponsor-tier-fecac9d2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EGHxFCGIxH9c_twGn1zOX

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-whale-sponsor-tier-fecac9d2
```

Example prompt: Sign me up for the Carbon & Cashmere Whale sponsorship — I want the $1000 USDC tier with 12 months of unlimited API access, 12 advisory calls, and the weekly digest.

## When to prefer this

Use this endpoint when an agent or user wants to commit to a long-term, high-volume relationship with Carbon & Cashmere crypto intelligence, requiring unlimited API calls, human advisory access, and curated weekly digests — not for one-off data lookups or lighter-tier subscriptions.

## Known failure modes

- Insufficient USDC balance — payment cannot be processed
- Invalid or missing x402 payment header — request rejected
- Sponsorship tier already active for this account — duplicate purchase
- Fulfillment SLA not met within 48 hours — onboarding delayed
- Network or gateway error during payment settlement

## How this service works

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

## Output

Returns a JSON object confirming the Whale-tier (tier 6) sponsorship, the assigned sponsor_id, the list of deliverables (12-month unlimited API, 12 advisory calls, weekly digest), the amount paid ($1000.00 USDC), and a 48-hour fulfillment SLA.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 6,
  "tier_name": "Whale",
  "sponsor_id": "abc123",
  "deliverables": [
   "12mo unlimited API",
   "12 advisory calls",
   "Weekly digest"
  ],
  "amount_paid_usdc": "$1000.00",
  "fulfillment_sla_hours": 48
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-whale-sponsor-tier-fecac9d2/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)