# Carbon & Cashmere Senior Position Sponsorship

> Carbon & Cashmere Senior Position Sponsorship is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $500/call, status unknown (last checked 2026-09-14).

Purchases a 'Senior Position' sponsorship tier (Tier 5) granting 3 months of unlimited API access and 3 advisory calls for $500 USDC.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/sponsor/senior-position
- Price: $500/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-senior-position-sponsorship-c8d0ac70
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_F--zEEHCoBqyO9QJM2hu7

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-senior-position-sponsorship-c8d0ac70
```

Example prompt: Sign me up for the Carbon & Cashmere Senior Position sponsorship — that's the Tier 5 package at $500 USDC that includes 3 months of unlimited API access and 3 advisory calls.

## When to prefer this

Choose this endpoint when you need long-term, high-volume access to the Carbon & Cashmere crypto signal API and want bundled advisory calls. It is a one-time purchase unlocking a 3-month subscription rather than a per-call pricing model, making it cost-effective for heavy users. Prefer this over per-call endpoints if your usage exceeds ~$500 worth of individual API calls over 3 months.

## Known failure modes

- Payment not processed — insufficient USDC balance results in payment failure
- Invalid or missing properties field causes a 400 bad request
- Sponsorship tier already active for sponsor — duplicate registration attempt may be rejected
- Network or gateway timeout causing incomplete transaction
- Fulfillment delayed beyond 48-hour SLA with no status update

## How this service works

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

## Output

Returns a confirmation object with tier number (5), tier name ('Senior Position'), a sponsor_id, a list of deliverables (3-month unlimited API access + 3 advisory calls), the amount paid in USDC ($500.00), and a fulfillment SLA of 48 hours.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tier": 5,
  "tier_name": "Senior Position",
  "sponsor_id": "abc123",
  "deliverables": [
   "3mo unlimited API",
   "3 advisory calls"
  ],
  "amount_paid_usdc": "$500.00",
  "fulfillment_sla_hours": 48
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-senior-position-sponsorship-c8d0ac70/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)