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Carbon & Cashmere Sponsor Position Holder
x402
Carbon & Cashmere Sponsor Position Holder is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $300/call, status unknown (last checked 2026-09-14).
Registers a paid sponsorship position (tier 4) at $300 USDC, returning a sponsor ID, deliverables (1-hr Q&A call), and fulfillment SLA details.
Price / call$300
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object with the sponsor tier (4), tier name ('Position Holder'), a unique sponsor_id, list of deliverables (e.g. '1-hr Q&A call'), the amount paid in USDC, and the fulfillment SLA in hours (48).
Example use cases
Example prompt
“Sign me up as a Position Holder sponsor on Carbon & Cashmere — I want to lock in that tier 4 slot with the 1-hour Q&A call deliverable for $300 USDC.”
Technical details
Endpoint
GEThttps://api.carbon-cashmere.de/v1/sponsor/position-holderWhen to prefer
Use this endpoint when the user explicitly wants to purchase or register a paid sponsorship position with Carbon & Cashmere, specifically the $300 USDC 'Position Holder' tier that includes a 1-hour Q&A call. Choose this over other C&C endpoints when the goal is transactional (paying for access/deliverables) rather than querying market data.
Side effects
- Payment not received or insufficient funds — endpoint may reject with payment-required error
- Invalid or malformed properties parameter — returns schema validation error
- Sponsorship slots may be sold out or unavailable — returns resource conflict
- Network or provider downtime — returns 5xx error with no sponsor_id issued
- Duplicate submission — idempotency not guaranteed, may create duplicate sponsor records
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"tier": 4,
"tier_name": "Position Holder",
"sponsor_id": "abc123",
"deliverables": [
"1-hr Q&A call"
],
"amount_paid_usdc": "$300.00",
"fulfillment_sla_hours": 48
}
}Tags
x402
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