# Carbon & Cashmere Open-Source Release Sponsorship

> Carbon & Cashmere Open-Source Release Sponsorship is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $2500/call, status unknown (last checked 2026-09-14).

Processes a $2500 USDC open-source release sponsorship payment, returning a sponsor ID, deliverables list, and fulfillment SLA for a public GitHub repo release with sponsor credit.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/sponsor/oss-release
- Price: $2500/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-open-source-release-sponsorship-2c9c7703
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P0_HFkRjdlw7o8cyUUF1M

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-open-source-release-sponsorship-2c9c7703
```

Example prompt: I'd like to sponsor the Carbon & Cashmere open-source release — pay the $2500 USDC fee and get back my sponsor ID, the list of deliverables like the public GitHub repo and README credit, and the fulfillment timeline.

## When to prefer this

Use this endpoint when you specifically want to fund and trigger the Carbon & Cashmere open-source release sponsorship program, receive a sponsor credit in their public GitHub README under an MIT/Apache-2.0 license, and obtain a formal sponsor_id with a 45-day fulfillment SLA. Not suitable for general crypto market data queries or signals.

## Known failure modes

- Payment of $2500 USDC not received — endpoint returns payment required or authorization error
- Invalid or missing properties parameter — may return schema validation error
- Duplicate sponsorship submission — may create a new sponsor_id or reject as already processed
- Network/API timeout — no sponsor_id returned, payment state unclear

## How this service works

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

## Output

Returns a JSON object with a unique sponsor_id, the project name ('Open-Source Release Sponsorship') and code ('OS'), a list of deliverables (public GitHub repo, MIT/Apache-2.0 license, sponsor credit in README), the amount paid ($2500.00 USDC), and a fulfillment SLA of 45 days.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sponsor_id": "abc123",
  "deliverables": [
   "Public GitHub repo",
   "MIT/Apache-2.0 license",
   "Sponsor credit in README"
  ],
  "project_code": "OS",
  "project_name": "Open-Source Release Sponsorship",
  "amount_paid_usdc": "$2500.00",
  "fulfillment_sla_days": 45
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-open-source-release-sponsorship-2c9c7703/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)