# Carbon Cashmere Tokenized-Equity Index History

> Carbon Cashmere Tokenized-Equity Index History is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).

Returns time-series historical snapshots (1–1000 hourly data points) of the Carbon Tokenized-Equity Index values for drift analysis, regime detection, and backtesting research.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/carbon/equity/index/v1/history
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-carbon-cashmere-de-d37db8ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zenrP-_fnGjo7omoP52bC

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 api-carbon-cashmere-de-d37db8ae
```

Example prompt: Pull the last 500 hourly snapshots of the Carbon Tokenized-Equity Index so I can run a regime detection and drift analysis on the data.

## When to prefer this

Choose this endpoint when you need longitudinal hourly history of the Carbon Tokenized-Equity Index specifically — e.g., for backtesting strategies, detecting quality regime shifts, or performing drift analysis over time. Prefer this over real-time or single-snapshot endpoints when your research requires multi-period time-series context.

## Known failure modes

- Requested snapshot count out of range (must be 1–1000) — returns 400 error
- Upstream index data unavailable or stale — returns 503 or partial dataset
- Payment not processed or insufficient USDC balance — returns 402 payment required
- Rate limiting exceeded — returns 429 too many requests

## How this service works

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## Output

An ordered array of up to 1000 hourly index value snapshots for the Carbon Tokenized-Equity Index, including timestamps and index values, suitable for drift analysis, regime classification, and backtesting workflows.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 168,
  "samples": [
   {
    "computed_at": "2026-05-17T19:13:28Z",
    "index_value": 84.52,
    "constituent_count": 4
   }
  ],
  "index_name": "carbon_tokenized_equity_v1"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-carbon-cashmere-de-d37db8ae/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)