# Carbon & Cashmere RWA Score API

> Carbon & Cashmere RWA Score API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-08).

Returns a composite Real-World Asset (RWA) trust/quality score for a crypto asset on a given blockchain chain, broken down into sub-scores for audit, reserve, liquidity, compliance, redemption, holder diversity, issuer regulation, and on-chain activity.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/carbon/rwa/scores/%7Bchain%7D/%7Basset_code%7D
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-08
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-rwa-score-api-03ccf205
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oMvYPRSOvIStEHwArGFXb

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-rwa-score-api-03ccf205
```

Example prompt: Can you pull the Carbon & Cashmere RWA composite score for USDC on the Stellar chain, including the sub-scores for reserve backing, liquidity, compliance, and issuer regulation?

## When to prefer this

Use this endpoint when you need a structured, multi-dimensional quality and compliance assessment for a specific RWA or stablecoin token on a particular blockchain, especially when you need sub-score breakdowns (reserve, compliance, audit, liquidity) rather than just a price or trading signal. Prefer this over generic price endpoints when due-diligence or risk scoring is the goal.

## Known failure modes

- Unknown chain identifier returns 404 or empty result
- Invalid or unsupported asset code returns error or null scores
- Malformed path parameters cause 400 Bad Request
- Asset not yet scored returns empty or partial sub-score object
- Payment not completed (x402) results in 402 Payment Required response

## How this service works

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

## Output

A JSON object containing the composite RWA quality score (0-100 range), individual sub-scores for audit, reserve, liquidity, compliance, redemption, holder diversity, issuer regulation, and on-chain activity (each 0-1), plus the asset code, chain, and methodology version used.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "stellar",
  "composite": 87.5,
  "sub_audit": 1,
  "asset_code": "USDC",
  "sub_reserve": 0.6,
  "sub_liquidity": 0.85,
  "sub_compliance": 0.7,
  "sub_redemption": 1,
  "methodology_version": "v1.0",
  "sub_holder_diversity": 1,
  "sub_issuer_regulation": 1,
  "sub_on_chain_activity": 0.9
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-rwa-score-api-03ccf205/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)