# Vealth tCO2e Oracle (CDP-settled)

> Vealth tCO2e Oracle (CDP-settled) is a paid API for AI agents from vealth.net, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns a standards-registered tCO2e (tonnes of CO2 equivalent) estimate for a given work type, sourced exclusively from Vealth's own internal records, with honest 'not found' signaling.

## Facts

- Endpoint: POST https://vealth.net/.well-known/vealth/cdp/tco2e-oracle
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/vealth-tco2e-oracle-cdp-settled-b2954b16
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_eLyzW0wJQcT9BiTwodUsI

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 vealth-tco2e-oracle-cdp-settled-b2954b16 -d '<json body>'
```

Example prompt: What's the registered tCO2e estimate in Vealth's standards library for 'solar panel installation' — and let me know if it's found or not?

## When to prefer this

Use this endpoint when you need a standards-registered, internally-sourced tCO2e estimate specifically from Vealth's own records — not a third-party estimate or a model-generated approximation. Ideal for climate disclosure workflows where authoritative sourcing and honest 'not found' signaling matter, especially when cross-referencing against CDP-compatible frameworks or verifying carbon claims for a specific work type.

## Known failure modes

- Work type not recognized in registry — returns found:false with no estimate
- Malformed or empty workType input — likely 400 or error response
- Payment not processed (x402 payment required at $0.01 USDC) — returns 402 Payment Required
- Work type string too ambiguous to match a registered category — may return found:false
- Service unavailable or CDP settlement layer offline — 503 or timeout

## How this service works

tCO2e Oracle (CDP-settled mirror) — our standards-registered library's tCO2e estimate for a work type. An answer only we can give, from our own records. Honest found:false when unknown.

## Output

A tCO2e (tonnes of CO2 equivalent) estimate for the given work type drawn from Vealth's own standards-registered library, along with a boolean 'found' flag indicating whether the work type is recognized in their records. If unknown, the response honestly returns found:false rather than a fabricated estimate.

## Request schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/vealth-tco2e-oracle-cdp-settled-b2954b16/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from vealth.net](https://www.zero.xyz/host/vealth.net/llms.txt)