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Vealth Carbon Credit Retirement (retire-attach)
x402
Vealth Carbon Credit Retirement (retire-attach) is a paid API for AI agents from vealth.net, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).
Retires a specified number of tonnes of carbon credits on-chain via Carbonmark and attaches the retirement proof to a beneficiary wallet address.
Price / call$0.25
Success—
StatusUnknown
How this service works
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Output
Returns a JSON object confirming the retirement with: a boolean ok status, retire-attach version string, cost in USDC, the on-chain retirement transaction hash (retire_tx), a Basescan URL for the Base chain transaction, the amount retired in tonnes, the beneficiary address, and a Carbonmark retirements URL providing a publicly verifiable retirement certificate.
Example use cases
Individual carbon footprint offset
“I want to offset 0.01 tonnes of CO2 for my wallet 0xABC123 — retire the carbon credits on-chain and give me a verifiable Basescan transaction and Carbonmark retirement link.”
Automated per-transaction emission offset
“Every time a transaction completes on our platform, retire 0.002 tonnes of carbon credits on behalf of the user's address — attach the retirement to their wallet and return the proof URL.”
Corporate sustainability reporting
“Retire 5 tonnes of carbon credits on-chain and attach the retirement to our company wallet 0xCORP456 so we can include the Carbonmark retirement URL in our annual sustainability report.”
Technical details
Endpoint
POSThttps://vealth.net/.well-known/vealth/retire-attachWhen to prefer
Choose this endpoint when you need a fully on-chain, verifiable carbon credit retirement with a public transaction hash and a Carbonmark certificate URL attached to a specific beneficiary wallet. Prefer it over off-chain offset services when cryptographic proof of retirement is required for compliance, reporting, or audit trails. Ideal for agents that need to programmatically retire small fractional tonne amounts per user action or transaction.
Side effects
- Insufficient USDC balance to cover the $0.25 call fee or carbon credit cost
- Invalid or malformed beneficiary_address (non-checksummed or non-EVM address)
- amount_tonnes too small or below minimum threshold for retirement
- Carbonmark or KlimaDAO liquidity unavailable for the requested amount
- Base chain congestion causing transaction timeout
- x402 payment protocol failure or incorrect payment header
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| amount_tonnes | number | |
| beneficiary_address | string |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"version": "retire-attach-v1",
"cost_usdc": 0.15,
"retire_tx": "0x…",
"basescan_url": "https://basescan.org/tx/0x…",
"amount_tonnes": 0.005,
"beneficiary_address": "0xYourAddress",
"carbonmark_retirements_url": "https://www.carbonmark.com/retirements/…"
}
}Tags
x402
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