https://x402.klimalabs.com/api/catalog
Entry point to the x402 Carbon Retirement API on Base. Returns every endpoint you need plus a live snapshot of the top 3 carbon classes and marketplace listings by liquidity. Discover, quote and certificate are free. Retiring is paid: each retirement costs the credit price plus a fee, sent from your own wallet (prepare/retire) or relayed from a signed USDC authorization (prepare-auth + POST actions/retire). Full spec at /openapi.json.
#260
$0.0010
16
5
Points earned against points available, biggest lever first.
| Rank | Service | Score | Volume | Price |
|---|---|---|---|---|
| #1 | 68 | 7.0K txns | $0.0010 | |
| #2 | Otto AI−30 | 66 | 3.6K txns | $0.0010 |
| #3 | Bitrefill−27 | 63 | 365 txns | $0.0020 |
| #4 | 63 | 2.5K txns | $0.02 |
| #5 | 62 | 1.1K txns | $0.01 |