x402 Carbon Retirement API
x402.klimalabs.com · 2 paid endpoints · listed 2026-10-27
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.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | 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 | $0.001 | Base |
| GET | x402.klimalabs.com/api | $0.01 | Base |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 2 days ago | x402.klimalabs.com/api | 200 | 380 | HTTP 200 instead of 402 |
Income on Base (7 days)
| Day | Transfers | USDC | |
|---|---|---|---|
| 2026-11-04 | 2 | $0.002 | |
| 2026-11-03 | 3 | $0.003 | |
| 2026-11-02 | 8 | $0.044 | |
| 2026-11-01 | 4 | $0.004 | |
| 2026-10-31 | 3 | $0.003 | |
| 2026-10-30 | 4 | $0.013 | |
| 2026-10-29 | 4 | $0.004 | |
| 2026-10-28 | 4 | $0.004 |
Is this your API?
<a href="https://logicnodes.io/observatory/p/x402.klimalabs.com"><img src="https://logicnodes.io/observatory/badge/x402.klimalabs.com.svg" alt="x402 status"></a>
Claim it for free with
x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/x402.klimalabs.com