{"id":"x402.x402-carbon-retirement-api","name":"x402 Carbon Retirement API","summary":"Retire tokenized carbon credits on Base via Klima Protocol and the Carbonmark marketplace. Discover and quote live carbon supply, build or relay a USDC-paid retirement, and get the public Carbonmark certificate. GET /api/catalog ($0.001 USDC) returns the full endpoint directory plus a live snapshot of the most liquid carbon supply.","kind":"http_api","url":"https://www.carbonmark.com/ai-agents","categories":["crypto_onchain_data"],"tags":["Blockchain"],"sources":[{"source":"x402_list","ref":"https://x402-list.com/services/x402-carbon-retirement-api"}],"pricing":{"model":"per_call","min_usd":0.001,"max_usd":0.001,"rails":["x402"],"networks":["eip155:8453"]},"status":"unclaimed","first_party":false,"discovery":{"llms_txt":"https://x402.klimalabs.com/llms.txt","x402_manifest":"https://x402.klimalabs.com/.well-known/x402","openapi":"https://x402.klimalabs.com/openapi.json"},"trust":{"verified_buyers_30d":7,"settlements_30d":20,"volume_usd_30d":0.02,"top_buyer_share_30d":0.65,"last_settlement_at":"2026-10-02T11:30:53Z","shared_payout":false,"wash_flags":[],"method":"hub-trust-v0.1","source":"x402-list.com on-chain measured settlements (CC BY 4.0)","score":41,"evidence":"verified_non_wash_payments","watch":[]},"signals":{"x402_list_status":"online","x402_list_verified":false,"uptime_24h":100,"uptime_30d":99.9,"p95_ms":1778,"compliance_grade":"A","risk_level":"clean","endpoint_count":1,"openapi_paid_ops":3},"origin":"https://x402.klimalabs.com","attribution":["Data: x402-list.com (CC BY 4.0)"],"badges":["unclaimed","paid_usage_verified"],"tiers":{"tier":null,"tier_label":null,"highest_earned":null,"earned":[],"paid":[],"not_yet":[{"id":"verified","reason":"listing not claimed with domain proof"},{"id":"trusted","reason":"needs Live-Tested"}],"badge_svg":"https://agentropolis.io/badge/x402.x402-carbon-retirement-api.svg","page":"https://agentropolis.io/listing/x402.x402-carbon-retirement-api","embed_markdown":"[![Agentropolis](https://agentropolis.io/badge/x402.x402-carbon-retirement-api.svg)](https://agentropolis.io/listing/x402.x402-carbon-retirement-api)","tiers_doc":"https://agentropolis.io/badges"},"page":"/listing/x402.x402-carbon-retirement-api","kit_manifest":"/api/v1/listings/x402.x402-carbon-retirement-api/kit.json","go":"/go/x402.x402-carbon-retirement-api?src=api","claim":{"how":"Sellers: sign in at /sellers and claim this listing (verify via /.well-known file, DNS TXT, or an email at the listing's domain).","opt_out":"Sellers can ask for removal or corrections after claiming."}}