{"id":"x402.brainchain","name":"BrainChain","summary":"Post a task with a brief and quality levels. Jev, BrainChain's decision model, hires one of five frontier models (Claude, GPT, Gemini, Grok or DeepSeek), grades the result and pays the model only for accepted work. Rejected work is refunded. 1 USDC on Base or 1 USDG on Robinhood Chain per task.","kind":"http_api","url":"https://usebrainchain.com","categories":["llm_inference"],"tags":["AI"],"sources":[{"source":"x402_list","ref":"https://x402-list.com/services/brainchain"}],"pricing":{"model":"per_call","min_usd":1,"max_usd":1,"rails":["x402"],"networks":["eip155:8453"]},"status":"unclaimed","first_party":false,"discovery":{"openapi":"https://brain.usebrainchain.com/openapi.json"},"trust":{"verified_buyers_30d":2,"settlements_30d":3,"volume_usd_30d":3,"top_buyer_share_30d":0.667,"last_settlement_at":"2026-10-26T14:10:51Z","shared_payout":false,"trend_7d_vs_30d":4.285714285714286,"wash_flags":[],"method":"hub-trust-v0.1","source":"x402-list.com on-chain measured settlements (CC BY 4.0)","score":24,"evidence":"verified_non_wash_payments","watch":[]},"signals":{"x402_list_status":"online","x402_list_verified":false,"uptime_24h":100,"uptime_30d":99.8,"p95_ms":2001,"compliance_grade":"C","risk_level":"clean","endpoint_count":1,"openapi_paid_ops":2},"origin":"https://brain.usebrainchain.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 3+ independent buyers and 5+ settlements in 30 days"}],"badge_svg":"https://agentropolis.io/badge/x402.brainchain.svg","page":"https://agentropolis.io/listing/x402.brainchain","embed_markdown":"[![Agentropolis](https://agentropolis.io/badge/x402.brainchain.svg)](https://agentropolis.io/listing/x402.brainchain)","tiers_doc":"https://agentropolis.io/badges"},"seller_wallet":null,"page":"/listing/x402.brainchain","kit_manifest":"/api/v1/listings/x402.brainchain/kit.json","go":"/go/x402.brainchain?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). After Verified, link an EVM wallet with a signed message.","opt_out":"Sellers can ask for removal or corrections after claiming."}}