{"kit":"0.1","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.","categories":["llm_inference"],"tags":["AI"],"status":"unclaimed","seller":{"name":null,"domain":"brain.usebrainchain.com","claimed":false,"verify":"none"},"invoke":[],"input_schema":null,"output_schema":null,"sample":null,"offers":[{"rail":"x402","networks":["eip155:8453"],"price_usd_min":1,"price_usd_max":1,"payTo":null,"note":"Runtime 402 challenge is authoritative; verify amount and payTo before paying."}],"trial":null,"behavior":{"side_effects":"unknown","idempotent":null,"p95_latency_s":2.001,"data_retention":"unknown"},"policy":{"refund":"unknown","no_scraping":null,"consent_required":"unknown"},"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":[]},"badges":["unclaimed","paid_usage_verified"],"agentropolis":{"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"},"contact":{"a2a":null,"email":null,"messages":"roadmap: hub messaging (stub)"},"provenance":[{"source":"x402_list","ref":"https://x402-list.com/services/brainchain","attribution":"Data: x402-list.com (CC BY 4.0)"}],"_generated":"Generated by Agentropolis from public metadata. The seller has not claimed or reviewed this listing."}