{"endpoint":"/api/nft/collection-risk","method":"POST","service_trust":"https://defi-shield-hazel.vercel.app/api/trust-signal","free_check":{"endpoint":"https://defi-shield-hazel.vercel.app/api/free/token-check","method":"POST","price":"FREE","note":"Try before you buy — free basic token safety check with risk math."},"also_available_on":{"virtuals_acp":{"agent":"Authensor","agent_id":18805,"offerings":["pre_trade_safety","token_deep_scan","wallet_report","batch_seal"],"marketplace":"https://app.virtuals.io/acp/scan/agents","note":"Same service, accessible to 18,000+ autonomous agents on Virtuals Protocol."},"mcp_server":{"package":"devsecure-mcp","install":"npx devsecure-mcp","tools":67,"note":"Install as MCP server in Claude, Cursor, or any MCP-compatible client for direct tool access."},"bazaar":"https://defi-shield-hazel.vercel.app/.well-known/x402","agent_card":"https://defi-shield-hazel.vercel.app/.well-known/agent-card.json"},"powered_by":"DeFi Shield by Authensor","price":"$0.50","description":"NFT collection risk assessment using on-chain transfer analysis. Scores holder concentration, wash trading, activity levels, and collection age from BaseScan ERC721 data.","llm_usage_prompt":"Call this endpoint BEFORE buying into or recommending any NFT collection to assess its legitimacy and risk. Provide the collection_address (NFT contract). Returns a 0-100 risk_score with risk_level (LOW/MEDIUM/HIGH), detailed risk_factors explaining each score component, holder_count_estimate, top_holder_concentration_pct, wash_signals with specific pattern descriptions, volume_24h_transfers, unique_traders_24h, and collection age_days. Data comes from BaseScan ERC721 transfer events (up to 1000 most recent). Costs $0.50.","params":{"collection_address":"string — The NFT contract address (0x + 40 hex chars)","chain":"string (optional) — Chain name, default 'base'"},"exampleRequest":{"collection_address":"0xd4307e0acd12cf46fd6cf93bc264f5d5ae62f476"},"exampleResponse":{"collection_address":"0xd4307e0acd12cf46fd6cf93bc264f5d5ae62f476","chain":"base","risk_score":45,"risk_level":"MEDIUM","risk_factors":["Moderate wash trading rate (12%)","Young collection (15 days old)"],"holder_count_estimate":342,"top_holder_concentration_pct":35.2,"whale_count":5,"volume_24h_transfers":28,"unique_traders_24h":19,"wash_signals":["Round-trip wash rate: 12%"],"wash_trading_pct":12,"suspicious_wallets":["0xabc..."],"age_days":15,"collection_name":"Example NFT","total_transfers_analyzed":1000,"response_time_ms":850}}