{"endpoint":"/api/chain/health","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":"$0.10","description":"Returns real-time health metrics for a specific blockchain including chain type, TVL from DeFiLlama, latest block number (for Base), gas prices, block production status, and finality time.","llm_usage_prompt":"Call this endpoint BEFORE routing transactions through a chain to verify it is healthy and active. Provide the chain name (e.g., 'base', 'ethereum', 'arbitrum'). Defaults to 'base' if omitted. Returns the chain's official name, chain ID, type (L1/Optimistic Rollup/ZK Rollup), status (healthy/active/low_activity/unknown), latest block number from BaseScan (for Base chain), current TVL in USD, gas prices in gwei (slow/standard/fast for Base), block production status, and finality time. Use this to confirm a chain is operational before sending funds, or to check TVL as a proxy for ecosystem health and security. Costs $0.10 via x402.","params":{"chain":"(optional) string -- chain name, defaults to 'base' (e.g., 'ethereum', 'arbitrum', 'optimism')"},"exampleRequest":{"chain":"base"},"exampleResponse":{"chain":"Base","chain_id":"8453","type":"Optimistic Rollup","status":"healthy","latest_block":25834921,"tvl":8500000000,"gas_gwei":{"slow":0.001,"standard":0.005,"fast":0.01},"block_production_status":"producing_blocks","finality":"~7 days challenge period","response_time_ms":380,"timestamp":"2026-03-06T12:00:00.000Z"}}