DeFi intelligence powered by Silverback — 19 x402 endpoints on Base chain. Market data, swap quotes, technical analysis, yield opportunities, token audits, whale tracking, and AI chat. Pay per call wi
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19 x402-paid DeFi endpoints on Base chain. Pay per call with USDC — no API keys, no subscriptions. All endpoints use the x402 micropayment protocol.
Base URL:
https://x402.silverbackdefi.appAI chat with all 19 intelligence tools. Ask any DeFi question.
curl -s -X POST https://x402.silverbackdefi.app/api/v1/chat \ -H "Content-Type: application/json" \ -d '{"message": "What are the top coins right now?"}'
# Top coins by market cap curl -s -X POST https://x402.silverbackdefi.app/api/v1/top-coins \ -H "Content-Type: application/json" -d '{}'Top liquidity pools on Base
curl -s -X POST https://x402.silverbackdefi.app/api/v1/top-pools
-H "Content-Type: application/json" -d '{}'Top DeFi protocols by TVL
curl -s -X POST https://x402.silverbackdefi.app/api/v1/top-protocols
-H "Content-Type: application/json" -d '{}'Trending tokens
curl -s -X POST https://x402.silverbackdefi.app/api/v1/trending-tokens
-H "Content-Type: application/json" -d '{}'Base gas prices
curl -s -X POST https://x402.silverbackdefi.app/api/v1/gas-price
-H "Content-Type: application/json" -d '{}'Token details
curl -s -X POST https://x402.silverbackdefi.app/api/v1/token-metadata
-H "Content-Type: application/json" -d '{"token": "ETH"}'
# Swap quote with routing ($0.002) curl -s -X POST https://x402.silverbackdefi.app/api/v1/swap-quote \ -H "Content-Type: application/json" \ -d '{"fromToken": "ETH", "toToken": "USDC", "amount": "1"}'Technical analysis — RSI, MACD, Bollinger ($0.02)
curl -s -X POST https://x402.silverbackdefi.app/api/v1/technical-analysis
-H "Content-Type: application/json"
-d '{"token": "ETH"}'Backtest a strategy ($0.10)
curl -s -X POST https://x402.silverbackdefi.app/api/v1/backtest
-H "Content-Type: application/json"
-d '{"token": "ETH", "strategy": "rsi", "days": 30}'Token correlation matrix ($0.005)
curl -s -X POST https://x402.silverbackdefi.app/api/v1/correlation-matrix
-H "Content-Type: application/json"
-d '{"tokens": ["ETH", "BTC", "VIRTUAL"]}'
# Yield opportunities ($0.02) curl -s -X POST https://x402.silverbackdefi.app/api/v1/defi-yield \ -H "Content-Type: application/json" \ -d '{"token": "USDC"}'Pool health analysis ($0.005)
curl -s -X POST https://x402.silverbackdefi.app/api/v1/pool-analysis
-H "Content-Type: application/json"
-d '{"pool": "ETH/USDC"}'
# Token contract audit ($0.01) curl -s -X POST https://x402.silverbackdefi.app/api/v1/token-audit \ -H "Content-Type: application/json" \ -d '{"token": "0x558881c4959e9cf961a7E1815FCD6586906babd2"}'Whale movement tracking ($0.01)
curl -s -X POST https://x402.silverbackdefi.app/api/v1/whale-moves
-H "Content-Type: application/json"
-d '{"token": "VIRTUAL"}'Arbitrage scanner ($0.005)
curl -s -X POST https://x402.silverbackdefi.app/api/v1/arbitrage-scanner
-H "Content-Type: application/json" -d '{}'Agent reputation — ERC-8004 ($0.001)
curl -s -X POST https://x402.silverbackdefi.app/api/v1/agent-reputation
-H "Content-Type: application/json"
-d '{"agentId": "13026"}'Discover agents by capability ($0.002)
curl -s -X POST https://x402.silverbackdefi.app/api/v1/agent-discover
-H "Content-Type: application/json"
-d '{"capability": "defi"}'
Returns unsigned EIP-712 Permit2 data for client-side signing.
curl -s -X POST https://x402.silverbackdefi.app/api/v1/swap \ -H "Content-Type: application/json" \ -d '{"fromToken": "USDC", "toToken": "ETH", "amount": "10", "walletAddress": "0xYOUR_WALLET"}'
All endpoints return HTTP 402 with a USDC payment requirement. Your agent handles payment using
@x402/fetchPrices range from $0.001 to $0.10 per call. The exact amount is specified in the 402 response.
# Health check curl -s https://x402.silverbackdefi.app/api/v1/healthPricing info
curl -s https://x402.silverbackdefi.app/api/v1/pricing
Endpoint list
curl -s https://x402.silverbackdefi.app/api/v1/endpoints
For Claude Desktop, Cursor, or Claude Code:
npm install -g silverback-x402-mcp
https://www.npmjs.com/package/silverback-x402-mcp
No automatic installation available. Please visit the source repository for installation instructions.
View Installation Instructions
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