silverback-defi

⚠Review·Scanned 2/18/2026

This skill provides DeFi intelligence and pays per request via x402 on Base, calling https://x402.silverbackdefi.app/api/v1/chat. It requires a wallet private key via SILVERBACK_PRIVATE_KEY or config.json and runs node scripts/silverback.mjs, performing local signing and network requests.

from clawhub.ai·v410e975·11.9 KB·0 installs
Scanned from 3.1.0 at 410e975 · Transparency log ↗
$ vett add clawhub.ai/ridingliquid/silverback-defiReview findings below

Silverback DeFi Intelligence

Silverback provides real-time DeFi intelligence via 26 x402-paid endpoints on Base chain. Every request pays with USDC — no API keys, no subscriptions. Your wallet pays per call automatically via the x402 protocol.

Security

  • This skill signs x402 USDC micropayments (max $0.05 per call for chat).
  • The x402 protocol only signs EIP-3009 transferWithAuthorization for the exact amount in the server's 402 response. It cannot sign arbitrary transactions.
  • The script ONLY calls x402.silverbackdefi.app/api/v1/chat. No other endpoints or domains.
  • Model invocation is disabled — only you can trigger this skill.
  • Use a dedicated wallet with minimal USDC. Do NOT use your main wallet.

Setup

  1. Install dependencies:
cd silverback-defi && npm install
  1. Set your wallet private key as an environment variable (recommended):
export SILVERBACK_PRIVATE_KEY=0xYOUR_DEDICATED_WALLET_KEY

Or as a fallback, create config.json in the skill root:

{
  "private_key": "0x_YOUR_WALLET_PRIVATE_KEY_HERE"
}

Your wallet needs USDC on Base. The chat endpoint costs $0.05 per call.

Usage

node scripts/silverback.mjs "What are the top coins right now?"
node scripts/silverback.mjs "Analyze ETH technically"
node scripts/silverback.mjs "Where can I earn yield on USDC?"
node scripts/silverback.mjs "Is 0x558881c4959e9cf961a7E1815FCD6586906babd2 safe?"
node scripts/silverback.mjs "Show me whale activity on VIRTUAL"

What This Skill Can Do

The script calls Silverback's /api/v1/chat endpoint ($0.05 USDC per call). The AI agent has access to 26 tools:

DeFi Services

ToolDescription
swapNon-custodial Permit2 swap — returns EIP-712 data for client signing
swap-quoteOptimal swap routing with price impact on Base chain
pool-analysisLiquidity pool health — TVL, volume, fees, IL risk
technical-analysisRSI, MACD, Bollinger Bands, trend detection, trading signals
defi-yieldYield opportunities across lending, LP, and staking protocols
backtestBacktest a trading strategy

Market Data

ToolDescription
top-coinsTop cryptocurrencies by market cap with prices and 24h changes
top-poolsBest yielding liquidity pools on Base DEXes
top-protocolsTop DeFi protocols ranked by TVL
trending-tokensTrending tokens on CoinGecko
gas-priceCurrent Base chain gas prices
dex-metricsDEX trading volume and metrics
token-metadataToken details and contract info
correlation-matrixToken price correlation analysis

Intelligence

ToolDescription
token-auditSmart contract security audit — honeypot detection, ownership, taxes
whale-movesLarge wallet movement tracking
arbitrage-scannerCross-DEX arbitrage opportunities
agent-reputationERC-8004 on-chain reputation scores for AI agents
agent-discoverDiscover trusted AI agents by capability

Chat

ToolDescription
chatAI chat with all intelligence tools — ask anything

How x402 Payment Works

  1. Script calls x402.silverbackdefi.app/api/v1/chat
  2. Server returns HTTP 402 with exact USDC amount ($0.05)
  3. @x402/fetch signs an EIP-3009 transferWithAuthorization for that amount
  4. Request retries with the signed payment in the X-Payment header
  5. Server verifies on-chain, returns data

The signing is scoped to the exact amount and recipient specified by the server. The x402 library does not sign arbitrary transactions.

MCP Server

For Claude Desktop, Cursor, or Claude Code integration, use the MCP package:

npm install -g silverback-x402-mcp

See: https://www.npmjs.com/package/silverback-x402-mcp

Links