Pay-per-use DeFi intelligence: market data, technical analysis, swaps, and on-chain analytics via x402 micropayments.
What it does
Silverback is a suite of 11 DeFi intelligence and execution endpoints accessible via the x402 micropayment protocol. The API covers market data (top coins), technical analysis (RSI, MACD, Bollinger Bands), DeFi yield opportunities, cross-DEX arbitrage scanning, token security audits, whale transaction tracking, wallet portfolio lookups, liquidity pool analysis, swap quotes (Base and Solana via Jupiter), and token holder analytics. Payments are made in USDC on Base, Solana, or SKALE, with a 15% discount available when paying with the $BACK token via Permit2 on Base.
Pricing is tiered by endpoint complexity: execution endpoints (swap) cost $0.05 per call, heavy analysis endpoints (technical-analysis, defi-yield, arbitrage-scanner) cost $0.03, intelligence endpoints (token-audit, whale-moves, wallet-portfolio) cost $0.02, and lighter analysis endpoints (pool-analysis, swap-quote, jupiter-quote, holder-analytics) cost $0.01. All responses return JSON with a `success` boolean field. Token identifiers use CoinGecko IDs for market data endpoints and contract addresses (0x format) for on-chain endpoints. Chain defaults to Base (chain ID 8453) unless specified.
Note: The specific `/api/v1/top-coins` endpoint listed here returned 404 during probing on both GET and POST, though the broader Silverback API origin is live (root returns 200) and the OpenAPI spec documents 11 other endpoints. The top-coins endpoint may have been renamed, removed, or may require a different request format not tested during probing.
Capabilities
Use cases
- —AI agents autonomously gathering DeFi market intelligence before executing trades
- —Screening tokens for security risks (honeypot detection, tax analysis) before investment
- —Monitoring whale wallet movements to detect large market-moving transactions
- —Comparing swap quotes across DEXes on Base and Solana to find optimal routes
- —Analyzing liquidity pool health, APR, and TVL for yield farming decisions
Fit
Best for
- —Autonomous DeFi agents that need pay-per-call intelligence without subscriptions
- —Developers building crypto trading bots requiring technical analysis and swap routing
- —On-chain analysts who need wallet portfolio and holder distribution data
Not for
- —Applications needing high-frequency, sub-second trading data (pay-per-call latency)
- —Users who need free or subscription-based access rather than per-call micropayments
- —Non-crypto use cases with no need for DeFi or blockchain data
Quick start
# 1. Send request — receive 402 with payment challenge
curl -X POST https://x402.silverbackdefi.app/api/v1/technical-analysis \
-H 'Content-Type: application/json' \
-d '{"token": "bitcoin", "timeframe": "7"}'
# 2. Pay via x402 (sign USDC authorization), then resend with payment proof headerExample
Request
{
"token": "bitcoin",
"timeframe": "7"
}Endpoint
Quality
The specific /api/v1/top-coins endpoint returned 404 on both GET and POST, so it cannot be confirmed as live. The broader Silverback API origin is live and a detailed OpenAPI spec with 11 other endpoints is available, but no response examples or top-coins-specific schema exist. The endpoint may have been removed or renamed.
Warnings
- —The /api/v1/top-coins endpoint returned 404 on both POST and GET — it may have been removed, renamed, or require a different path.
- —No response schema or example responses are provided in the OpenAPI spec for any endpoint.
- —The /docs URL returned 'Cannot GET /docs' — external documentation at docs.silverbackdefi.app was not crawled.
- —No actual 402 challenge was captured for this specific endpoint, so payment parameters (exact price, accepted networks) for top-coins are unconfirmed.
Citations
- —Silverback provides 11 pay-per-use DeFi intelligence endpoints via x402 micropayments with USDC on Base, Solana, and SKALE.https://x402.silverbackdefi.app
- —Pricing tiers: Execution $0.05, Heavy analysis $0.03, Intelligence $0.02, Analysis $0.01.https://x402.silverbackdefi.app
- —$BACK token payments via Permit2 on Base offer a 15% discount.https://x402.silverbackdefi.app
- —The /api/v1/top-coins endpoint returned 404 on both POST and GET probes.https://x402.silverbackdefi.app/api/v1/top-coins