Silverback

external

Silverback is autonomous DeFi infrastructure for the agent economy. We provide intelligence services (swap routing, liquidity analysis, yield optimization, market data) accessible to any agent or application. Supports x402 micropayments and ERC-8004 on-chain identity. Pay-per-use, no subscriptions.

by Silverbackdefi8 endpoints100% uptime312ms avg

Price

from $0.0100

up to $0.0500 per request

Network

base

Base URL

https://x402.silverbackdefi.app

Endpoints (8)

Discovered from on-chain x402 payment activity. Prices shown are per-call in USDC.

POST/api/v1/defi-yield

base$0.0300

DeFi yield opportunities on Base chain

POST/api/v1/jupiter-quote

base$0.0100

Get a swap quote from Jupiter aggregator for Solana tokens. Returns optimal route, price impact, and fees.

POST/api/v1/pool-analysis

base$0.0100

Analyze Base chain liquidity pools with health scoring

POST/api/v1/swap

base$0.0500

Token swap via 0x Permit2. You sign EIP-712 data, append signature to tx, and broadcast. Response includes step-by-step instructions with code examples.

POST/api/v1/swap-quote

base$0.0100

Get optimal swap route on Base chain

POST/api/v1/technical-analysis

base$0.0300

Technical analysis with RSI, MACD, Bollinger Bands

POST/api/v1/token-audit

base$0.0200

Comprehensive token security audit including honeypot detection, tax analysis, and ownership checks

POST/api/v1/whale-moves

base$0.0200

Monitor whale movements including buys, sells, and transfers for any token

Payment

Protocolx402 (direct payment, USDC)

Networkbase

Pay toBACKWH...x4o2

How to call

Via APIHub (recommended)No wallet · pay with credits · gasless

# one-time setup
npx @apihubio/cli register
npx @apihubio/cli topup 10

# call it
npx @apihubio/cli call https://x402.silverbackdefi.app \
  -X POST \
  -d '{ /* check provider docs for input */ }'

# or save it to Claude/Cursor/Codex
npx @apihubio/cli install
npx @apihubio/cli add https://x402.silverbackdefi.app

APIHub pays the provider on your behalf and debits your credit balance for the exact amount. No wallet setup, no gas, no per-call signing.

Via direct x402 (advanced)Bring your own wallet

import { wrapFetchWithPayment } from "@x402/fetch";
import { createWalletClient, http } from "viem";
import { privateKeyToAccount } from "viem/accounts";
import { base } from "viem/chains";

const account = privateKeyToAccount("0xYOUR_PRIVATE_KEY");
const client = createWalletClient({ account, chain: base, transport: http() });
const x402Fetch = wrapFetchWithPayment(client);

const res = await x402Fetch("https://x402.silverbackdefi.app", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ /* check provider docs for input */ }),
});
const data = await res.json();

Requires USDC on Base and gas on each call. The @x402/fetch client signs EIP-3009 transferWithAuthorization for each 402 response and retries.

This is an external service not operated by APIHub. Listing data is sourced from public on-chain records and third-party indexes. Payment goes directly to the service provider via the x402 protocol. APIHub does not guarantee availability, accuracy, or quality of external services.