Crypto Price Oracle API
for AI Agents

Why AI Agents Need a Reliable Price Oracle

Autonomous AI agents operating in crypto markets depend on accurate, low-latency price data as a foundational primitive. Whether an agent is executing a trading strategy, monitoring collateral health in a DeFi protocol, or deciding whether to sell an NFT, every financial decision starts with price.

The challenge is that crypto prices fragment across hundreds of venues — centralized exchanges, AMMs, order-book DEXes, and perpetual markets all quote different prices at any given moment. A naive agent that reads only one source will be systematically exploited by stale quotes, front-running, and wash trades.

Purple Flea's price oracle aggregates feeds from 50+ DEX and CEX sources, applies outlier filtering, and exposes clean endpoints purpose-built for agent consumption. You get the aggregated mid-price, confidence intervals, and volume-weighted averages — not raw exchange ticks that require additional processing.

Price Feed Features

Supported Assets and Markets

Purple Flea's price oracle covers a comprehensive universe of crypto assets, from the largest blue chips to long-tail ERC-20 tokens with low liquidity:

• Layer 1 assets: BTC, ETH, SOL, AVAX, BNB, MATIC, ATOM, DOT, ADA, XRP, and 200+ more
• Stablecoins: USDC, USDT, DAI, FRAX, LUSD, crvUSD — with depeg monitoring flags
• ERC-20 tokens: 10,000+ tokens indexed from Uniswap v2/v3, SushiSwap, Curve, Balancer, and other major DEXes
• Solana SPL tokens: Full coverage via Jupiter aggregator pricing
• Perpetual markets: 275 markets across Hyperliquid, GMX, dYdX, Drift, and Synthetix — including mark price and funding rate
• Liquidity pool tokens: LP token pricing for major Uniswap/Curve pools, computed from underlying reserves

API Endpoints

Code Examples

Fetch ETH Spot Price

const PURPLE_FLEA_KEY = 'pf_your_api_key_here';

async function getEthPrice() {
  const res = await fetch(
    'https://purpleflea.com/api/price/ETH',
    { headers: { 'Authorization': `Bearer ${PURPLE_FLEA_KEY}` } }
  );
  const { price, timestamp, source_count } = await res.json();

  console.log(`ETH: $${price} (aggregated from ${source_count} sources)`);
  // ETH: $2847.23 (aggregated from 47 sources)

  return price;
}

Batch-Fetch Portfolio Prices

async function valuatePortfolio(holdings) {
  // holdings = { ETH: 2.5, BTC: 0.1, USDC: 5000, ARB: 1000 }
  const tokens = Object.keys(holdings).join(',');
  const res = await fetch(
    `https://purpleflea.com/api/price/batch?tokens=${tokens}`,
    { headers: { 'Authorization': `Bearer ${PURPLE_FLEA_KEY}` } }
  );
  const { prices } = await res.json();

  let totalUsd = 0;
  for (const [token, amount] of Object.entries(holdings)) {
    totalUsd += amount * prices[token];
  }

  return { totalUsd, prices };
}

7-Day OHLCV for Technical Analysis

async function getWeeklyOHLCV(token) {
  const res = await fetch(
    `https://purpleflea.com/api/price/ohlcv?token=${token}&interval=1h&limit=168`,
    { headers: { 'Authorization': `Bearer ${PURPLE_FLEA_KEY}` } }
  );
  const { candles } = await res.json();
  // candles = [{ t, o, h, l, c, v }, ...]

  const high7d = Math.max(...candles.map(c => c.h));
  const low7d  = Math.min(...candles.map(c => c.l));
  console.log(`${token} 7d range: $${low7d} – $${high7d}`);

  return candles;
}

Agent Use Cases

Rate Limits and Pricing

Related APIs and Tools

The price oracle is one component of Purple Flea's full financial infrastructure suite for AI agents.