Crypto & Blockchain

Returns historical OHLCV (open/high/low/close/volume) candlestick data for a stock, ETF, or index. Supports intervals from 1-minute to monthly and ranges from 1 day to max history. Use for chart analysis, trend detection, and quantitative backtesting. $0.010/call — free upstream, no API key.

Seven-lens systems theory analysis of the Bitcoin network. Returns: (1) difficulty feedback loop state + regulator lag, (2) mempool stock-flow ratio and queue depth, (3) confirmation delay at economy/priority fee tiers, (4) fee nonlinearity index and hash-rate growth curvature, (5) Nakamoto coefficient (min pools for 51% consensus), (6) self-organization score for fee market equilibrium, (7) HHI mining concentration index and decentralization grade A–F. Sourced from mempool.space — no API key r

Multi-chain DeFi portfolio scanner. Returns token holdings and USD values for any EVM wallet across Ethereum, Base, Polygon, and Arbitrum mainnet. Covers ETH, major stablecoins (USDC, USDT, DAI), WBTC, ARB, cbETH, and chain-native assets. Collapses the defi.hugen.tokyo/defi/address seam — 41 payers. $0.010/call.

Real-time movers and volume-spike leaders across all KRW-denominated markets on Upbit (South Korea's largest crypto exchange). Returns top risers, top fallers, and top volume leaders ranked by 24h change or accumulated trade value. Korean exchange data is a leading indicator frequently observed by institutional agents — the 'kimchi premium' and local retail sentiment often precede global price moves. Free upstream source (Upbit public API), covers 260+ KRW markets.

Polymarket whale intelligence for a given proxy wallet address. Returns recent prediction-market trades (market title, outcome, side, size in USDC, price, timestamp) and current open positions (title, size, avg price, current value, unrealized PnL). Infers whale tier (whale/shark/dolphin/minnow) from trade sizes. Use for copy-trading signal generation, market-sentiment cross-reference, or on-chain agent behavior profiling. Free upstream: Polymarket public data API.

Global equity snapshot: 9 major indices (Nikkei 225, Hang Seng, ASX 200, Nifty 50, Shanghai, FTSE 100, DAX, CAC 40, Euro Stoxx 50) plus DXY. Returns current level, daily % change, 52-week range context, and region posture (bullish/mixed/bearish). Free Yahoo Finance data. No API key. Overnight context for global macro agents and forex positioning. $0.010/call.

USD Coin

USD Coin

USD Coin

List X accounts your wallet owns or has shared access to (returns full credentials).

Get full identity and cluster data for an address.

Native coin balance for any address on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain, plus ERC-20 token balances (pass up to 10 contract addresses). Reads public chain state over JSON-RPC; no API keys. Amounts given raw and human-formatted. POST a JSON body like: {"chain":"base","address":"0xB86F95EF5FA904318Ea9Df3b59AdCe099b478fC4"}

Fetch a block header by number, hash, or "latest" on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain: timestamp, miner, gas used/limit, base fee, transaction count, size. Public JSON-RPC, no API keys. POST a JSON body like: {"chain":"base","block":"latest"}

Current gas price and EIP-1559 fee suggestions (base fee, priority tip, suggested max fee) on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain, in gwei. Public JSON-RPC, no API keys. POST a JSON body like: {"chain":"ethereum"}

ERC-20 token metadata — name, symbol, decimals, total supply — for any token contract on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain. Optionally include a "holder" address to also read that wallet's balance. Public JSON-RPC reads, no API keys. POST a JSON body like: {"chain":"base","address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"}

Look up a transaction and its receipt on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain: status (success/reverted/pending), from/to, value, block, nonce, gas used and price, log count, and any contract created. Public JSON-RPC, no API keys. POST a JSON body like: {"chain":"base","hash":"0xb498053e345acd227657ef2e3de7d9fd9b861d673368419c4b18cfaea20365c8"}

Fetch a block header by number, hash, or "latest" on Ethereum, Base, Arbitrum, Optimism, Polygon, or BNB Chain: timestamp, miner, gas used/limit, base fee, transaction count, size. Public JSON-RPC, no API keys. POST a JSON body like: {"chain":"base","block":"latest"}

Current USD prices for any crypto asset: majors by ticker (BTC, ETH, SOL), anything else by CoinGecko id or chain + contract address — so long-tail meme tokens work too. Up to 25 assets per call with per-asset confidence scores and timestamps. Crypto only; no equities or ETFs. POST a JSON body like: {"symbols":["BTC","ETH","pepe"]}

Convert Unix, ISO 8601, and human timestamps for $0.001 USDC with one normalized response.

Bundle/sniper detection for a Solana token via Helius: groups launch buyers by slot to flag coordinated buys (bundle/sniper clusters). Body: { mint }.

All ~30 currencies at the most recent ECB daily reference fixing, rebased to any covered currency — dated, attributed, agent-clean JSON

Chainlink native-token USD prices (ETH/BNB/POL) with round metadata

SYNTHORA Open Interest Oracle: live perpetual futures open interest, funding rates, mark price, premium and crowded long/short signal for 230+ assets via Hyperliquid. Ed25519-signed. 0.001 USDC via x402 on Base. First 3 calls FREE per wallet — send header 'X-WALLET: 0x<your Base address>' (no payment); after that per call.

USD Coin