Crypto & Blockchain

SYNTHORA market-dominance: BTC and ETH market dominance contrasted between TWO independent providers (CoinGecko and Coinlore), reporting the discrepancy in percentage points and a confidence grade — you get not just the number but whether the number can be trusted. Deterministic, Ed25519-signed. $0.05 USDC on Base.

SYNTHORA forex-latest: fX reference rate contrasted between the ECB official fixing (set once daily) and the live market rate, reporting the separation between them: how far the market has moved since the fixing, which is the only actionable part of an exchange rate.

SYNTHORA binance-ticker24: 24h ticker that places the current price INSIDE its own 24h range — not just the last trade, but where it sits between the period high and low, with the distance to each end and the direction of travel. Deterministic, Ed25519-signed. Input: trading pair symbol (e.g. BTCUSDT).

Real-time and historical OHLCV candles (open/high/low/close/volume) for any crypto pair, any interval. For backtesting and signal agents. Free source. $0.01 USDC via x402 on Base. SYNTHORA. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

Crypto spot price as the median of three independent public exchange tickers (Binance, Coinbase, Kraken). Every single quote, the spread and the timestamp are disclosed, so the median can be recomputed by the buyer. Refuses to answer from fewer than two live sources. Query: symbol (BTC, ETH, SOL, ...). $0.001 per call, signed receipt included.

Trending token and sector detection with narrative clustering and social momentum.

Screen a person, company, or crypto wallet address against the OFAC SDN list and the UN Security Council Consolidated List in one call. Returns matches with source list, sanction programs, alias matched, and match type (exact/token/address), plus list freshness metadata. Query by name= and/or address=. Public government data (US Treasury, UN).

Deployer address and creation transaction for a contract address, from Etherscan's V2 API -- who deployed it and when, pairs naturally with /contract-source. A non-contract or unrecorded address returns found=false rather than an error. $0.01/call.

Rolling correlation between a crypto asset's daily returns and a stock/index ticker's (default SPY) over a lookback window (default 90 days, range 14-365) -- a cross-asset signal, e.g. is ETH still trading like a risk asset correlated with QQQ. Combines CoinGecko and Yahoo Finance daily closes. $0.01/call.

Recent ERC-20 token transfer events for a wallet address on Ethereum in one call: token name/symbol, decimal-adjusted value, and counterparties -- from Etherscan's V2 API. Optionally filter to one token via contract_address. Supports optional limit (default 25, max 100). $0.01/call.

Crypto perpetual-futures leverage/squeeze-risk signal in one call: funding rate, open interest, and long/short account ratio, each with recent history and a rising/falling/flat trend -- how crowded and leveraged one side of the market has gotten, the derivatives analogue of stock short interest. Works for any OKX-listed perpetual (BTC, ETH, SOL, and more). From OKX. $0.01/call.

A single prediction market's current odds, volume, and close date by exact ID -- from Polymarket (slug) or Kalshi (ticker), whichever you pass as `source`. Pairs with /prediction-markets: search there first to find an ID, then re-fetch it here for the freshest odds without re-searching. $0.01/call.

Native ETH balance for any wallet address on Ethereum, from Etherscan's V2 API. Returns both raw wei and a rounded human-readable ETH amount. $0.01/call.

Retrieve official recent SEC filing metadata and primary-document links for a public-company ticker.

LastLook Data — refinance signal bundle: current 30yr and 15yr mortgage rates, 52-week range, MBS spread, rate trend, and refi break-even threshold. Tells an AI agent whether a borrower should consider refinancing.

Tx Intent Classifier: decodes the REAL intent of an on-chain transaction (Base/Ethereum) and returns an Ed25519-signed risk verdict (safe/review/suspicious/dangerous). Catches unlimited approvals, opaque selectors, value-to-contract, reverted tx. POST {"tx_hash":"0x..","chain":"base"} or {"to":"0x..","data":"0x.."}.

SYNTHORA macro intel bundle: 7 live macro/market datasets in ONE call (commodity macro, market sentiment, stablecoin supply, ECB forex fixing vs market, DeFi TVL ranking, top crypto, bitcoin fees). Cheaper than buying each separately. Partial degradation (never fails whole), Ed25519-signed. First 3 calls FREE per wallet via X-WALLET header. 0.10 USDC via x402 on Base. SYNTHORA.

Assess the security risk of a cross-chain bridge before routing funds through it. Combines live DefiLlama TVL and audit status with the full bridge-hack incident history and known-exploit analysis into a 0-100 risk score, a safe/caution/high_risk/critical signal and explicit risk factors. Use it for bridge risk and cross-chain due diligence. Ed25519-signed. 0.002 USDC on Base.

SYNTHORA cryptonews: real-time crypto news headlines with sentiment, ranked by importance. Aggregates keyless RSS feeds (CryptoPanic, CoinDesk, CoinTelegraph, Decrypt, Bitcoin Magazine) into deduplicated, freshness-and-source-weighted top headlines, each scored with a lexical bull/bear sentiment (very_bullish.very_bearish) plus an overall market sentiment. Filter by asset (BTC, ETH, SOL, XRP, and more) to get only headlines about that coin. Built for trading and quant agents that need a cheap, fast crypto news + sentiment pulse. Ed25519-signed.

EVM wallet activity feed - newest-first transfers, swaps, approvals, NFT movements, and decoded contract calls

ERC-20 token holders by chain - ranked by balance descending with first-acquired and transfer-initiation flags

NFTs held by a wallet - collection, floor price, metadata

Social volume - Twitter/Farcaster mention count for a token

Detailed pool info - APY history, TVL, IL risk, reward tokens