Crypto & Blockchain

Historical token prices by DefiLlama — token price(s) at a given unix timestamp by chain:address or coingecko:id.

Token price chart by DefiLlama — an evenly-spaced historical price series for one or many coins over a time window.

First recorded token price by DefiLlama — the earliest known price and timestamp for one or many coins.

Real-time cryptocurrency price

Scan for cross-platform prediction market arbitrage opportunities between Polymarket and Kalshi using Gen3 Neuro-Symbolic NLI matching. Identifies price discrepancies where the same event is priced differently across platforms, creating risk-free edge.

Phygital Arbitrage Screener: cross-references Courtyard.io tokenized card listings against TCGPlayer raw prices to find BUY/SELL signals. Covers 267K+ vaulted, insured, tradeable cards on Polygon.

Grade-or-Not Decision Engine: answers 'will grading this trading card make me money?' by combining AI grade prediction with PSA fee schedules, shipping costs, and graded market values to calculate expected ROI. Returns a clear GO/NO-GO verdict with best-case, predicted, and worst-case profit scenarios.

Per-block base-fee + blob-fee history export — the top-requested feed on the Seneschal data board. Up to 1024 blocks per call (?blocks=, default 300) straight from consensus via eth_feeHistory, as CSV or JSON lines (?format=csv|jsonl). Columns: block, base fee (wei + gwei), gas_used_ratio, blob base fee, blob_gas_used_ratio. Page backwards with ?newest=<block>; headers carry the consensus next-block projection. Live "gas right now" fact: GET /v1/q/base-fee ($0.001).

Cross-source crypto news intelligence with impact scoring, token mapping, and anomaly detection.

USD Coin

USD Coin

HyperNatt BTC liquidation radar — raw microstructure snapshot: magnet score, OI, long/short ratio, liquidation clusters above/below, real liquidations 1h/24h (read-only)

Get rich cryptocurrency asset snapshots for one or more asset ids or slugs.

Get rich cryptocurrency asset snapshots for one or more asset ids or slugs.

Get multi-window ROI snapshots for one or more cryptocurrency assets.

Get all-time-high cryptocurrency price snapshots and drawdown context by asset.

A Hyperliquid account's spot token balances, for any 0x address.

Live prediction-market data from Polymarket: active markets, prices, volume and liquidity via the public Gamma API. Deterministic JSON, no key. First 3 calls FREE per wallet — send header X-WALLET: 0x<addr>. No charge on upstream failure.

Crypto market sentiment: the Fear & Greed Index (0=extreme fear, 100=extreme greed) with classification, plus optional history. Query: days (1-90, default 7). Use as a contrarian signal, regime filter, or risk gauge in trading loops.

Cryptocurrencies trending on CoinGecko right now — the coins agents and humans are searching for most. Returns id, symbol, name, market-cap rank, and price data per coin. No inputs. Use for momentum scanning, narrative detection, and screener loops.

Call ECB FX rates through our metered gateway: our rate-limit budget and a 3600s cache absorb your polling, so your loop never sees a 429. Inputs: path (upstream path, e.g. /ping) and q (raw query string). Returns the upstream JSON under 'data'.

Crypto ETF Sentinel — Quarterly fee-war progression — average + median expense ratios over time across the US spot crypto ETF trading cohort. Documents how fee competition has compressed since spot Bitcoin ETF launch in Jan 2024.

Complete market brief for one crypto asset in a single $1 call — trend regime, AI sentiment, live price with 24h/7d change, and volatility risk, combined from Stelar Digital's production classifiers. For agents needing full context before a trade decision without stitching together 4 separate calls. Input: ?symbol=SOL. Output: {symbol, regime, sentiment, price, risk, generated_at, disclaimer}.

Everything in /bundle/market-brief (regime, sentiment, price, risk) plus an AI-generated synthesis connecting the signals and naming the single biggest risk factor — grounded only in the real data returned, never fabricated. For agents wanting one $2.50 call instead of a market brief plus a manual read. Input: ?symbol=SOL. Output: {symbol, regime, sentiment, price, risk, generated_at, disclaimer, analysis: {synthesis, key_risk}}.