Max Pain per expiration — the strike that minimizes total option value (where most options expire worthless), a magnet the price tends to converge toward at expiration.

Plan: Free (1 symbol, 15-min delay) and up.

Args: symbol: Underlying ticker, e.g. "AAPL", "SPY", "NDAQ". expiration: Unix expiration timestamp for a single expiry, or "all" for every expiration (slower, complete). Omit for the nearest expiry.

Returns the raw MaxPainResponse JSON: symbol, spotPrice, timestamp, and results[] with maxPainStrike, totalPainAtMax, spotDistance, spotDistancePct.

Black-Scholes Greeks (Delta, Gamma, Theta, Vega, Rho) plus theoretical price and mispricing for every contract in the chain.

Plan: Trader and up.

Args: symbol: Underlying ticker. expiration: Unix timestamp of a specific expiry, or "all". Omit for the nearest expiry. range: Pass "atm" to restrict the chain to at-the-money contracts. moneyness: A "low,high" pair (e.g. "0.9,1.1") to filter contracts by strike/spot ratio. limit: Cap the number of contracts returned (per side).

Returns GreeksResponse JSON: symbol, spotPrice, timestamp, and contracts[] each with delta/gamma/theta/vega/rho, iv, theoreticalPrice, mispricing, inTheMoney.

Gamma & Delta Exposure (GEX/DEX) per strike, plus total Net GEX and the Gamma Flip level (strike where Net GEX crosses zero — a regime transition). Positive Net GEX = dealers long gamma (price pins); negative = moves amplified.

Plan: Trader and up.

Args: symbol: Underlying ticker. expiration: Unix timestamp of a specific expiry, or "all". Omit for the nearest expiry. symbols: Optional comma-separated list for a multi-symbol GEX request (e.g. "SPY,QQQ,IWM"); when set it takes precedence over symbol.

Returns GEXResponse JSON: symbol, spotPrice, timestamp, totalNetGEX, gammaFlip, and strikes[] with callGEX/putGEX/netGEX and callDEX/putDEX/netDEX.

Unusual options activity detection — contracts with abnormally high volume relative to open interest, typically signalling institutional/"smart money" positioning.

Signals: unusual_volume (high: Vol/OI ≥ 3.0, medium: ≥ 1.5) and opening_position (Vol ≥ 50 with OI = 0). Contracts with volume < 10 are noise.

Plan: Trader and up.

Args: symbol: Underlying ticker. expiration: Unix timestamp of a specific expiry, or "all". Omit for the nearest expiry.

Returns FlowResponse JSON: symbol, spotPrice, timestamp, and signals[] each with contractSymbol, type, strike, expiration, dte, volumeOIRatio, iv, signal, severity.

Full analytics dashboard for a symbol in one call: sentiment, GEX summary, max pain, expected moves, IV surface, term structure and top unusual flow. The cheapest way to get everything for a symbol at once.

Plan: Pro and up.

Args: symbol: Underlying ticker. expiration: Unix timestamp of a specific expiry, or "all" (recommended for the full dashboard). Omit for the nearest expiry.

Returns OverviewResponse JSON: symbol, spotPrice, timestamp, riskFreeRate, dividendYield, sentiment, gexSummary, maxPain[], expectedMoves[], termStructure[], ivSurface[], topFlow[].

Compact analytics snapshot for a symbol — a lighter-weight summary than the full overview, suitable for quick checks and cards.

Args: symbol: Underlying ticker. expiration: Unix timestamp of a specific expiry, or "all". Omit for the nearest expiry.

Returns the SnapshotResponse JSON as computed by the analytics engine.

Key options-derived price levels for a symbol (support/resistance style levels from gamma and open-interest structure).

Args: symbol: Underlying ticker. expiration: Unix timestamp of a specific expiry, or "all". Omit for the nearest expiry.

Returns the LevelsResponse JSON as computed by the analytics engine.

Vanna & Charm Exposure (VEX) — the second-order dealer Greeks. Vanna is how dealer delta shifts as implied volatility moves (∂Delta/∂IV); Charm is how it shifts as time passes (∂Delta/∂Time, i.e. delta decay). These are the flows behind OPEX drift and end-of-day drift, sitting one layer beneath GEX.

Plan: Pro and up.

Args: symbol: Underlying ticker. expiration: Unix timestamp of a specific expiry, or "all". Omit for the nearest expiry.

Returns VEXResponse JSON: symbol, spotPrice, timestamp, totalNetVEX ($ delta shift per +1% IV move), totalNetCharm ($ delta shift per day), and strikes[] with callVEX/putVEX/netVEX and callCharm/putCharm/netCharm.

Volatility structure — the skew across strikes and the term structure across expirations, with plain-English reads. Skew (25-delta put IV minus call IV) shows where demand/fear sits; term slope (back ATM IV minus front) shows contango (calm) vs backwardation (near-term event stress).

Plan: Trader and up.

Args: symbol: Underlying ticker. expiration: Unix timestamp of a specific expiry, or "all". Omit for the nearest expiry.

Returns VolStructureResponse JSON: symbol, spotPrice, timestamp, skew[] (per expiration: atmIV, skew25Delta, read), termStructure[] (ATM IV vs DTE), skewRead, termRead, and termSlope (back − front ATM IV; <0 = backwardation).

0DTE focus panel — isolates only today's expiring contracts and computes their GEX, gamma flip, max pain, expected move and a pin-risk read. On an expiration day, that day's dealer gamma dominates the intraday tape: positive gamma pins price toward max pain, negative gamma amplifies moves.

Plan: Pro and up.

Args: symbol: Underlying ticker (index/ETF names like SPY/QQQ have daily expiries; most single names do not).

Returns ZeroDTEResponse JSON: symbol, spotPrice, timestamp, expiration, dte, totalNetGEX, gammaFlip, maxPainStrike, maxPainDistPct, expectedMovePct, upperBound, lowerBound, pinRisk, read, and isTrue0DTE. When isTrue0DTE is false nothing expires today (weekend / no daily expiry) and the panel falls back to the nearest expiration with pinRisk "n/a" — it never fakes a pin.

Intraday gamma-regime tracker — a time-series of Net GEX, spot, the gamma flip and the regime label ("positive"/"negative") through the session, plus the timestamp of the last regime flip. Positive gamma = dealers dampen moves (range-bound); negative = dealers amplify (trending/volatile).

Plan: Pro and up.

Args: symbol: Underlying ticker. date: Optional session date as "YYYY-MM-DD" (US/Eastern). Omit for today.

Returns the intraday GEX JSON: symbol, date, regime (current), flippedAt (unix ts of the last regime change today, 0 = none), flippedFrom (prior regime), points[] (each with ts, spot, netGEX, gammaFlip, regime) and updatedAt. Note: this endpoint takes date, not expiration.

Authenticated track-record detail — the day-by-day report card behind the public accuracy headline. For each scored day it lists the level published that morning (call_wall / put_wall / max_pain / expected_move) and whether the session respected it: the receipts behind the percentage.

Plan: Pro and up. (The public, aggregate version is the keyless track_record tool.)

Args: symbol: Optional ticker to filter the report to one name; omit for all scored symbols.

Returns the detail JSON: days, outcomes[] (newest first — each with date, symbol, spotOpen, dayHigh, dayLow, dayClose, level, value, held, detail) and updatedAt.

List the available commercial plans with prices, limits and included routes (Free / Trader / Pro / Institutional). Public — no key needed.

Use this to explain to the user which analytics their plan unlocks, or why a call returned 402/403.

Service health check: returns {status, supabase, stripe}. Public — no key needed. Use to verify GREEKS_BASE_URL is reachable before other calls.

Public options screener across the curated watchlist (~26 liquid names: SPY, QQQ, AAPL, NVDA, TSLA, …). Returns a per-symbol row with spot price, sentiment and headline analytics — the fastest way to DISCOVER which symbols are interesting before drilling in with the authenticated analytics tools.

Public — no key needed (IP rate-limited). Takes no arguments; the watchlist is fixed server-side.

Returns the screener JSON (rows[] of symbol/spotPrice/sentiment/…).

Public GEX-by-strike heatmap for a watchlist symbol (no key needed, IP rate-limited, cached ~5 min). A lightweight, unauthenticated way to see gamma exposure per strike without a plan.

Args: symbol: A watchlist ticker (SPY, QQQ, AAPL, NVDA, TSLA, …). Defaults to SPY. Symbols outside the public watchlist return an error — use the authenticated get_gex for arbitrary symbols. expiry: Optional Unix expiration timestamp; omit for the nearest expiry.

Returns the heatmap JSON: symbol plus GEX by strike.

Public track record — aggregated accuracy of the published analytics over roughly the last 35 days (per-symbol daily snapshots vs realized high/low/ close). Use it to gauge how the signals have performed historically.

Public — no key needed. Takes no arguments.

Returns the track-record JSON as computed server-side (updatedAt + records).