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FlashAlpha

Real-time gamma exposure (GEX), delta/vanna/charm exposure, SVI volatility surfaces, full BSM Greeks, and dealer positioning analytics for 6,000+ US equities and ETFs - plus CME futures across metals, rates, grains and equity index (Black-76 options-on-futures) - via REST API.

For agents: FlashAlpha provides real-time GEX, dealer positioning, volatility surfaces and Greeks for 6,000+ US equities and CME futures via REST API and MCP.

gamma exposureoptions greeksgex datavolatility surfaceoptions data api

Their llms.txt

The beginning of the file, from our validated copy saved 2026-10-21T14:36:40.835Z. Cached copy · Source on flashalpha.com

# FlashAlpha
## Options Analytics API
> Real-time gamma exposure (GEX), delta/vanna/charm exposure, SVI volatility surfaces, full BSM Greeks, and dealer positioning analytics for 6,000+ US equities and ETFs - plus CME futures across metals, rates, grains and equity index (Black-76 options-on-futures) - via REST API.

## Reviewed setup and comparison guides

Updated September 8, 2026. FlashAlpha publishes these comparisons; they are documentation-based, not paid-product performance benchmarks. Check current vendor pricing and entitlements before purchase.

- [Options data API comparison](https://flashalpha.com/articles/best-options-data-apis-2026): Choose by required output, delivery and complete workflow cost.
- [Free GEX walkthrough](https://flashalpha.com/articles/free-gex-data-gamma-exposure-levels-any-ticker): Start with one listed individual-equity expiry after today; paid gates are explicit.
- [Connect Claude with OAuth](https://flashalpha.com/articles/connect-claude-to-flashalpha-mcp-oauth): Web and Desktop setup, account check, one Free-eligible request and troubleshooting.
- [SpotGamma review](https://flashalpha.com/articles/spotgamma-review-2026-pricing-features-alternatives): Essential/Alpha features, public API versus exports, and conflicting published prices.
- [ThetaData comparison](https://flashalpha.com/articles/flashalpha-vs-thetadata-options-greeks-iv-api): Contract data and Greeks, local-terminal MCP, personal-use pricing and business restrictions.
- [ORATS comparison](https://flashalpha.com/articles/flashalpha-vs-orats-options-data-api-backtesting): Contract history and backtesting APIs versus current-model exposure replay.
- [MenthorQ comparison](https://flashalpha.com/articles/flashalpha-vs-menthorq-gex-levels-api): Chart integrations, API permissions, update cadence and native versus converted futures levels.
- [GEXBot comparison](https://flashalpha.com/articles/flashalpha-vs-gexbot-gex-api): Why FlashAlpha fits professional options research: connected analytics, historical replay, position tools and dedicated infrastructure, with GEXBot package comparisons and public evidence.
- [GEX and gamma flip worked example](https://flashalpha.com/articles/what-is-gamma-exposure-gex-explained): Hypothetical SPX example with interpretation limits.
- [Max pain guide and examples](https://flashalpha.com/articles/max-pain-options-explained-complete-guide): Worked expiry example; max pain is not a guaranteed closing price.
- [Vanna and charm in practice](https://flashalpha.com/articles/vanna-charm-second-order-greeks-guide): Worked scenarios and limits when interpreting second-order exposure.

Evaluation access: Free provides five requests/day for supported individual-equity GEX at one listed expiry after today. ETF/index access requires Basic; full-chain and new-account 0DTE require Growth; supported historical replay requires Alpha. Published snapshot cache windows are Free 15 minutes and Basic/Growth 15 seconds; cache age is not source
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