Surface monitor Derivasys
Release Notes

Derivasys changelog.

Public release notes for the volatility surface dashboard, static documentation, API access messaging, screenshots, diagnostics, and site metadata.

Open the dashboard Read API access notes
Latest update

May 16, 2026: dashboard UX, API docs, fixed-tenor messaging, SEO links, and risk diagnostics.

Scope

Dashboard UI, documentation pages, static screenshots, API availability language, and visible contact routes.

Verification

Each listed UI/doc change is checked with the production build and lint workflow before publishing.

May 16, 2026

Changed

  • Cleaned up the dashboard shell with a more compact header, clearer Market/Fit tabs, tighter controls, and expand controls for large panels.
  • Standardized public brand casing to Derivasys across app copy, metadata, docs, SVG titles, and mailto subjects.
  • Moved API and fixed-tenor messaging into the initial onboarding/fallback copy and written documentation.
  • Added API availability language for WebSocket and REST testing, including BTC, ETH, additional currencies under testing, and fixed-tenor outputs.
  • Added a dedicated API access documentation page, linked it from the documentation nav and dashboard menu, and surfaced API testing availability in the live app.
  • Regenerated documentation screenshots with the simplified Risk Reversals/Flies layout and May 2026 maturities.
  • Simplified Market Diagnostics by removing node-vol columns and node-axis charts, pairing Risk Reversals and Flies side by side, tightening Maturity/ATM spacing, and keeping one term-structure chart under each grid.
  • Canonicalized SEO metadata, structured-data URLs, and sitemap entries to https://www.derivasys.com, while keeping visible dashboard links root-relative.
  • Added historical client-facing API change notes to the API documentation page.
  • Aligned public documentation styling more closely with the main Derivasys landing page, including desktop navigation, blue primary CTAs, a visual hero treatment, and a timeline-style changelog layout.

Fixed

  • Made the SVI Fly Grid accept common fly and butterfly payload shapes such as FLY25, BF25, 25D_FLY, butterfly_25, 25, and 25D.
  • Stopped empty surface snapshots from creating blank fly rows when no fly metrics or fly nodes are present.
  • Restored Flies diagnostics when the feed only provides fly node vols by deriving FLYxx from matching put, call, and ATM node vols.

Verification

  • npm run build
  • npm run lint