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Version 2.0.0.7 Released ​

Date: 30th Apr 2026

Real-Time Performance Update: WebSocket Subscribe Batching across Dhan, Fyers & Upstox, Sandbox Event-Driven UI Updates, IIFL Capital Market Data Expansion & Flow Editor Stability

This is a stability and performance update covering 26 commits since v2.0.0.6. The headline change is a unified rewrite of WebSocket subscribe handling across three major brokers (Dhan, Fyers, Upstox) instead of N per-symbol POSTs that hit broker rate limits and occasionally lost ticks for freshly-placed orders, subscriptions are now coalesced into batched grouped flushes. This closes a long-standing class of bugs reported across issues #1304 / #1314 / #1318 where ticks for newly-placed sandbox orders never reached the execution engine, manifesting as "price oscillates through the trigger but the order never fires." Combined with sandbox event-driven UI updates over the existing analyzer_update SocketIO channel, the OrderBook / TradeBook / Positions panes now refresh the moment a fill commits.

Highlights

  • WebSocket subscribe batching (Dhan, Fyers, Upstox) — Per-symbol subscribe POSTs are now collapsed into single grouped flushes per broker. Closes the entire class of "freshly-placed order is invisible to the sandbox execution engine" bugs (issues #1304, #1314, #1318).
  • Sandbox event-driven UI updates — Engine-internal fills, auto-square-off, and T+1 settlement now emit on the existing analyzer_update SocketIO channel. OrderBook / TradeBook / Positions refresh automatically the moment a fill commits.
  • IIFL Capital market data expansion — Master contract optimization plus full historical data, quotes, depth, order, and margin API support (#1309, #1319). Brings IIFL Capital up to feature parity with the other Tier-1 brokers.
  • Fyers WebSocket overhaul — Six separate fixes: HSM subscribe batching, positional-index → brsymbol mapping, shared dispatcher registry across reconnects, per-symbol OI gated to FNO-only with a >50-symbol skip, multiquote OI ceiling raised to 100, and index ticks fanned out to both Quote and Depth subscribers.
  • Dhan rate-limit hardening — Minimum request interval bumped to 1.1s to stay under Dhan's "Order Received N in current second exceeds Limit 10" / 805 threshold.
  • Flow Editor stability — Condition nodes honor their UI fields (and respect both true/false and yes/no edge handles), {{var}} interpolation supports list indexing, the Expiry node has a Futures/Options dropdown, the Config Panel scrolls on small viewports, and the Execution Log scroll is fixed.
  • Broker symbol normalization — mstock instrumenttype normalized to CE/PE/FUT (Angel format), tradejini expiry stored as DD-MMM-YY (Zerodha format) — reduces broker-specific branching downstream (#1312).
  • Profile page UI fix — Broker API secret no longer overflows the container or leaks the secret length through visual width.
  • Sandbox stale-field guard — Drops price / trigger_price from order payloads based on pricetype, preventing leftover values from a previous order type from polluting the next placement.
  • Option chain exchange flip — Underlying and expiry are now cleared atomically when the user flips the exchange dropdown, eliminating a transient mismatched state.
  • CI security scan resilience — When bandit's SARIF formatter crashes (a known upstream bug), the security scan no longer fails the entire CI run.

Real-Time / WebSocket

Dhan

  • 1a80afb8 — fix(dhan/ws): batch subscribes to collapse per-symbol WS messages into grouped flushes (#1314)
  • 5aa1156f — fix(dhan): bump min request interval to 1.1s to avoid 805 rate limit

Fyers

  • 671b8548 — fix(fyers/ws): batch HSM subscribes to collapse N symbol-token POSTs into one
  • 5eb7baaa — fix(fyers/ws): join HSM<->Tradeboard mapping through brsymbol, not positional index
  • 55129e6c — fix(fyers/ws): use shared dispatcher registry so multi-flush reconnects don't drop ticks
  • 15c2c63b — fix(fyers/multiquotes): per-symbol OI for FNO only, skip when >50 symbols
  • 81cecdbd — fix(fyers/oi-tracker): raise multiquote OI ceiling to 100, narrow OI tracker to 47 strikes
  • b25bc931 — fix(fyers/ws): fan out index ticks to both Quote and Depth subscribers

Upstox

  • b9e44488 — fix(upstox/ws): batch subscribe queue, LTPC carry-forward, larger reconnect budget

The "price crosses trigger but pending sandbox order never fires" pattern reported across multiple brokers is fully resolved by these batching fixes. Ticks for freshly-placed orders now reliably reach the sandbox execution engine.

Sandbox

  • 3ff65a3f — feat(sandbox): emit analyzer_update on engine-internal fills, square-off, T+1
  • d3981b26 — fix(sandbox): drop stale price/trigger fields by pricetype

Brokers

IIFL Capital (#1309, #1319)

  • 73857264 — Master contract optimization plus full market data API: historical, quotes, depth.
  • 3ba5bf08 — Order API and margin API update.

mstock

  • df267180 — instrumenttype normalized to CE/PE/FUT to match Angel format.

tradejini

  • df267180 — Expiry stored in DD-MMM-YY format to match Zerodha.

Dhan / Fyers / Upstox — see Real-Time / WebSocket above.

Flow Editor

  • e16bb63c — fix(flow): condition nodes now honor their UI fields; respect both true/false and yes/no edge handles
  • 86f67310 — fix(flow): support list indexing in &#123;&#123;var&#125;&#125; interpolation; fix Execution Log scroll
  • b3d2ac11 — fix(flow): make Config Panel scroll on small viewports
  • 193365f2 — feat(flow): add Futures/Options dropdown to Expiry node
  • 5229c46e — docs(flow): document importer name field, fix node contracts, add 7 examples
  • 0f4f71f0 — docs(flow): add prompt-style JSON import reference for the Flow Editor

UI / UX

  • 92b5c877 — fix(ui): broker API secret no longer overflows / leaks length on Profile page
  • 975aafbc — fix(optionchain): clear underlying/expiry atomically on exchange flip

CI / Build

  • 3bdcd068 — fix(ci): security scan no longer fails when bandit SARIF formatter crashes

Documentation

  • d2baab90 — docs(audit): add per-broker WebSocket keepalive/reconnect audit
  • eb46e99c — docs(plans): expand GTT plan's Action Center coverage
  • 6f06329e — docs(claude): bump broker count from 24+ to 30+
  • 4a3b7861 — chore(release): bump platform version to 2.0.0.7 and document bump procedure — adds a Version Bumping section to CLAUDE.md clarifying the platform version (utils/version.py + pyproject.toml) is independent of the Tradeboard Python SDK pin (tradeboard==1.0.49 in requirements*.txt and pyproject.toml dependencies).

Contributors

  • @marketcalls (Rajandran) — release management, Dhan / Fyers / Upstox WebSocket subscribe-batching overhaul, sandbox event-driven UI updates, IIFL Capital market data expansion (#1309, #1319), Flow Editor stability fixes (condition nodes, list indexing, Expiry dropdown, scroll fixes), broker symbol normalization (mstock, tradejini #1312), Dhan rate-limit hardening, Profile UI fix, option chain exchange-flip atomicity, CI bandit SARIF resilience, and the per-broker WebSocket audit documentation.

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