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MesoLive v2.0 — TastyTrade Integration and Paper Trading Upgrades

· 3 min read
MesoLive v2.0 — TastyTrade

We’re excited to announce MesoLive v2.0, headlined by full TastyTrade brokerage support, enhanced Paper Trading capabilities, and stability/performance improvements across the stack.

Double Diagonal in MesoLive from a TastyTrade account

New Brokerage: TastyTrade​

MesoLive now integrates with TastyTrade for live trading. TastyTrade being the second, fully supported brokerage alongside Interactive Brokers.

Highlights:

  • TastyTrade API for Position Entry/Adjustments/Exit and Tracking
  • dxLink market data + improved strike selection
  • Dual-data connectivity with IBKR / TWS for increased reliability and redundancy
Dual Data Connection

MesoLive Agent for macOS​

The MesoLive Agent is now available for macOS via the Mac App Store.

  • Recommended for users who prefer a native experience on macOS
  • Works with both Interactive Brokers and TastyTrade
  • Docker remains available for macOS, Linux, and Windows users
MesoLive Agent in Mac App Store

Paper Trading: More power, better parity​

We’ve added Schwab as the third (2.5th) supported broker for Paper Trading accounts and improved parity with live trading:

  • Use your IBKR or TastyTrade connection for live market data in Paper account
  • Build, adjust and exit multi-leg positions smoothly with ToS Order-Strings
  • Leg groups to support complex trade structures
  • Use our generic Paper-based workflow to trade with Other Brokers manually
Paper Trading with Leg Groups

Under the Hood​

A selection of changes users benefit from in daily use:

  • API and automation: We're in the testing phase of MesoLive API to enable full trade automation for FundPro customers.
  • Reliability: race‑condition fixes during simultaneous builds, reconnect improvements, Strike Selection improvements for OTM options
  • Platform: .NET 10 upgrade; order entry UI refinements; position history/leg assigner fixes

Coming Soon​

  • Rhino trade: A Classic Strategy by Brian Larson and Bruno Voisin
    similar to Amy Meissner's A14, Time Flies Spread, BWB-CD / BWB-Cal from Trading Dominion
  • MesoSim 3.0:
    • Option Valuation Model (Black‑Scholes‑Merton) with a solver, enabling:
      • Break‑even calculations for calendar spreads
      • Min / Max values and locations of Greeks for complex positions
      • and more
    • Timing functions to explore Seasonal Patterns
    • Strategy Definition cleanup and enhancements
  • MesoLive API
    • Enable FundPro customers to build fully automated trading systems
Pricing Update

Starting 8 December, pricing for both MesoSim and MesoLive will increase. Existing subscribers are not affected.

Current Pricing: https://deltaray.io/pricing