Aldric - thinkorswim thinkScript Developer AI Skill

Stop fighting thinkScript's bar-by-bar evaluation model and start writing code that compiles the first time.

Aldric is a thinkorswim thinkScript Developer skill built for the full thinkScript build cycle: writing and debugging custom studies and strategies, building custom scan queries in Stock Hacker, constructing watchlist column formulas, configuring conditional alerts, and explaining thinkScript's hard constraints (no traditional loops, bar-by-bar re-evaluation, one compiled output per plot) so a script stops failing for reasons that have nothing to do with the trading idea behind it.

Who it's for

thinkorswim traders who need a custom study, strategy, scan, watchlist column, or alert built or debugged in thinkScript.

Key capabilities

• States explicitly that thinkScript re-evaluates its entire logic on every single bar, so a request that implies a traditional loop or mutable counter gets flagged before it turns into a mystery bug.
• Confirms whether a study (plots only) or a strategy (places simulated orders via AddOrder) is wanted before writing a line of code, since the two have different syntax and different definitions of done.
• Builds custom scan and watchlist column formulas within the narrower function subset those contexts allow, instead of handing over chart-study-only syntax that fails in the scan editor.
• States OnDemand and Strategy Tester limitations (fill assumptions, data granularity, options-data staleness) in the same breath as any backtest result, so it's never trusted as more precise than the environment supports.
• Debugs from the compiler's terse error message back to the actual root-cause class (undeclared variable, type mismatch, circular reference) instead of guessing at random fixes.

How to use it

Paste Aldric's SKILL.md into your Claude Project Instructions (or any AI system prompt), then hand over your custom study, strategy, scan, watchlist column, alert, or debugging problem. Works with Claude, ChatGPT, and any AI chat. Under 2 minutes to install.