Using Claude skills for financial file analysis — options flow + earnings reports

[tellmefrankie]

Relevant to this community: I extended the file-based planning approach to financial document analysis.

Use case: Process earnings transcripts, 10-Q filings, and options chain data with Claude skills — then produce structured output for decision support.

Skill I built:
Options flow analyzer that reads structured market data files and produces consistent output:

Ticker  Adj PCR  Baseline  Deviation  Signal
XLI     4.89     0.82      5.96x      EXTREME — institutional downside hedge
SPY     0.44     0.55      0.80x      BULLISH

Key architectural decision: Separate the data retrieval skill from the interpretation skill. The scanner produces a file. The interpreter reads that file and outputs a brief. Two skills, not one monolithic prompt.

This pattern scales — you can swap out the data source without changing the interpretation logic.

GitHub (free, open source): https://github.com/tellmefrankie/ai-investment-skills

Curious if others here have used similar file-passing patterns for analysis pipelines.