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Designs clean, consistent, well-documented HTTP/RPC APIs.

Writes and updates clear technical documentation from code and context.

Validate data quality in market analysis documents and blog articles before publication. Use when checking for price scale inconsistencies (ETF vs futures), instrument notation errors, date/day-of-week mismatches, allocation total errors, and unit mismatches. Supports English and Japanese content. Advisory mode -- flags issues as warnings for human review, not as blockers.

Edit PDF text/typos/titles via nano-pdf CLI (NL prompts).

Extract text from PDFs/scans (pymupdf, marker-pdf).

Use when you need to generate UI designs, web/mobile mockups, presentations, dashboards, or documents from natural language. 31 composable skills across 129 design systems with image, video, and audio generation.

Write implementation plans: bite-sized tasks, paths, code.