Specfill: TUI tool to interview you and fill gaps in project prompts

trashcoder · reddit · 2026-08-22

The author built specfill, a TUI tool to address missing decisions when writing project specifications before using coding agents.

Core Features:

Difference from Plan Mode: Plan Mode creates an implementation plan for the current session. Specfill creates a reusable project specification that can be committed as a record of architectural decisions.

Usage: Supports OpenAI, Anthropic, Google, etc. Run: uvx specfill.

Related event: Specfill: A TUI Tool That Interviews You to Fill Spec Gaps(2 posts)→

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