To Spec

To Spec is an AI Engineering skill for Claude Code, published by stevesolun in ctx.

578 stars71 forkson stevesolun/ctxAdded 2026/08/25+1% in starsRepository updated 2026/08/24

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Install in seconds

Install To Spec

Copy To Spec into your Claude Code skills folder. Run the command in your terminal, or review the source on GitHub before installing.

terminal

npx degit https://github.com/stevesolun/ctx/tree/main/.agents/skills/to-spec ~/.claude/skills/to-spec

Requires Node.js. Downloads this skill only — not the rest of the repository — into your Claude Code skills folder.

Without Node.js

git clone https://github.com/stevesolun/ctx.git

Clones the whole repository, then copy the skill’s own directory into your skills folder yourself.

In this catalog

Source file: .agents/skills/to-spec/SKILL.md in stevesolun/ctx
Installs to: ~/.claude/skills/to-spec
Collection: One of 25 skills cataloged from this repository
Category: AI Engineering — 2451 skills

What To Spec does

To Spec synthesizes an implementation-ready spec from a conversation and relevant repository context. Use it when work needs to be captured as a PRD or scoped specification with behavior, constraints, and acceptance criteria.

To Spec is cataloged under AI Engineering on DirSkills. To Spec comes from a repository tagged agents, ai-agents, anthropic, automation and claude.

Documentation

README

Excerpt

Create a spec

Capture the decisions already made. Resolve only gaps that would materially change the intended behavior, scope, or feasibility; do not reopen settled questions for the sake of completing a template.

Inspect the relevant implementation, tests, domain language, and architectural decisions when they improve fidelity. Keep facts observed in the repository distinct from decisions inferred from the conversation.

Describe:

the user-visible problem and desired outcome;
behavior, edge cases, and acceptance criteria;
constraints and decisions that implementation must preserve;
relevant interfaces or test seams when they are already known; and
explicit exclusions and unresolved questions.

This is the opening of the README. Read the full README on GitHub.

Frequently asked about To Spec

What else does stevesolun publish alongside To Spec?
To Spec is one of 25 skills that DirSkills catalogs from stevesolun/ctx, the repository it ships in. Its siblings there include Ask Matt, Code Review and Codebase Design. Each one is a separate skill with its own page in this directory, installs the same way To Spec does, and is maintained by stevesolun in that same repository. The rest of the collection is listed on the stevesolun/ctx page.
How does To Spec compare to other AI Engineering skills?
To Spec ranks #1993 by stars among the 2451 AI Engineering skills in this catalog. The most-starred ones next to it are Architecture Decision Records, AI-First Engineering and Agentic OS. DirSkills ranks by the star count of the repository each skill ships in, so that order reflects how popular those repositories are rather than any review of To Spec against them. Open each page to compare what they document and how they install.