Proof Writer

Q: What is a Claude Code skill and how does the Proof Writer skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Proof Writer is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at https://claudskills.com/learn/what-is-skill-md/.

Category: Content · Sub-category: content-misc · Last updated: 2026-05-21

Writes rigorous mathematical proofs for ML/AI theory. Use when asked to prove a theorem, lemma, proposition, or corollary, fill in missing proof steps, formalize a proof sketch, 补全证明, 写证明, 证明某个命题, or determine whether a claimed proof can actually be completed under the stated assumptions.

About this skill (catalog notes)

Proof Writer includes at least one code block. The SKILL.md runs to about 1,164 words, in the catalog's typical mid-range.

Original author: gyf9712
Indexed lastmod: 2026-05-21
Catalog position: Content · content-misc
Indexed related skills: 10

How Proof Writer fits the catalog

Proof Writer sits in the Content category under the content-misc sub-topic in the ClaudSkills catalog. There are 10 related skills indexed alongside it; comparing a few before installing usually reveals which fits your workflow best.

These notes are auto-generated from features detected in the SKILL.md file and from this catalog's structure — they aren't part of the source repository.

From the source SKILL.md

Write a mathematically honest proof package, not a polished fake proof.

What this skill does

Proof Writer is a community-contributed Claude Code skill in the content-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/proof-writer/ and loads when your prompt matches the skill's trigger.

When to invoke it: Use when asked to prove a theorem, lemma, proposition, or corollary, fill in missing proof steps, formalize a proof sketch, 补全证明, 写证明, 证明某个命题, or determine whether a claimed proof can actually be completed under the stated assumptions.

Who uses this skill

The Proof Writer Claude Code skill is built for content creators, marketers, copywriters, SEO professionals, and editorial teams. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 116,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/proof-writer
curl -L https://claudskills.com/skills/proof-writer/SKILL.md \
  -o ~/.claude/skills/proof-writer/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/proof-writer/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/proof-writer/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\proof-writer\SKILL.md on Windows. See the full install guide for step-by-step instructions.

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Proof Writer Claude Code skill?

Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/proof-writer/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.

What does the Proof Writer skill do?

Is this skill free to install?

Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.

When should I use the Proof Writer skill?

Use Proof Writer when your Claude Code task falls under the Content category — specifically in the content misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Proof Writer" or describe the task and let Claude pick). Browse related skills at /category/content/.

What is a Claude Code skill and how does the Proof Writer skill fit in?

A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Proof Writer is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Content category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Source: https://github.com/gyf9712/stat-theory-skills/blob/HEAD/skills/proof-writer/SKILL.md
Author: gyf9712

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA

gyf9712. (2026). Proof Writer [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/proof-writer/

BibTeX

@misc{proof-writer-2026,
  author    = {gyf9712},
  title     = {Proof Writer [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/proof-writer/}
}

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Badge

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