Hypothesis Generation
spacering-net/codeg
Structured hypothesis formulation from observations. An agent skill from spacering-net/codeg.
Writes rigorous mathematical proofs for ML/AI theory. An agent skill from AI4Scientist/nano-scientist.
Install Proof Writer
$ npx skills add AI4Scientist/nano-scientist --skill proof-writer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install AI4Scientist/nano-scientist proof-writer --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/AI4Scientist/nano-scientist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/proof-writer .claude/skills/proof-writer && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "proof-writer" agent skill from https://github.com/AI4Scientist/nano-scientist/tree/main/skills/proof-writer into .claude/skills/proof-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "proof-writer", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/AI4Scientist/nano-scientist/tree/main/skills/proof-writerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add AI4Scientist/nano-scientist --skill proof-writer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install AI4Scientist/nano-scientist proof-writer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AI4Scientist/nano-scientist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/proof-writer .agents/skills/proof-writer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "proof-writer" agent skill from https://github.com/AI4Scientist/nano-scientist/tree/main/skills/proof-writer into .agents/skills/proof-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "proof-writer", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add AI4Scientist/nano-scientist --skill proof-writer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install AI4Scientist/nano-scientist proof-writer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AI4Scientist/nano-scientist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/proof-writer .cursor/skills/proof-writer && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "proof-writer" agent skill from https://github.com/AI4Scientist/nano-scientist/tree/main/skills/proof-writer into .cursor/skills/proof-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "proof-writer", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/AI4Scientist/nano-scientist.git --path skills/proof-writer--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add AI4Scientist/nano-scientist --skill proof-writer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install AI4Scientist/nano-scientist proof-writer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AI4Scientist/nano-scientist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/proof-writer .gemini/skills/proof-writer && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "proof-writer" agent skill from https://github.com/AI4Scientist/nano-scientist/tree/main/skills/proof-writer into .gemini/skills/proof-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "proof-writer", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install AI4Scientist/nano-scientist proof-writerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add AI4Scientist/nano-scientist --skill proof-writer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/AI4Scientist/nano-scientist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/proof-writer .github/skills/proof-writer && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "proof-writer" agent skill from https://github.com/AI4Scientist/nano-scientist/tree/main/skills/proof-writer into .github/skills/proof-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "proof-writer", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add AI4Scientist/nano-scientist --skill proof-writer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install AI4Scientist/nano-scientist proof-writer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/AI4Scientist/nano-scientist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/proof-writer .opencode/skills/proof-writer && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "proof-writer" agent skill from https://github.com/AI4Scientist/nano-scientist/tree/main/skills/proof-writer into .opencode/skills/proof-writer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "proof-writer", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
proof-writer- GitHub stars
- 128
- Used in
- 5 other repos
- Token cost
- ~1.9k tokens
- SKILL.md length
- 959 words
- Files
- 1
- Skills in repo
- 74
- Repo updated
- First seen
- Licence
- None found
At a glance
Writes rigorous mathematical proofs for ML/AI theory. An agent skill from AI4Scientist/nano-scientist.
- Works in 6 steps: Gather Proof Context → Normalize the Claim → Feasibility Triage → …
- Asked to prove a theorem
- SKILL.md covers Constants, Context: $ARGUMENTS, Goal and Inputs, plus 5 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Proof Writer is an agent skill from AI4Scientist/nano-scientist. 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.
Its SKILL.md is about 1.9k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Research & Science. The repository describes itself as: An autonomous research agent that turns a topic into a peer-reviewed technical report.
When your agent uses it
- Asked to prove a theorem
- Fill in missing proof steps
- Formalize a proof sketch
- Determine whether a claimed proof can actually be completed under the stated assumptions
Example prompts
- “Use the proof-writer skill to write rigorous mathematical proofs for ML/AI theory. An agent skill from AI4Scientist/nano-scientist”
- “/proof-writer”
Requirements
- Pre-approved tools (allowed-tools): Read, Write, Edit, Grep, Glob
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- Gather Proof Context
- Normalize the Claim
- Feasibility Triage
- Build a Dependency Map
- Write the Proof Document
- Final Verification
What it can do on your machine
Read from SKILL.md and the folder at commit 7132192. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadWriteEditGrepGlob
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are markdown).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Proof Writer loads about 1.9k tokens when it runs. Until then it costs about 76 tokens; SKILL.md has 959 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 959 words (~1,892 tokens).
“Write a mathematically honest proof package, not a polished fake proof.”
- name
- proof-writer
- allowed-tools
- Read, Write, Edit, Grep, Glob
- argument-hint
- theorem-statement-and-assumptions
Files
Just SKILL.md in skills/proof-writer of AI4Scientist/nano-scientist.
Open the folder on GitHubat commit 7132192
Used in 5 other repositories
We found 10 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 5 other GitHub owners. This page covers the copy in AI4Scientist/nano-scientist, which our catalogue first saw on October 7, 2026.
- OpenLAIR/dr-clawskills/aris-proof-writer
- wanshuiyin/Auto-claude-code-research-in-sleepskills/proof-writerskills/skills-codex/proof-writer
- brycewang-stanford/Auto-Empirical-Research-Skillsskills/42-wanshuiyin-ARIS/skills/proof-writerskills/42-wanshuiyin-ARIS/skills/skills-codex/proof-writer
- franklee16/academic-research-skillsresearch-workflow/codex-paper-skills-main/paper_skills/proof-writer
- Tai609/NebulaMatruntime/skills-bundle/aris-proof-writerruntime/aris/skills-nebulamat/aris-proof-writer+1 more
Compare with similar skills
Proof Writer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Proof Writer this skillAI4Scientist/nano-scientist | 128 | 5 repos | ~1.9k | Automated safety check: Pass | None | |
| Hypothesis Generationspacering-net/codeg | 3.9k | 14 repos | ~3.6k | Automated safety check: Notes | MIT | |
| GitHub Deep Researchbytedance/deer-flow | 84k | 4 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Nature Paper CardYuan1z0825/nature-skills | 47k | 2 repos | ~2.1k | Automated safety check: Pass | Apache-2.0 | |
| Content Research Writerweapp-tailwindcss/weapp-tailwindcss | 1.9k | 25 repos | ~3.5k | Automated safety check: Pass | MIT | |
| Peer Reviewspacering-net/codeg | 3.9k | 17 repos | ~5.9k | Automated safety check: Notes | MIT |
Similar skills
GitHub Deep Research
bytedance/deer-flow
Researches a GitHub repository over four rounds using the GitHub API and web search, then writes a structured markdown report with timeline, metrics and Mermaid diagrams.
Nature Paper Card
Yuan1z0825/nature-skills
Builds a structured deep-reading card for one scientific paper, covering methods, how experiments support claims, limitations and research ideas, with a script to prepare the source.
Content Research Writer
weapp-tailwindcss/weapp-tailwindcss
Assists in writing high-quality content by conducting research, adding citations, improving hooks, iterating on outlines, and providing real-time feedback on each section.
Peer Review
spacering-net/codeg
Structured manuscript/grant review with checklist-based evaluation.
Last30days
mvanhorn/last30days-skill
Research what people actually say about any topic in the last 30 days.
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Related
Categories
Questions about Proof Writer
What does Proof Writer do?
Writes rigorous mathematical proofs for ML/AI theory. An agent skill from AI4Scientist/nano-scientist. Proof Writer is an agent skill from AI4Scientist/nano-scientist. Writes rigorous mathematical proofs for ML/AI theory.
When should I use Proof Writer?
Proof Writer fits situations like: asked to prove a theorem; fill in missing proof steps; formalize a proof sketch; determine whether a claimed proof can actually be completed under the stated assumptions.
How do I install Proof Writer in Claude Code?
Run `npx skills add AI4Scientist/nano-scientist --skill proof-writer -a claude-code`. Or copy the skill folder (skills/proof-writer in AI4Scientist/nano-scientist) into .claude/skills/proof-writer in your project. Claude Code loads it when a task matches its description.
How do I install Proof Writer in Codex?
Run `npx skills add AI4Scientist/nano-scientist --skill proof-writer -a codex`. Or copy the skill folder (skills/proof-writer in AI4Scientist/nano-scientist) into .agents/skills/proof-writer in your project. Codex loads it when a task matches its description.
Can I use Proof Writer in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add AI4Scientist/nano-scientist --skill proof-writer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/proof-writer, .gemini/skills/proof-writer, .github/skills/proof-writer and .opencode/skills/proof-writer in your project.
What does Proof Writer need to run?
SKILL.md names no scripts, command-line tools or credentials: Proof Writer is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Write, Edit, Grep, Glob.
Does Proof Writer access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Proof Writer safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Proof Writer use?
No licence was found for Proof Writer or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Proof Writer use?
About 1.9k tokens (SKILL.md is roughly 7.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Proof Writer?
Skills that share tags, products or a category with Proof Writer: Hypothesis Generation (spacering-net/codeg, 3.9k stars), GitHub Deep Research (bytedance/deer-flow, 84k stars), Nature Paper Card (Yuan1z0825/nature-skills, 47k stars) and Content Research Writer (weapp-tailwindcss/weapp-tailwindcss, 1.9k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Proof Writer?
AI4Scientist (a GitHub organization) maintains it in AI4Scientist/nano-scientist, which has 128 GitHub stars. The repository holds 74 skills in this directory. The repository was last updated on June 3, 2026.
Source: AI4Scientist/nano-scientist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.