Citation Verification Guide
Galaxy-Dawn/claude-scholar
Reference guidance for checking every citation in academic writing against canonical sources such as DOI, arXiv, CrossRef and Semantic Scholar, to catch fake or wrong references.
Adversarial fact-checking of the user's articles and essays (typically blog posts from akitaonrails-hugo, any markdown/text file), verifying every claim against online primary sources via cheap…
Install Fact Check
$ npx skills add akitaonrails/my-skills --skill fact-check -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install akitaonrails/my-skills fact-check --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/akitaonrails/my-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/fact-check .claude/skills/fact-check && 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 "fact-check" agent skill from https://github.com/akitaonrails/my-skills/tree/master/fact-check into .claude/skills/fact-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fact-check", 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/akitaonrails/my-skills/tree/master/fact-checkType 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 akitaonrails/my-skills --skill fact-check -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install akitaonrails/my-skills fact-check --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/akitaonrails/my-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/fact-check .agents/skills/fact-check && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "fact-check" agent skill from https://github.com/akitaonrails/my-skills/tree/master/fact-check into .agents/skills/fact-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fact-check", 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 akitaonrails/my-skills --skill fact-check -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install akitaonrails/my-skills fact-check --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/akitaonrails/my-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/fact-check .cursor/skills/fact-check && 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 "fact-check" agent skill from https://github.com/akitaonrails/my-skills/tree/master/fact-check into .cursor/skills/fact-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fact-check", 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/akitaonrails/my-skills.git --path fact-check--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 akitaonrails/my-skills --skill fact-check -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install akitaonrails/my-skills fact-check --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/akitaonrails/my-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/fact-check .gemini/skills/fact-check && 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 "fact-check" agent skill from https://github.com/akitaonrails/my-skills/tree/master/fact-check into .gemini/skills/fact-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fact-check", 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 akitaonrails/my-skills fact-checkInstalls 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 akitaonrails/my-skills --skill fact-check -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/akitaonrails/my-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/fact-check .github/skills/fact-check && 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 "fact-check" agent skill from https://github.com/akitaonrails/my-skills/tree/master/fact-check into .github/skills/fact-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fact-check", 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 akitaonrails/my-skills --skill fact-check -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install akitaonrails/my-skills fact-check --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/akitaonrails/my-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/fact-check .opencode/skills/fact-check && 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 "fact-check" agent skill from https://github.com/akitaonrails/my-skills/tree/master/fact-check into .opencode/skills/fact-check/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "fact-check", 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
fact-check- GitHub stars
- 220
- Token cost
- ~2.7k tokens
- SKILL.md length
- 1,203 words
- Files
- 6 (incl. scripts, references)
- Skills in repo
- 18
- Repo updated
- First seen
- Licence
- None found
At a glance
Adversarial fact-checking of the user's articles and essays (typically blog posts from akitaonrails-hugo, any markdown/text file), verifying every claim against online primary sources via cheap…
- Works in 7 steps: Setup → Claim extraction (you, no subagents) → Fan out verification (pass 1) → …
- The user says fact-check
- SKILL.md covers Non-negotiables, Fast path (two passes, always), Phase 0 — Setup and Phase 1 — Claim extraction…, plus 6 more sections
- Runs Python scripts from its folder; calls python3
What it does
Fact Check is an agent skill from akitaonrails/my-skills. Adversarial fact-checking of the user's articles and essays (typically blog posts from akitaonrails-hugo, any markdown/text file), verifying every claim against online primary sources via cheap headless checker subagents spawned on coding-agent CLIs (zcode, claude, codex, opencode, kimi, grok, agy). Use when the user says "fact-check", "check the facts/claims in this article", "tear apart / destroy / nitpick my post", "pre-publish review", "what can be used against me in this text", or hands over a draft asking…
Its SKILL.md is about 2.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including scripts and reference files (for example `config/models.json`, `references/checker-prompt.md` and `references/harness-setup.md`).
It sits in Research & Science, covering Fact-checking and source verification. It works with Kimi. The repository describes itself as: akitaonrails' personal skills (not tailored for general usage).
When your agent uses it
- The user says fact-check
- Check the facts/claims in this article
- Tear apart / destroy / nitpick my post
- Pre-publish review
Example prompts
- “fact-check”
- “check the facts/claims in this article”
- “tear apart / destroy / nitpick my post”
- “/fact-check”
Requirements
- Python 3
Workflow steps
7 steps, taken from the step headings in SKILL.md.
- Setup
- Claim extraction (you, no subagents)
- Fan out verification (pass 1)
- Pass 2 (fixed article, second harness)
- Hostile logic audit (you, no web)
- Pass 1 report + auto-fix
- Apply fixes
What it can do on your machine
Read from SKILL.md and the folder at commit 5763b9e. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
Ships 2 files in scripts/ (Python), which the agent can run.
Shell commands in SKILL.md call:
python3
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
Fact Check loads about 2.7k tokens when it runs, and up to ~5.7k if it reads all its reference files. Until then it costs about 164 tokens; SKILL.md has 1,203 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); the scripts in this folder are not scanned.
SKILL.md
Without a licence we can't republish the file, so here is its outline and opening line. It has 1,203 words (~2,708 tokens).
“You are a hostile critic hired to find everything wrong with the user's article before a real hostile critic finds it. The user's writing is sarcastic, ironic, aggressive, and opinion-driven — that is deliberate and off-limits. Your targets are facts…”
- name
- fact-check
Files
SKILL.md and 5 other files (scripts, references) in fact-check of akitaonrails/my-skills.
- SKILL.md
- config/models.json
- references/checker-prompt.md
- references/harness-setup.md
- scripts/dispatch_checker.py
- scripts/fanout.py
Open the folder on GitHubat commit 5763b9e
Compare with similar skills
Fact Check 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 |
|---|---|---|---|---|---|---|
| Fact Check this skillakitaonrails/my-skills | 220 | — | ~2.7k | Automated safety check: Pass | None | |
| Citation Verification GuideGalaxy-Dawn/claude-scholar | 5.7k | 2 repos | ~1.9k | Automated safety check: Pass | MIT | |
| Article Fact Checkerdigoal/blog | 8.6k | — | ~939 | Automated safety check: Pass | GPL-2.0 | |
| Grounded CitationsNousResearch/hermes-agent | 253k | — | ~3.1k | Automated safety check: Pass | MIT | |
| Coverage CheckSerhiiKorniienko/bullshit-detector | 154 | — | ~1.5k | Automated safety check: Pass | MIT | |
| Alego Docsingula-ai/alego | 109 | 1 repos | ~4.5k | Automated safety check: Pass | MIT |
Similar skills
Article Fact Checker
digoal/blog
三层审查模型,逐段逐句验证文章真伪、证据链与逻辑结构。Use when the user asks to fact-check, verify, audit, or evaluate the credibility of an article, essay, report, opinion piece, social-media post, or any written claim —…
Grounded Citations
NousResearch/hermes-agent
Attaches a numbered, URL-backed citation to every outside fact in an answer or document, rejecting quotes that aren't real.
Coverage Check
SerhiiKorniienko/bullshit-detector
Count how many independent origins are behind news coverage of a claim, instead of counting URLs.
Alego Doc
singula-ai/alego
Create, restructure, review, audit, or migrate Alego Markdown documentation, package READMEs, and the documentation website using audience-first hierarchy, kind-mapped YAML metadata, bilingual line…
Fact Check
elvisun/newsjack
Extract factual claims from PR copy, verify each claim independently, attach concrete citations, and warn when certainty is low.
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Related
Works with
Categories
Questions about Fact Check
What does Fact Check do?
Adversarial fact-checking of the user's articles and essays (typically blog posts from akitaonrails-hugo, any markdown/text file), verifying every claim against online primary sources via cheap…. Fact Check is an agent skill from akitaonrails/my-skills. Adversarial fact-checking of the user's articles and essays (typically blog posts from akitaonrails-hugo, any markdown/text file), verifying every claim against online primary sources via cheap headless checker subagents spawned on coding-agent CLIs (zcode, claude, codex, opencode, kimi, grok, agy).
When should I use Fact Check?
Fact Check fits situations like: the user says fact-check; check the facts/claims in this article; tear apart / destroy / nitpick my post; pre-publish review.
How do I install Fact Check in Claude Code?
Run `npx skills add akitaonrails/my-skills --skill fact-check -a claude-code`. Or copy the skill folder (fact-check in akitaonrails/my-skills) into .claude/skills/fact-check in your project. Claude Code loads it when a task matches its description.
How do I install Fact Check in Codex?
Run `npx skills add akitaonrails/my-skills --skill fact-check -a codex`. Or copy the skill folder (fact-check in akitaonrails/my-skills) into .agents/skills/fact-check in your project. Codex loads it when a task matches its description.
Can I use Fact Check 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 akitaonrails/my-skills --skill fact-check -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fact-check, .gemini/skills/fact-check, .github/skills/fact-check and .opencode/skills/fact-check in your project.
What does Fact Check need to run?
Going by SKILL.md and its folder, Fact Check needs Python for the scripts in its folder and the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Fact Check 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 Fact Check 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. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.
What licence does Fact Check use?
No licence was found for Fact Check or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Fact Check use?
About 2.7k tokens (SKILL.md is roughly 11k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3k tokens, read only when the agent opens those files.
What are the alternatives to Fact Check?
Skills that share tags, products or a category with Fact Check: Citation Verification Guide (Galaxy-Dawn/claude-scholar, 5.7k stars), Article Fact Checker (digoal/blog, 8.6k stars), Grounded Citations (NousResearch/hermes-agent, 253k stars) and Coverage Check (SerhiiKorniienko/bullshit-detector, 154 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Fact Check?
akitaonrails (a GitHub user) maintains it in akitaonrails/my-skills, which has 220 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on October 11, 2026.
Source: akitaonrails/my-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.