Fact Checking
bradygaster/squad
Review and validate claims using counter-hypothesis testing.
Activate when working on the Agentic SDLC Handbook. An agent skill from danielmeppiel/agentic-sdlc-handbook.
Install Handbook Panel
$ npx skills add danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install danielmeppiel/agentic-sdlc-handbook handbook-panel --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/danielmeppiel/agentic-sdlc-handbook.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.github/skills/handbook-panel .claude/skills/handbook-panel && 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 "handbook-panel" agent skill from https://github.com/danielmeppiel/agentic-sdlc-handbook/tree/main/.github/skills/handbook-panel into .claude/skills/handbook-panel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-panel", 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/danielmeppiel/agentic-sdlc-handbook/tree/main/.github/skills/handbook-panelType 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 danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install danielmeppiel/agentic-sdlc-handbook handbook-panel --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/danielmeppiel/agentic-sdlc-handbook.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.github/skills/handbook-panel .agents/skills/handbook-panel && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "handbook-panel" agent skill from https://github.com/danielmeppiel/agentic-sdlc-handbook/tree/main/.github/skills/handbook-panel into .agents/skills/handbook-panel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-panel", 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 danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install danielmeppiel/agentic-sdlc-handbook handbook-panel --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/danielmeppiel/agentic-sdlc-handbook.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.github/skills/handbook-panel .cursor/skills/handbook-panel && 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 "handbook-panel" agent skill from https://github.com/danielmeppiel/agentic-sdlc-handbook/tree/main/.github/skills/handbook-panel into .cursor/skills/handbook-panel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-panel", 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/danielmeppiel/agentic-sdlc-handbook.git --path .github/skills/handbook-panel--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 danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install danielmeppiel/agentic-sdlc-handbook handbook-panel --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/danielmeppiel/agentic-sdlc-handbook.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.github/skills/handbook-panel .gemini/skills/handbook-panel && 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 "handbook-panel" agent skill from https://github.com/danielmeppiel/agentic-sdlc-handbook/tree/main/.github/skills/handbook-panel into .gemini/skills/handbook-panel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-panel", 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 danielmeppiel/agentic-sdlc-handbook handbook-panelInstalls 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 danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/danielmeppiel/agentic-sdlc-handbook.git skills-src && mkdir -p .github/skills && cp -r skills-src/.github/skills/handbook-panel .github/skills/handbook-panel && 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 "handbook-panel" agent skill from https://github.com/danielmeppiel/agentic-sdlc-handbook/tree/main/.github/skills/handbook-panel into .github/skills/handbook-panel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-panel", 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 danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install danielmeppiel/agentic-sdlc-handbook handbook-panel --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/danielmeppiel/agentic-sdlc-handbook.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.github/skills/handbook-panel .opencode/skills/handbook-panel && 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 "handbook-panel" agent skill from https://github.com/danielmeppiel/agentic-sdlc-handbook/tree/main/.github/skills/handbook-panel into .opencode/skills/handbook-panel/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "handbook-panel", 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
handbook-panel- GitHub stars
- 158
- Token cost
- ~1.2k tokens
- SKILL.md length
- 496 words
- Files
- 1
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Activate when working on the Agentic SDLC Handbook. An agent skill from danielmeppiel/agentic-sdlc-handbook.
- Works in 3 steps: Each specialist reviews their assigned… → Chief Editor synthesizes findings into… → Surface to author for approval
- Any handbook chapter creation
- SKILL.md covers Agent roster, Panel workflow, Handbook structure and Quality gates
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Handbook Panel is an agent skill from danielmeppiel/agentic-sdlc-handbook. Activate when working on the Agentic SDLC Handbook. This skill orchestrates an expert panel of 11 agents for iterative review, drafting, visual design, fact-checking, publishing strategy, and quality assurance of handbook content. Use it for any handbook chapter creation, review, illustration, publishing, or structural decision.
Its SKILL.md is about 1.2k 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, covering Fact-checking and source verification, UI design and QA and bug reports. The repository describes itself as: The Agentic SDLC Handbook — dual-audience guide for C-suite and practitioners.
When your agent uses it
- Any handbook chapter creation
- Structural decision
Example prompts
- “/handbook-panel”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Each specialist reviews their assigned source asset
- Chief Editor synthesizes findings into content map + gap analysis
- Surface to author for approval
What it can do on your machine
Read from SKILL.md and the folder at commit de33de2. 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
No scripts in the folder and no shell commands in SKILL.md.
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
Handbook Panel loads about 1.2k tokens when it runs. Until then it costs about 86 tokens; SKILL.md has 496 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 496 words (~1,198 tokens).
“Check the Parts and Chapters of the book in the source code to ground yourself on current TOC and chapter structure.”
- name
- handbook-panel
Files
Just SKILL.md in .github/skills/handbook-panel of danielmeppiel/agentic-sdlc-handbook.
Open the folder on GitHubat commit de33de2
Compare with similar skills
Handbook Panel 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 |
|---|---|---|---|---|---|---|
| Handbook Panel this skilldanielmeppiel/agentic-sdlc-handbook | 158 | — | ~1.2k | Automated safety check: Pass | Custom licence | |
| Fact Checkingbradygaster/squad | 3.3k | — | ~503 | Automated safety check: Pass | MIT | |
| Sciatlas Quick Paper Searchzjunlp/SciAtlas | 160 | — | ~1.3k | Automated safety check: Pass | MIT | |
| Spec Dogfoodleo-kuang-ai/spec-first | 107 | — | ~6.1k | Automated safety check: Notes | MIT | |
| Perplexity Web Searchdavila7/claude-code-templates | 33k | 11 repos | ~3.5k | Automated safety check: Notes | MIT | |
| Citation Verification GuideGalaxy-Dawn/claude-scholar | 5.7k | 2 repos | ~1.9k | Automated safety check: Pass | MIT |
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Runs web-grounded searches through Perplexity's Sonar models over OpenRouter for current events, recent literature and cited facts beyond the model's training cutoff.
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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.
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Related
Categories
Questions about Handbook Panel
What does Handbook Panel do?
Activate when working on the Agentic SDLC Handbook. An agent skill from danielmeppiel/agentic-sdlc-handbook. Handbook Panel is an agent skill from danielmeppiel/agentic-sdlc-handbook. Activate when working on the Agentic SDLC Handbook.
When should I use Handbook Panel?
Handbook Panel fits situations like: any handbook chapter creation; structural decision.
How do I install Handbook Panel in Claude Code?
Run `npx skills add danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a claude-code`. Or copy the skill folder (.github/skills/handbook-panel in danielmeppiel/agentic-sdlc-handbook) into .claude/skills/handbook-panel in your project. Claude Code loads it when a task matches its description.
How do I install Handbook Panel in Codex?
Run `npx skills add danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a codex`. Or copy the skill folder (.github/skills/handbook-panel in danielmeppiel/agentic-sdlc-handbook) into .agents/skills/handbook-panel in your project. Codex loads it when a task matches its description.
Can I use Handbook Panel 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 danielmeppiel/agentic-sdlc-handbook --skill handbook-panel -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/handbook-panel, .gemini/skills/handbook-panel, .github/skills/handbook-panel and .opencode/skills/handbook-panel in your project.
What does Handbook Panel need to run?
SKILL.md names no scripts, command-line tools or credentials: Handbook Panel is instructions for the agent only.
Does Handbook Panel 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 Handbook Panel 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 Handbook Panel use?
Handbook Panel has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Handbook Panel use?
About 1.2k tokens (SKILL.md is roughly 4.8k 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 Handbook Panel?
Skills that share tags, products or a category with Handbook Panel: Fact Checking (bradygaster/squad, 3.3k stars), Sciatlas Quick Paper Search (zjunlp/SciAtlas, 160 stars), Spec Dogfood (leo-kuang-ai/spec-first, 107 stars) and Perplexity Web Search (davila7/claude-code-templates, 33k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Handbook Panel?
danielmeppiel (a GitHub user) maintains it in danielmeppiel/agentic-sdlc-handbook, which has 158 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on June 16, 2026.
Source: danielmeppiel/agentic-sdlc-handbook on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.