Second Brain Lint
NicholasSpisak/second-brain
Health-check the wiki for contradictions, orphan pages, stale claims, and missing cross-references.
Scan wiki/ for quality issues — contradictions, unsupported claims, and content gaps — and save a structured report to outputs/.
Install Second Brain Lint
$ npx skills add PieroSierra/SecondBrain --skill second-brain-lint -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-lint --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/PieroSierra/SecondBrain.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/second-brain-lint .claude/skills/second-brain-lint && 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 "second-brain-lint" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-lint into .claude/skills/second-brain-lint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-lint", 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/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-lintType 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 PieroSierra/SecondBrain --skill second-brain-lint -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-lint --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PieroSierra/SecondBrain.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/second-brain-lint .agents/skills/second-brain-lint && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "second-brain-lint" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-lint into .agents/skills/second-brain-lint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-lint", 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 PieroSierra/SecondBrain --skill second-brain-lint -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-lint --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PieroSierra/SecondBrain.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/second-brain-lint .cursor/skills/second-brain-lint && 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 "second-brain-lint" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-lint into .cursor/skills/second-brain-lint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-lint", 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/PieroSierra/SecondBrain.git --path .claude/skills/second-brain-lint--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 PieroSierra/SecondBrain --skill second-brain-lint -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-lint --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PieroSierra/SecondBrain.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/second-brain-lint .gemini/skills/second-brain-lint && 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 "second-brain-lint" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-lint into .gemini/skills/second-brain-lint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-lint", 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 PieroSierra/SecondBrain second-brain-lintInstalls 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 PieroSierra/SecondBrain --skill second-brain-lint -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/PieroSierra/SecondBrain.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/second-brain-lint .github/skills/second-brain-lint && 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 "second-brain-lint" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-lint into .github/skills/second-brain-lint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-lint", 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 PieroSierra/SecondBrain --skill second-brain-lint -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-lint --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/PieroSierra/SecondBrain.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/second-brain-lint .opencode/skills/second-brain-lint && 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 "second-brain-lint" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-lint into .opencode/skills/second-brain-lint/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-lint", 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
second-brain-lint- GitHub stars
- 153
- Token cost
- ~2.1k tokens
- SKILL.md length
- 881 words
- Files
- 1
- Skills in repo
- 15
- Repo updated
- First seen
- Licence
- None found
At a glance
Scan wiki/ for quality issues — contradictions, unsupported claims, and content gaps — and save a structured report to outputs/.
- Works in 8 steps: Check preconditions → Read all wiki articles → Check for contradictions → …
- Tasks that involve Second brain
- SKILL.md covers Invocation, Execution, Invariants and Error Conditions
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Second Brain Lint is an agent skill from PieroSierra/SecondBrain. Scan wiki/ for quality issues — contradictions, unsupported claims, and content gaps — and save a structured report to outputs/.
Its SKILL.md is about 2.1k 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 Knowledge Management, covering Second brain and Linting and formatting. The repository describes itself as: A personal knowledge base that lives in this folder. Drop content in, have it organized automatically, ask questions, and get sourced answers — either through Claude Code slash…
When your agent uses it
- Tasks that involve Second brain
- Tasks that involve Linting and formatting
Example prompts
- “/second-brain-lint”
Workflow steps
8 steps, taken from the step headings in SKILL.md.
- Check preconditions
- Read all wiki articles
- Check for contradictions
- Check for unsupported claims
- Identify content gaps
- Generate output filename
- Write the lint report
- Display and confirm
What it can do on your machine
Read from SKILL.md and the folder at commit cdcf96f. 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 (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
Second Brain Lint loads about 2.1k tokens when it runs. Until then it costs about 37 tokens; SKILL.md has 881 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 881 words (~2,066 tokens).
“Scan wiki/ for quality issues — contradictions, unsupported claims, and content gaps — and save a structured report to outputs/.”
- name
- second-brain-lint
- user-invocable
- true
Files
Just SKILL.md in .claude/skills/second-brain-lint of PieroSierra/SecondBrain.
Open the folder on GitHubat commit cdcf96f
Compare with similar skills
Second Brain Lint 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 |
|---|---|---|---|---|---|---|
| Second Brain Lint this skillPieroSierra/SecondBrain | 153 | — | ~2.1k | Automated safety check: Pass | None | |
| Second Brain LintNicholasSpisak/second-brain | 737 | — | ~1k | Automated safety check: Notes | None | |
| Second Brain Ingestundefined-ui/second-brain-os | 1k | — | ~873 | Automated safety check: Pass | MIT | |
| Second Brain Lintundefined-ui/second-brain-os | 1k | — | ~678 | Automated safety check: Pass | MIT | |
| Second Brain Reviewundefined-ui/second-brain-os | 1k | — | ~550 | Automated safety check: Pass | MIT | |
| Second Braincoreyhaines31/makerskills | 850 | — | ~3k | Automated safety check: Pass | MIT |
Similar skills
Second Brain Ingest
undefined-ui/second-brain-os
Turn raw source material in a second-brain vault into linked wiki pages: read the source, split it into concepts and entities, write or update pages, connect them to existing pages, and record the…
Second Brain Lint
undefined-ui/second-brain-os
Audit a second-brain vault for structural problems and repair them: broken wikilinks, orphan pages, empty stubs, frontmatter that violates the schema, near-duplicate pages, and stale index entries.
Second Brain Review
undefined-ui/second-brain-os
Produce a periodic review of a second-brain vault: what was added, which topics are growing, what contradicts what, which questions are still open, and what is worth reading next.
Second Brain
coreyhaines31/makerskills
When you want to capture into, compile, query, lint, or connect your personal Second Brain.
Mindbase
frankchu91/mindbase-llm-wiki
Maintain a persistent AI-tended research wiki. An agent skill from frankchu91/mindbase-llm-wiki.
More from PieroSierra/SecondBrain
All 15 skills in this repoSecond Brain Delint
PieroSierra/SecondBrain
Work through open findings in the latest lint report one at a time — propose a fix, apply on approval, skip on rejection.
Second Brain Describe Images
PieroSierra/SecondBrain
Describe one or more images pasted with a note and return the descriptions as JSON.
Second Brain Edit Wiki
PieroSierra/SecondBrain
Apply targeted edits to one or more wiki articles from a natural-language instruction, preserving structural invariants.
Second Brain Follow Up
PieroSierra/SecondBrain
Continue an existing conversation thread by re-reading the wiki and appending a follow-up answer to the thread file.
Second Brain Import Craft
PieroSierra/SecondBrain
Import a specific document from your configured Craft space into raw/craft/.
Second Brain Import File
PieroSierra/SecondBrain
Import a file of any supported type (PDF, image, .txt/.md) into the vault's raw/ directory, ready for ingestion.
Related
Categories
Questions about Second Brain Lint
What does Second Brain Lint do?
Scan wiki/ for quality issues — contradictions, unsupported claims, and content gaps — and save a structured report to outputs/. Second Brain Lint is an agent skill from PieroSierra/SecondBrain. Scan wiki/ for quality issues — contradictions, unsupported claims, and content gaps — and save a structured report to outputs/.
When should I use Second Brain Lint?
Second Brain Lint fits situations like: tasks that involve Second brain; tasks that involve Linting and formatting.
How do I install Second Brain Lint in Claude Code?
Run `npx skills add PieroSierra/SecondBrain --skill second-brain-lint -a claude-code`. Or copy the skill folder (.claude/skills/second-brain-lint in PieroSierra/SecondBrain) into .claude/skills/second-brain-lint in your project. Claude Code loads it when a task matches its description.
How do I install Second Brain Lint in Codex?
Run `npx skills add PieroSierra/SecondBrain --skill second-brain-lint -a codex`. Or copy the skill folder (.claude/skills/second-brain-lint in PieroSierra/SecondBrain) into .agents/skills/second-brain-lint in your project. Codex loads it when a task matches its description.
Can I use Second Brain Lint 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 PieroSierra/SecondBrain --skill second-brain-lint -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/second-brain-lint, .gemini/skills/second-brain-lint, .github/skills/second-brain-lint and .opencode/skills/second-brain-lint in your project.
What does Second Brain Lint need to run?
SKILL.md names no scripts, command-line tools or credentials: Second Brain Lint is instructions for the agent only.
Does Second Brain Lint 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 Second Brain Lint 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 Second Brain Lint use?
No licence was found for Second Brain Lint or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Second Brain Lint use?
About 2.1k tokens (SKILL.md is roughly 8.3k 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 Second Brain Lint?
Skills that share tags, products or a category with Second Brain Lint: Second Brain Lint (NicholasSpisak/second-brain, 737 stars), Second Brain Ingest (undefined-ui/second-brain-os, 1k stars), Second Brain Lint (undefined-ui/second-brain-os, 1k stars) and Second Brain Review (undefined-ui/second-brain-os, 1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Second Brain Lint?
PieroSierra (a GitHub user) maintains it in PieroSierra/SecondBrain, which has 153 GitHub stars. The repository holds 15 skills in this directory. The repository was last updated on October 5, 2026.
Source: PieroSierra/SecondBrain on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.