Second 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.
Health-check the wiki for contradictions, orphan pages, stale claims, and missing cross-references.
Install Second Brain Lint
$ npx skills add NicholasSpisak/second-brain --skill second-brain-lint -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install NicholasSpisak/second-brain 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/NicholasSpisak/second-brain.git skills-src && mkdir -p .claude/skills && cp -r skills-src/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/NicholasSpisak/second-brain/tree/main/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/NicholasSpisak/second-brain/tree/main/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 NicholasSpisak/second-brain --skill second-brain-lint -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install NicholasSpisak/second-brain second-brain-lint --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NicholasSpisak/second-brain.git skills-src && mkdir -p .agents/skills && cp -r skills-src/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/NicholasSpisak/second-brain/tree/main/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 NicholasSpisak/second-brain --skill second-brain-lint -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install NicholasSpisak/second-brain second-brain-lint --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NicholasSpisak/second-brain.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/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/NicholasSpisak/second-brain/tree/main/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/NicholasSpisak/second-brain.git --path 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 NicholasSpisak/second-brain --skill second-brain-lint -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install NicholasSpisak/second-brain 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/NicholasSpisak/second-brain.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/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/NicholasSpisak/second-brain/tree/main/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 NicholasSpisak/second-brain 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 NicholasSpisak/second-brain --skill second-brain-lint -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/NicholasSpisak/second-brain.git skills-src && mkdir -p .github/skills && cp -r skills-src/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/NicholasSpisak/second-brain/tree/main/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 NicholasSpisak/second-brain --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 NicholasSpisak/second-brain second-brain-lint --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/NicholasSpisak/second-brain.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/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/NicholasSpisak/second-brain/tree/main/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
- 737
- Token cost
- ~1k tokens
- SKILL.md length
- 520 words
- Files
- 1
- Skills in repo
- 4
- Repo updated
- First seen
- Licence
- None found
At a glance
Health-check the wiki for contradictions, orphan pages, stale claims, and missing cross-references.
- Works in 8 steps: Broken wikilinks → Orphan pages → Contradictions → …
- The user says audit
- SKILL.md covers Audit Steps, Report Format, After the Report and Log the lint pass, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Second Brain Lint is an agent skill from NicholasSpisak/second-brain. Health-check the wiki for contradictions, orphan pages, stale claims, and missing cross-references. Use when the user says "audit", "health check", "lint", "find problems", or wants to improve wiki quality.
Its SKILL.md is about 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: LLM-maintained personal knowledge base for Obsidian. Based on Andrej Karpathy's LLM Wiki pattern.
When your agent uses it
- The user says audit
- Wants to improve wiki quality
Example prompts
- “health check”
- “find problems”
- “/second-brain-lint”
Requirements
- Pre-approved tools (allowed-tools): Bash, Read, Write, Edit, Glob, Grep
Workflow steps
8 steps, taken from the step headings in SKILL.md.
- Broken wikilinks
- Orphan pages
- Contradictions
- Stale claims
- Missing pages
- Missing cross-references
- Index consistency
- Data gaps
What it can do on your machine
Read from SKILL.md and the folder at commit 3e429c7. 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:
BashReadWriteEditGlobGrep
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 bash).
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 1k tokens when it runs. Until then it costs about 56 tokens; SKILL.md has 520 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: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Bash, Read, Write, Edit, Glob, Grep
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 520 words (~1,002 tokens).
“Health-check the wiki and report issues with actionable fixes.”
- name
- second-brain-lint
- allowed-tools
- Bash, Read, Write, Edit, Glob, Grep
Files
Just SKILL.md in skills/second-brain-lint of NicholasSpisak/second-brain.
Open the folder on GitHubat commit 3e429c7
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 skillNicholasSpisak/second-brain | 737 | — | ~1k | Automated safety check: Notes | None | |
| Second Brain DelintPieroSierra/SecondBrain | 153 | — | ~1k | Automated safety check: Pass | 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 | 851 | — | ~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.
Second Brain Lint
PieroSierra/SecondBrain
Scan wiki/ for quality issues — contradictions, unsupported claims, and content gaps — and save a structured report to outputs/.
More from NicholasSpisak/second-brain
Second Brain
NicholasSpisak/second-brain
Set up a new Obsidian knowledge base with the LLM Wiki pattern.
Second Brain Query
NicholasSpisak/second-brain
Answer questions against the knowledge base wiki. An agent skill from NicholasSpisak/second-brain.
Second Brain Ingest
NicholasSpisak/second-brain
Process raw source documents into wiki pages. An agent skill from NicholasSpisak/second-brain.
Related
Categories
Questions about Second Brain Lint
What does Second Brain Lint do?
Health-check the wiki for contradictions, orphan pages, stale claims, and missing cross-references. Second Brain Lint is an agent skill from NicholasSpisak/second-brain. Health-check the wiki for contradictions, orphan pages, stale claims, and missing cross-references.
When should I use Second Brain Lint?
Second Brain Lint fits situations like: the user says audit; wants to improve wiki quality.
How do I install Second Brain Lint in Claude Code?
Run `npx skills add NicholasSpisak/second-brain --skill second-brain-lint -a claude-code`. Or copy the skill folder (skills/second-brain-lint in NicholasSpisak/second-brain) 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 NicholasSpisak/second-brain --skill second-brain-lint -a codex`. Or copy the skill folder (skills/second-brain-lint in NicholasSpisak/second-brain) 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 NicholasSpisak/second-brain --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. Its frontmatter pre-approves these tools: Bash, Read, Write, Edit, Glob, Grep.
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 notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. 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 1k tokens (SKILL.md is roughly 4k 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 Delint (PieroSierra/SecondBrain, 153 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?
NicholasSpisak (a GitHub user) maintains it in NicholasSpisak/second-brain, which has 737 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on April 7, 2026.
Source: NicholasSpisak/second-brain on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.