Obsidian Canvas Boards
AgriciDaniel/claude-obsidian
Creates, inspects and updates Obsidian JSON Canvas boards in a vault, with text, file, link, group and edge nodes, using safe recoverable edits.
Read new or changed files in raw/, synthesise content into wiki/ topic articles, rebuild INDEX.md, and update the ingest manifest.
Install Second Brain Ingest
$ npx skills add PieroSierra/SecondBrain --skill second-brain-ingest -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-ingest --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-ingest .claude/skills/second-brain-ingest && 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-ingest" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-ingest into .claude/skills/second-brain-ingest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-ingest", 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-ingestType 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-ingest -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-ingest --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-ingest .agents/skills/second-brain-ingest && 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-ingest" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-ingest into .agents/skills/second-brain-ingest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-ingest", 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-ingest -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-ingest --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-ingest .cursor/skills/second-brain-ingest && 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-ingest" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-ingest into .cursor/skills/second-brain-ingest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-ingest", 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-ingest--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-ingest -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install PieroSierra/SecondBrain second-brain-ingest --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-ingest .gemini/skills/second-brain-ingest && 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-ingest" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-ingest into .gemini/skills/second-brain-ingest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-ingest", 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-ingestInstalls 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-ingest -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-ingest .github/skills/second-brain-ingest && 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-ingest" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-ingest into .github/skills/second-brain-ingest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-ingest", 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-ingest -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-ingest --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-ingest .opencode/skills/second-brain-ingest && 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-ingest" agent skill from https://github.com/PieroSierra/SecondBrain/tree/main/.claude/skills/second-brain-ingest into .opencode/skills/second-brain-ingest/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "second-brain-ingest", 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-ingest- GitHub stars
- 153
- Token cost
- ~3.8k tokens
- SKILL.md length
- 1,897 words
- Files
- 1
- Skills in repo
- 15
- Repo updated
- First seen
- Licence
- None found
At a glance
Read new or changed files in raw/, synthesise content into wiki/ topic articles, rebuild INDEX.md, and update the ingest manifest.
- Works in 6 steps: Read context and obtain the… → Build the processing queue from the plan → Process each file in the queue → …
- Tasks that involve Second brain
- SKILL.md covers Preconditions, Manifest Format, Wiki Article Format and Execution Steps, plus 2 more sections
- Calls python3
What it does
Second Brain Ingest is an agent skill from PieroSierra/SecondBrain. Read new or changed files in raw/, synthesise content into wiki/ topic articles, rebuild INDEX.md, and update the ingest manifest.
Its SKILL.md is about 3.8k 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. 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
Example prompts
- “/second-brain-ingest”
Requirements
- Python 3
Workflow steps
6 steps, taken from the step headings in SKILL.md.
- Read context and obtain the deterministic scan plan
- Build the processing queue from the plan
- Process each file in the queue
- Rebuild INDEX.md
- Confirm completion and finalize state
- Report
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
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
Second Brain Ingest loads about 3.8k tokens when it runs. Until then it costs about 38 tokens; SKILL.md has 1,897 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 1,897 words (~3,795 tokens).
“Read new or changed files in raw/, synthesise their content into wiki/ topic articles, rebuild wiki/INDEX.md, and update the ingest manifest. This is the core pipeline of the knowledge base.”
- name
- second-brain-ingest
- user-invocable
- true
Files
Just SKILL.md in .claude/skills/second-brain-ingest of PieroSierra/SecondBrain.
Open the folder on GitHubat commit cdcf96f
Compare with similar skills
Second Brain Ingest 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 Ingest this skillPieroSierra/SecondBrain | 153 | — | ~3.8k | Automated safety check: Pass | None | |
| Obsidian Canvas BoardsAgriciDaniel/claude-obsidian | 15k | — | ~1.4k | Automated safety check: Pass | MIT | |
| 3D Brainnateherkai/AIS-OS | 1.6k | — | ~2.1k | Automated safety check: Pass | Custom licence | |
| Icm ArchitectRinDig/icm-architect | 1.8k | — | ~3.2k | Automated safety check: Pass | MIT | |
| Second BrainNicholasSpisak/second-brain | 737 | — | ~1.5k | Automated safety check: Notes | None | |
| Cascading Goal Trackerballred/obsidian-claude-pkm | 1.9k | — | ~1.5k | Automated safety check: Pass | MIT |
Similar skills
3D Brain
nateherkai/AIS-OS
A skill your agent uses when someone asks to build a 3D brain, visualize their AIOS or second brain, turn their knowledge into an interactive graph, or run /3d-brain or /3D brain.
Icm Architect
RinDig/icm-architect
Design any process, idea, problem, or body of knowledge into an ICM (Interpretable Context Methodology) workspace — folder structure as agent architecture — or restructure an existing folder, repo…
Second Brain
NicholasSpisak/second-brain
Set up a new Obsidian knowledge base with the LLM Wiki pattern.
Cascading Goal Tracker
ballred/obsidian-claude-pkm
Tracks three-year, yearly, monthly, and weekly goals in linked Markdown files, calculating completion percentages and flagging stalled goals.
Karpathy Wiki
SherwinQ/karpathy-wiki
A skill your agent uses when building or maintaining a personal knowledge base with LLM assistance.
More from PieroSierra/SecondBrain
All 15 skills in this repoSecond Brain Delint
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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
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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 Ingest
What does Second Brain Ingest do?
Read new or changed files in raw/, synthesise content into wiki/ topic articles, rebuild INDEX.md, and update the ingest manifest. Second Brain Ingest is an agent skill from PieroSierra/SecondBrain.md, and update the ingest manifest.
When should I use Second Brain Ingest?
Second Brain Ingest fits situations like: tasks that involve Second brain.
How do I install Second Brain Ingest in Claude Code?
Run `npx skills add PieroSierra/SecondBrain --skill second-brain-ingest -a claude-code`. Or copy the skill folder (.claude/skills/second-brain-ingest in PieroSierra/SecondBrain) into .claude/skills/second-brain-ingest in your project. Claude Code loads it when a task matches its description.
How do I install Second Brain Ingest in Codex?
Run `npx skills add PieroSierra/SecondBrain --skill second-brain-ingest -a codex`. Or copy the skill folder (.claude/skills/second-brain-ingest in PieroSierra/SecondBrain) into .agents/skills/second-brain-ingest in your project. Codex loads it when a task matches its description.
Can I use Second Brain Ingest 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-ingest -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-ingest, .gemini/skills/second-brain-ingest, .github/skills/second-brain-ingest and .opencode/skills/second-brain-ingest in your project.
What does Second Brain Ingest need to run?
Going by SKILL.md and its folder, Second Brain Ingest needs the command-line tools its instructions call (python3). Our summary lists: Python 3.
Does Second Brain Ingest 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 Ingest 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 Ingest use?
No licence was found for Second Brain Ingest or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.
How many tokens does Second Brain Ingest use?
About 3.8k tokens (SKILL.md is roughly 15k 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 Ingest?
Skills that share tags, products or a category with Second Brain Ingest: Obsidian Canvas Boards (AgriciDaniel/claude-obsidian, 15k stars), 3D Brain (nateherkai/AIS-OS, 1.6k stars), Icm Architect (RinDig/icm-architect, 1.8k stars) and Second Brain (NicholasSpisak/second-brain, 737 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Second Brain Ingest?
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.