Codebase Knowledge Graph Q&A
Egonex-AI/Understand-Anything
Answers questions about a codebase by searching a prebuilt knowledge graph of its files, functions, classes and dependencies, not by rereading every source file.
Append a dated entry to the master Brain/CHANGELOG.md summarizing this session's knowledge-graph changes - notes created, connections/links added, and significant edits.
Install Update Changelog
$ npx skills add Abilityai/cornelius --skill update-changelog -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Abilityai/cornelius update-changelog --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/Abilityai/cornelius.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/update-changelog .claude/skills/update-changelog && 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 "update-changelog" agent skill from https://github.com/Abilityai/cornelius/tree/main/.claude/skills/update-changelog into .claude/skills/update-changelog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-changelog", 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/Abilityai/cornelius/tree/main/.claude/skills/update-changelogType 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 Abilityai/cornelius --skill update-changelog -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Abilityai/cornelius update-changelog --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Abilityai/cornelius.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/update-changelog .agents/skills/update-changelog && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "update-changelog" agent skill from https://github.com/Abilityai/cornelius/tree/main/.claude/skills/update-changelog into .agents/skills/update-changelog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-changelog", 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 Abilityai/cornelius --skill update-changelog -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Abilityai/cornelius update-changelog --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Abilityai/cornelius.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/update-changelog .cursor/skills/update-changelog && 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 "update-changelog" agent skill from https://github.com/Abilityai/cornelius/tree/main/.claude/skills/update-changelog into .cursor/skills/update-changelog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-changelog", 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/Abilityai/cornelius.git --path .claude/skills/update-changelog--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 Abilityai/cornelius --skill update-changelog -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Abilityai/cornelius update-changelog --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Abilityai/cornelius.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/update-changelog .gemini/skills/update-changelog && 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 "update-changelog" agent skill from https://github.com/Abilityai/cornelius/tree/main/.claude/skills/update-changelog into .gemini/skills/update-changelog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-changelog", 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 Abilityai/cornelius update-changelogInstalls 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 Abilityai/cornelius --skill update-changelog -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Abilityai/cornelius.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/update-changelog .github/skills/update-changelog && 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 "update-changelog" agent skill from https://github.com/Abilityai/cornelius/tree/main/.claude/skills/update-changelog into .github/skills/update-changelog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-changelog", 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 Abilityai/cornelius --skill update-changelog -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Abilityai/cornelius update-changelog --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Abilityai/cornelius.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/update-changelog .opencode/skills/update-changelog && 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 "update-changelog" agent skill from https://github.com/Abilityai/cornelius/tree/main/.claude/skills/update-changelog into .opencode/skills/update-changelog/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "update-changelog", 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
update-changelog- GitHub stars
- 109
- Token cost
- ~806 tokens
- SKILL.md length
- 267 words
- Files
- 1
- Skills in repo
- 54
- Repo updated
- First seen
- Licence
- MIT
At a glance
Append a dated entry to the master Brain/CHANGELOG.md summarizing this session's knowledge-graph changes - notes created, connections/links added, and significant edits.
- Works in 3 steps: Identify Recent Changes - Review the… → Read Existing Changelog - Read… → Append New Entry - Add a new dated entry…
- Tasks that involve Changelog and release notes
- SKILL.md covers Your Task, Format Example, Important Guidelines and Output, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Update Changelog is an agent skill from Abilityai/cornelius. Append a dated entry to the master Brain/CHANGELOG.md summarizing this session's knowledge-graph changes - notes created, connections/links added, and significant edits. Use after a vault working session to record what changed and why it matters.
Its SKILL.md is about 810 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 Development, covering Changelog and release notes and Knowledge graphs. The repository describes itself as: AI-powered second brain template for Claude Code + Obsidian. The licence is MIT.
When your agent uses it
- Tasks that involve Changelog and release notes
- Tasks that involve Knowledge graphs
Example prompts
- “/update-changelog”
Workflow steps
3 steps, taken from the first numbered list in SKILL.md.
- Identify Recent Changes - Review the session history to identify
- Read Existing Changelog - Read $VAULT_BASE_PATH/Brain/CHANGELOG.md to see the current state
- Append New Entry - Add a new dated entry at the TOP of the changelog with
What it can do on your machine
Read from SKILL.md and the folder at commit b9bea90. 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
Update Changelog loads about 806 tokens when it runs. Until then it costs about 66 tokens; SKILL.md has 267 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
The full file from Abilityai/cornelius at commit b9bea90, republished under its MIT licence (© Abilityai). 267 words, ~806 tokens.
Download SKILL.mdSave it as
.claude/skills/update-changelog/SKILL.md (or your agent's skills folder).- name
- update-changelog
- description
- Append a dated entry to the master Brain/CHANGELOG.md summarizing this session's knowledge-graph changes - notes created, connections/links added, and significant edits. Use after a vault working session to record what changed and why it matters.
Update Knowledge Graph Changelog
You are updating the Brain vault changelog to track recent modifications to the knowledge graph.
Your Task
Identify Recent Changes - Review the session history to identify:
- New notes created
- New connections/links added between existing notes
- Significant edits to note content
- Focus only on changes made during THIS session
Read Existing Changelog - Read
$VAULT_BASE_PATH/Brain/CHANGELOG.mdto see the current stateAppend New Entry - Add a new dated entry at the TOP of the changelog with:
- Date and session identifier
- List of changes in format:
- [ACTION] Note Title: Brief description (→ Connected to: [[Other Note]]) - Keep each entry to 1-2 sentences maximum
- Use action verbs: CREATED, CONNECTED, UPDATED, LINKED
Format Example
## 2025-10-24 - Session [Brief Description]
- CONNECTED [[Psychological Safety]] → [[Flow is impossible without Autonomy]]: Psychological safety creates autonomy prerequisite for flow by removing fear-based constraints.
- CONNECTED [[Radical Ownership]] → [[Flow is impossible without Autonomy]]: True ownership requires autonomy; permission-seeking eliminates both.
- CONNECTED [[Flow is a selfless state]] ↔ [[In Buddhism - Self is an Illusion]]: Flow provides empirical validation of Buddhist insight through performance.
- CONNECTED [[Entrepreneurship is de-risking]] → [[Belief deals with Uncertainty]]: Entrepreneurs hold beliefs about uncertain futures without eliminating uncertainty.
- CONNECTED [[Taking on external obligations]] → [[Radical Ownership]]: Obligations stem from permission-seeking rather than ownership.Important Guidelines
- Only document changes from THIS session
- Be concise - max 2 sentences per change
- Use bidirectional arrows (↔) for mutual connections, directional (→) for one-way
- Group related changes together
- Focus on WHAT was connected and WHY it matters (the insight)
- If no changelog exists, create it with a header explaining its purpose
Output
After updating, show the user:
- Number of changes logged
- The new entry you added
- Confirmation that CHANGELOG.md was updated
State Dependencies
| Source | Location | Read | Write | Description |
|---|---|---|---|---|
| Master changelog | Brain/CHANGELOG.md | X | X | Main change log to update |
| Session history | Current conversation | X | Changes made this session |
Completion Checklist
- Session changes identified (notes created, connections made, edits)
- Existing CHANGELOG.md read
- New dated entry added at TOP of changelog
- Action verbs used (CREATED, CONNECTED, UPDATED, LINKED)
- Entries concise (max 2 sentences each)
- Arrow notation correct (→ for one-way, ↔ for bidirectional)
- Number of changes reported to user
- Confirmation provided that CHANGELOG.md was updated
© Abilityai, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
Just SKILL.md in .claude/skills/update-changelog of Abilityai/cornelius.
Open the folder on GitHubat commit b9bea90
Compare with similar skills
Update Changelog 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 |
|---|---|---|---|---|---|---|
| Update Changelog this skillAbilityai/cornelius | 109 | — | ~806 | Automated safety check: Pass | MIT | |
| Codebase Knowledge Graph Q&AEgonex-AI/Understand-Anything | 86k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Understand Diff AnalysisEgonex-AI/Understand-Anything | 86k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Understand ExplainEgonex-AI/Understand-Anything | 86k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Project Onboarding Guide from Knowledge GraphEgonex-AI/Understand-Anything | 86k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Explore Codebase with Graphtirth8205/code-review-graph | 32k | 1 repos | ~335 | Automated safety check: Pass | MIT |
Similar skills
Understand Diff Analysis
Egonex-AI/Understand-Anything
Reads your git changes or a pull request against a prebuilt knowledge graph of the project to explain what changed, which components are affected and what is risky.
Understand Explain
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Gives an in-depth explanation of one file, function or module by reading the project's knowledge graph and checking that the graph is still fresh.
Project Onboarding Guide from Knowledge Graph
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Writes an onboarding guide for new team members from a project's existing knowledge graph, after checking that the graph still matches the current commit.
Explore Codebase with Graph
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Store Submit
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Related
Categories
Questions about Update Changelog
What does Update Changelog do?
Append a dated entry to the master Brain/CHANGELOG.md summarizing this session's knowledge-graph changes - notes created, connections/links added, and significant edits. Update Changelog is an agent skill from Abilityai/cornelius.md summarizing this session's knowledge-graph changes - notes created, connections/links added, and significant edits.
When should I use Update Changelog?
Update Changelog fits situations like: tasks that involve Changelog and release notes; tasks that involve Knowledge graphs.
How do I install Update Changelog in Claude Code?
Run `npx skills add Abilityai/cornelius --skill update-changelog -a claude-code`. Or copy the skill folder (.claude/skills/update-changelog in Abilityai/cornelius) into .claude/skills/update-changelog in your project. Claude Code loads it when a task matches its description.
How do I install Update Changelog in Codex?
Run `npx skills add Abilityai/cornelius --skill update-changelog -a codex`. Or copy the skill folder (.claude/skills/update-changelog in Abilityai/cornelius) into .agents/skills/update-changelog in your project. Codex loads it when a task matches its description.
Can I use Update Changelog 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 Abilityai/cornelius --skill update-changelog -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/update-changelog, .gemini/skills/update-changelog, .github/skills/update-changelog and .opencode/skills/update-changelog in your project.
What does Update Changelog need to run?
SKILL.md names no scripts, command-line tools or credentials: Update Changelog is instructions for the agent only.
Does Update Changelog 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 Update Changelog 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 Update Changelog use?
Update Changelog is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Update Changelog use?
About 806 tokens (SKILL.md is roughly 3.2k 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 Update Changelog?
Skills that share tags, products or a category with Update Changelog: Codebase Knowledge Graph Q&A (Egonex-AI/Understand-Anything, 86k stars), Understand Diff Analysis (Egonex-AI/Understand-Anything, 86k stars), Understand Explain (Egonex-AI/Understand-Anything, 86k stars) and Project Onboarding Guide from Knowledge Graph (Egonex-AI/Understand-Anything, 86k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Update Changelog?
Abilityai (a GitHub organization) maintains it in Abilityai/cornelius, which has 109 GitHub stars. The repository holds 54 skills in this directory. The repository was last updated on October 8, 2026.
Source: Abilityai/cornelius on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.