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.
Create CodeTour .tour files — persona-targeted, step-by-step walkthroughs with real file and line anchors.
Install Code Tour
$ npx skills add Sidiora-Labs/centra-llm-agents --skill code-tour -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents code-tour --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/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .claude/skills && cp -r skills-src/protocol/skills/code-tour .claude/skills/code-tour && 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 "code-tour" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/code-tour into .claude/skills/code-tour/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-tour", 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/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/code-tourType 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 Sidiora-Labs/centra-llm-agents --skill code-tour -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents code-tour --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .agents/skills && cp -r skills-src/protocol/skills/code-tour .agents/skills/code-tour && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "code-tour" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/code-tour into .agents/skills/code-tour/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-tour", 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 Sidiora-Labs/centra-llm-agents --skill code-tour -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents code-tour --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/protocol/skills/code-tour .cursor/skills/code-tour && 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 "code-tour" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/code-tour into .cursor/skills/code-tour/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-tour", 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/Sidiora-Labs/centra-llm-agents.git --path protocol/skills/code-tour--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 Sidiora-Labs/centra-llm-agents --skill code-tour -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents code-tour --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/protocol/skills/code-tour .gemini/skills/code-tour && 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 "code-tour" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/code-tour into .gemini/skills/code-tour/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-tour", 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 Sidiora-Labs/centra-llm-agents code-tourInstalls 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 Sidiora-Labs/centra-llm-agents --skill code-tour -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .github/skills && cp -r skills-src/protocol/skills/code-tour .github/skills/code-tour && 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 "code-tour" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/code-tour into .github/skills/code-tour/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-tour", 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 Sidiora-Labs/centra-llm-agents --skill code-tour -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Sidiora-Labs/centra-llm-agents code-tour --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Sidiora-Labs/centra-llm-agents.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/protocol/skills/code-tour .opencode/skills/code-tour && 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 "code-tour" agent skill from https://github.com/Sidiora-Labs/centra-llm-agents/tree/main/protocol/skills/code-tour into .opencode/skills/code-tour/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "code-tour", 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
code-tour- GitHub stars
- 115
- Token cost
- ~1.7k tokens
- SKILL.md length
- 685 words
- Files
- 2
- Skills in repo
- 30
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Create CodeTour .tour files — persona-targeted, step-by-step walkthroughs with real file and line anchors.
- Works in 5 steps: Discover → Infer the reader → Read and verify anchors → …
- Onboarding tours
- SKILL.md covers When to Use, When NOT to Use, Workflow and Step Types, plus 6 more sections
- Reaches github.com and aka.ms
What it does
Code Tour is an agent skill from Sidiora-Labs/centra-llm-agents. Create CodeTour .tour files — persona-targeted, step-by-step walkthroughs with real file and line anchors. Use for onboarding tours, architecture walkthroughs, PR tours, RCA tours, and structured "explain how this works" requests.
Its SKILL.md is about 1.7k tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file.
It sits in Development, covering Codebase onboarding. The repository describes itself as: A stateful AI operating system for serious, long-horizon work.
When your agent uses it
- Onboarding tours
- Architecture walkthroughs
- Structured explain how this works requests
Example prompts
- “explain how this works”
- “/code-tour”
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Discover
- Infer the reader
- Read and verify anchors
- Write the .tour
- Validate
What it can do on your machine
Read from SKILL.md and the folder at commit 01c6aef. 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 json).
From the folder's file list and the shell code blocks in SKILL.md.
Network
Hosts in commands or code, which the agent is likely to contact:
github.comaka.ms
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
Code Tour loads about 1.7k tokens when it runs. Until then it costs about 61 tokens; SKILL.md has 685 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 685 words (~1,679 tokens).
“Create CodeTour .tour files for codebase walkthroughs that open directly to real files and line ranges. Tours live in .tours/ and are meant for the CodeTour format, not ad hoc Markdown notes.”
- name
- code-tour
- origin
- ECC
Files
SKILL.md and 1 other file in protocol/skills/code-tour of Sidiora-Labs/centra-llm-agents.
- SKILL.md
- SKILL.mtx
Open the folder on GitHubat commit 01c6aef
Compare with similar skills
Code Tour 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 |
|---|---|---|---|---|---|---|
| Code Tour this skillSidiora-Labs/centra-llm-agents | 115 | — | ~1.7k | Automated safety check: Pass | Custom licence | |
| Codebase Knowledge Graph Q&AEgonex-AI/Understand-Anything | 85k | 1 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Understand ExplainEgonex-AI/Understand-Anything | 85k | 1 repos | ~1.3k | Automated safety check: Pass | MIT | |
| Repomix Codebase Exploreryamadashy/repomix | 29k | 1 repos | ~2.7k | Automated safety check: Pass | MIT | |
| Project Onboarding Guide from Knowledge GraphEgonex-AI/Understand-Anything | 85k | — | ~1.2k | Automated safety check: Pass | MIT | |
| Deepwiki Rssopaco/deepwiki-rs | 3.1k | — | ~748 | Automated safety check: Pass | MIT |
Similar skills
Understand Explain
Egonex-AI/Understand-Anything
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.
Repomix Codebase Explorer
yamadashy/repomix
Packs a local or remote repository into a single AI-friendly file with the Repomix CLI, then reads and searches that output to explain structure, find patterns or report metrics.
Project Onboarding Guide from Knowledge Graph
Egonex-AI/Understand-Anything
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.
Deepwiki Rs
sopaco/deepwiki-rs
AI-powered Rust documentation generation engine for comprehensive codebase analysis, C4 architecture diagrams, and automated technical documentation.
GitDiagram Repository Overview
ahmedkhaleel2004/gitdiagram
Explains the architecture of a public GitHub repository through GitDiagram: how the code is organized, the main components with paths, and a Mermaid diagram.
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Related
Categories
Questions about Code Tour
What does Code Tour do?
Create CodeTour .tour files — persona-targeted, step-by-step walkthroughs with real file and line anchors. Code Tour is an agent skill from Sidiora-Labs/centra-llm-agents.tour files — persona-targeted, step-by-step walkthroughs with real file and line anchors.
When should I use Code Tour?
Code Tour fits situations like: onboarding tours; architecture walkthroughs; structured explain how this works requests.
How do I install Code Tour in Claude Code?
Run `npx skills add Sidiora-Labs/centra-llm-agents --skill code-tour -a claude-code`. Or copy the skill folder (protocol/skills/code-tour in Sidiora-Labs/centra-llm-agents) into .claude/skills/code-tour in your project. Claude Code loads it when a task matches its description.
How do I install Code Tour in Codex?
Run `npx skills add Sidiora-Labs/centra-llm-agents --skill code-tour -a codex`. Or copy the skill folder (protocol/skills/code-tour in Sidiora-Labs/centra-llm-agents) into .agents/skills/code-tour in your project. Codex loads it when a task matches its description.
Can I use Code Tour 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 Sidiora-Labs/centra-llm-agents --skill code-tour -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/code-tour, .gemini/skills/code-tour, .github/skills/code-tour and .opencode/skills/code-tour in your project.
What does Code Tour need to run?
SKILL.md names no scripts, command-line tools or credentials: Code Tour is instructions for the agent only.
Does Code Tour access the network?
SKILL.md names 2 domains. In commands or code: github.com and aka.ms; the agent is likely to contact these when it follows the instructions. This is read from the text; nothing was executed.
Is Code Tour 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 Code Tour use?
Code Tour 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 Code Tour use?
About 1.7k tokens (SKILL.md is roughly 6.7k 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 Code Tour?
Skills that share tags, products or a category with Code Tour: Codebase Knowledge Graph Q&A (Egonex-AI/Understand-Anything, 85k stars), Understand Explain (Egonex-AI/Understand-Anything, 85k stars), Repomix Codebase Explorer (yamadashy/repomix, 29k stars) and Project Onboarding Guide from Knowledge Graph (Egonex-AI/Understand-Anything, 85k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Code Tour?
Sidiora-Labs (a GitHub organization) maintains it in Sidiora-Labs/centra-llm-agents, which has 115 GitHub stars. The repository holds 30 skills in this directory. The repository was last updated on September 18, 2026.
Source: Sidiora-Labs/centra-llm-agents on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.