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Agent skill

Langfuse Codebase Navigator

by langfuse in langfuse/langfuse

Navigate Langfuse repositories, code areas, and agent skills.

Custom licenceAuto-check passedAI & LLM Engineering

Install Langfuse Codebase Navigator

skills CLI
$ npx skills add langfuse/langfuse --skill langfuse-codebase-navigator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install langfuse/langfuse langfuse-codebase-navigator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/langfuse/langfuse.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/langfuse-codebase-navigator .claude/skills/langfuse-codebase-navigator && rm -rf skills-src

Use ~/.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/

Facts

Skill name
langfuse-codebase-navigator
GitHub stars
35k
Token cost
~1.4k tokens
SKILL.md length
571 words
Files
2 (incl. references)
Skills in repo
33
Repo updated
First seen
Licence
Custom licence

At a glance

Navigate Langfuse repositories, code areas, and agent skills.

  • Works in 5 steps: Classify the request by domain → Read references/repository-map.md when… → Before editing, check for a more… → …
  • Choose the right repo
  • SKILL.md covers Default Workflow, Quick Skill Routing, Search Patterns and Routing Output
  • Calls rg, gh and git

What it does

Langfuse Codebase Navigator is an agent skill from langfuse/langfuse. Navigate Langfuse repositories, code areas, and agent skills. Use to locate code, choose the right repo or skill, search across the Langfuse organization, or orient before implementation, debugging, documentation, support, or operations.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/repository-map.md`).

It sits in AI & LLM Engineering, covering LLM observability. It works with Langfuse. The repository describes itself as: 🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

When your agent uses it

  • Choose the right repo
  • Search across the Langfuse organization
  • Orient before implementation

Example prompts

  • “/langfuse-codebase-navigator”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. Classify the request by domain
  2. Read references/repository-map.md when the route is not obvious, the task spans repos, or the user asks for org-level orientation.
  3. Before editing, check for a more specific skill in the target repo or a sibling internal-skills checkout. If one matches, open it and…
  4. Search locally first in sibling repos next to the current checkout. If a needed repo is absent, clone it into the same parent directory…
  5. Return or act on a route decision with: target repo(s), relevant folders/files, specific skills to load, and the next search command or…

What it can do on your machine

Read from SKILL.md and the folder at commit 8b58764. 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:

    • rg
    • gh
    • git

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use gh and git, which can reach the network depending on how they are called.

    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

Langfuse Codebase Navigator loads about 1.4k tokens when it runs, and up to ~5k if it reads all its reference files. Until then it costs about 66 tokens; SKILL.md has 571 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~66
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~5k

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 571 words (~1,367 tokens).

“Use this as the first stop for Langfuse org navigation. Your job is to choose the right repository, code area, and more specific skill before doing deeper work.”

— opening of SKILL.md by langfuse, Custom licence
name
langfuse-codebase-navigator

Read the full SKILL.md on GitHub

Files

SKILL.md and 1 other file (references) in .agents/skills/langfuse-codebase-navigator of langfuse/langfuse.

  • SKILL.md
  • references/repository-map.md

Open the folder on GitHubat commit 8b58764

Compare with similar skills

Langfuse Codebase Navigator 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.

Langfuse Codebase Navigator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Langfuse Codebase Navigator this skilllangfuse/langfuse35k—~1.4kAutomated safety check: PassCustom licence
Langfuse Integration Pagelangfuse/langfuse-docs246—~3.7kAutomated safety check: PassMIT
Langfuselangfuse/skills299—~2.1kAutomated safety check: NotesMIT
Add Yourself To Team Langfuselangfuse/langfuse-docs246—~548Automated safety check: PassMIT
LangfuseAnil-matcha/awesome-muse-connectors1.3k—~773Automated safety check: PassMIT
AI Observabilityomer-metin/skills-for-antigravity162—~578Automated safety check: PassApache-2.0

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Works with

Categories

Questions about Langfuse Codebase Navigator

What does Langfuse Codebase Navigator do?

Navigate Langfuse repositories, code areas, and agent skills. Langfuse Codebase Navigator is an agent skill from langfuse/langfuse. Navigate Langfuse repositories, code areas, and agent skills.

When should I use Langfuse Codebase Navigator?

Langfuse Codebase Navigator fits situations like: choose the right repo; search across the Langfuse organization; orient before implementation.

How do I install Langfuse Codebase Navigator in Claude Code?

Run `npx skills add langfuse/langfuse --skill langfuse-codebase-navigator -a claude-code`. Or copy the skill folder (.agents/skills/langfuse-codebase-navigator in langfuse/langfuse) into .claude/skills/langfuse-codebase-navigator in your project. Claude Code loads it when a task matches its description.

How do I install Langfuse Codebase Navigator in Codex?

Run `npx skills add langfuse/langfuse --skill langfuse-codebase-navigator -a codex`. Or copy the skill folder (.agents/skills/langfuse-codebase-navigator in langfuse/langfuse) into .agents/skills/langfuse-codebase-navigator in your project. Codex loads it when a task matches its description.

Can I use Langfuse Codebase Navigator 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 langfuse/langfuse --skill langfuse-codebase-navigator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/langfuse-codebase-navigator, .gemini/skills/langfuse-codebase-navigator, .github/skills/langfuse-codebase-navigator and .opencode/skills/langfuse-codebase-navigator in your project.

What does Langfuse Codebase Navigator need to run?

Going by SKILL.md and its folder, Langfuse Codebase Navigator needs the command-line tools its instructions call (rg, gh and git).

Does Langfuse Codebase Navigator access the network?

SKILL.md contains no URLs. Its commands use gh and git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Langfuse Codebase Navigator 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 Langfuse Codebase Navigator use?

Langfuse Codebase Navigator 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 Langfuse Codebase Navigator use?

About 1.4k tokens (SKILL.md is roughly 5.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.6k tokens, read only when the agent opens those files.

What are the alternatives to Langfuse Codebase Navigator?

Skills that share tags, products or a category with Langfuse Codebase Navigator: Langfuse Integration Page (langfuse/langfuse-docs, 246 stars), Langfuse (langfuse/skills, 299 stars), Add Yourself To Team Langfuse (langfuse/langfuse-docs, 246 stars) and Langfuse (Anil-matcha/awesome-muse-connectors, 1.3k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Langfuse Codebase Navigator?

langfuse (a GitHub organization) maintains it in langfuse/langfuse, which has 35,460 GitHub stars. The repository holds 33 skills in this directory. The repository was last updated on October 7, 2026.

Source: langfuse/langfuse on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.