Agent skill

Levyra Extractor

by LUC4N3X in LUC4N3X/Levyra-deepsound

Implement, debug, or review Levyra InnerTube, YouTube extraction, stream resolution, player-config synchronization, token, retry, timeout, cache, and network fallback behavior.

GPL-3.0Auto-check passed

Install Levyra Extractor

skills CLI
$ npx skills add LUC4N3X/Levyra-deepsound --skill levyra-extractor -a claude-code

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

GitHub CLI
$ gh skill install LUC4N3X/Levyra-deepsound levyra-extractor --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/LUC4N3X/Levyra-deepsound.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/levyra-extractor .claude/skills/levyra-extractor && 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
levyra-extractor
GitHub stars
533
Token cost
~505 tokens
SKILL.md length
208 words
Files
1
Skills in repo
22
Repo updated
First seen
Licence
GPL-3.0

At a glance

Implement, debug, or review Levyra InnerTube, YouTube extraction, stream resolution, player-config synchronization, token, retry, timeout, cache, and network fallback behavior.

  • Works in 4 steps: Read the root AGENTS.md and the nearest… → Read docs/ARCHITECTURE.md. → Read… → …
  • SKILL.md covers Required context, Change contract, Guardrails and Validation
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Levyra Extractor is an agent skill from LUC4N3X/Levyra-deepsound. Implement, debug, or review Levyra InnerTube, YouTube extraction, stream resolution, player-config synchronization, token, retry, timeout, cache, and network fallback behavior.

Its SKILL.md is about 510 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It works with YouTube. The repository describes itself as: Open-source music player for Android and Windows with no accounts or tracking. Built for quick discovery, synced lyrics, radio, and rich artwork ♫. The licence is GPL-3.0.

Example prompts

  • “/levyra-extractor”

Workflow steps

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

  1. Read the root AGENTS.md and the nearest applicable AGENTS.md.
  2. Read docs/ARCHITECTURE.md.
  3. Read .agents/claude/rules/extractor-network.md and .agents/claude/rules/security.md.
  4. Inspect the resolver, clients, runtime configuration, caches, in-flight work, fallback order, workflows, and nearby tests.

What it can do on your machine

Read from SKILL.md and the folder at commit 35cd2be. 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.

    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

Levyra Extractor loads about 505 tokens when it runs. Until then it costs about 48 tokens; SKILL.md has 208 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~48
When it runs · the whole SKILL.md, loaded when a task matches
~505

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 LUC4N3X/Levyra-deepsound at commit 35cd2be, republished under its GPL-3.0 licence (© LUC4N3X). 208 words, ~505 tokens.

Download SKILL.mdSave it as .claude/skills/levyra-extractor/SKILL.md (or your agent's skills folder).
name
levyra-extractor
description
Implement, debug, or review Levyra InnerTube, YouTube extraction, stream resolution, player-config synchronization, token, retry, timeout, cache, and network fallback behavior.

Levyra extractor workflow

Required context

  1. Read the root AGENTS.md and the nearest applicable AGENTS.md.
  2. Read docs/ARCHITECTURE.md.
  3. Read .agents/claude/rules/extractor-network.md and .agents/claude/rules/security.md.
  4. Inspect the resolver, clients, runtime configuration, caches, in-flight work, fallback order, workflows, and nearby tests.

Change contract

Map the current request path and explicitly distinguish:

  • successful resolution;
  • conclusive no-match;
  • transient transport, timeout, server, parsing, or verification failure;
  • cancellation;
  • stale or invalid runtime configuration.

Guardrails

  • Preserve the current bounded fallback order unless the task explicitly changes it.
  • Preserve last-known-good runtime configuration until a replacement is validated and published atomically.
  • Do not hardcode private credentials, cookies, account tokens, visitor data, signed URLs, or production secrets.
  • Keep retries, timeouts, concurrency, traffic, cache growth, and response sizes bounded.
  • Do not negative-cache transient or inconclusive failures.
  • Re-throw CancellationException; one caller's cancellation must not poison shared work or other waiters.
  • Validate provider-controlled URLs, redirect hops, hosts, ports, resolved destinations, MIME types, and response sizes.
  • Do not weaken validation merely to accept one upstream response.

Validation

Add or update focused tests for fallback order, configuration parsing and epoch changes, invalid upstream payloads, timeout, cancellation, cache semantics, stale publication, and URL/redirect rejection when applicable.

Inspect .github/workflows/sync-player-configs.yml for configuration changes. A successful no-change sync is not evidence that a new configuration was published.

© LUC4N3X, GPL-3.0. 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 .agents/skills/levyra-extractor of LUC4N3X/Levyra-deepsound.

Open the folder on GitHubat commit 35cd2be

Compare with similar skills

Levyra Extractor 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.

Levyra Extractor compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Levyra Extractor this skillLUC4N3X/Levyra-deepsound533—~505Automated safety check: PassGPL-3.0
MarkitdownImCa0/just-laws78214 repos~3.2kAutomated safety check: NotesMIT
Banner Design Systemnextlevelbuilder/ui-ux-pro-max-skill134k1 repos~1.8kAutomated safety check: PassMIT
Agent ReachPanniantong/Agent-Reach94k—~1.4kAutomated safety check: PassMIT
Last30daysmvanhorn/last30days-skill64k—~7.9kAutomated safety check: NotesMIT
Baoyu URL To Markdownsdyckjq-lab/llm-wiki-skill2.5k2 repos~3.2kAutomated safety check: PassNone

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  • Levyra Android Performance

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Works with

Questions about Levyra Extractor

What does Levyra Extractor do?

Implement, debug, or review Levyra InnerTube, YouTube extraction, stream resolution, player-config synchronization, token, retry, timeout, cache, and network fallback behavior. Levyra Extractor is an agent skill from LUC4N3X/Levyra-deepsound. Implement, debug, or review Levyra InnerTube, YouTube extraction, stream resolution, player-config synchronization, token, retry, timeout, cache, and network fallback behavior.

How do I install Levyra Extractor in Claude Code?

Run `npx skills add LUC4N3X/Levyra-deepsound --skill levyra-extractor -a claude-code`. Or copy the skill folder (.agents/skills/levyra-extractor in LUC4N3X/Levyra-deepsound) into .claude/skills/levyra-extractor in your project. Claude Code loads it when a task matches its description.

How do I install Levyra Extractor in Codex?

Run `npx skills add LUC4N3X/Levyra-deepsound --skill levyra-extractor -a codex`. Or copy the skill folder (.agents/skills/levyra-extractor in LUC4N3X/Levyra-deepsound) into .agents/skills/levyra-extractor in your project. Codex loads it when a task matches its description.

Can I use Levyra Extractor 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 LUC4N3X/Levyra-deepsound --skill levyra-extractor -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/levyra-extractor, .gemini/skills/levyra-extractor, .github/skills/levyra-extractor and .opencode/skills/levyra-extractor in your project.

What does Levyra Extractor need to run?

SKILL.md names no scripts, command-line tools or credentials: Levyra Extractor is instructions for the agent only.

Does Levyra Extractor 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 Levyra Extractor 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 Levyra Extractor use?

Levyra Extractor is published under the GPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Levyra Extractor use?

About 505 tokens (SKILL.md is roughly 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 Levyra Extractor?

Skills that share tags, products or a category with Levyra Extractor: Markitdown (ImCa0/just-laws, 782 stars), Banner Design System (nextlevelbuilder/ui-ux-pro-max-skill, 134k stars), Agent Reach (Panniantong/Agent-Reach, 94k stars) and Last30days (mvanhorn/last30days-skill, 64k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Levyra Extractor?

LUC4N3X (a GitHub user) maintains it in LUC4N3X/Levyra-deepsound, which has 533 GitHub stars. The repository holds 22 skills in this directory. The repository was last updated on October 9, 2026.

Source: LUC4N3X/Levyra-deepsound on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.