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Agent skill

Subsonic Integration

by ad-repo in ad-repo/nullplayer

Subsonic/Navidrome API, authentication, music folder selection, streaming, and scrobbling.

Custom licenceAuto-check passedBackend & APIs

Install Subsonic Integration

skills CLI
$ npx skills add ad-repo/nullplayer --skill subsonic-integration -a claude-code

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

GitHub CLI
$ gh skill install ad-repo/nullplayer subsonic-integration --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/ad-repo/nullplayer.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/subsonic-integration .claude/skills/subsonic-integration && 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
subsonic-integration
GitHub stars
158
Token cost
~1.9k tokens
SKILL.md length
749 words
Files
1
Skills in repo
40
Repo updated
First seen
Licence
Custom licence

At a glance

Subsonic/Navidrome API, authentication, music folder selection, streaming, and scrobbling.

  • Working on Subsonic/Navidrome integration
  • SKILL.md covers Architecture, Authentication, Music Folders and API Endpoints, plus 7 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Library browsing

What it does

Subsonic Integration is an agent skill from ad-repo/nullplayer. Subsonic/Navidrome API, authentication, music folder selection, streaming, and scrobbling. Use when working on Subsonic/Navidrome integration, library browsing, music folder filtering, or playback reporting.

Its SKILL.md is about 1.9k 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 Backend & APIs. The repository describes itself as: nullPlayer is a free open source macOS media player with some unique features.

When your agent uses it

  • Working on Subsonic/Navidrome integration
  • Library browsing
  • Music folder filtering
  • Playback reporting

Example prompts

  • “/subsonic-integration”

What it can do on your machine

Read from SKILL.md and the folder at commit 3d87ce1. 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

Subsonic Integration loads about 1.9k tokens when it runs. Until then it costs about 57 tokens; SKILL.md has 749 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~57
When it runs · the whole SKILL.md, loaded when a task matches
~1.9k

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 749 words (~1,898 tokens).

“NullPlayer supports Subsonic-compatible servers (including Navidrome) for music streaming, browsing, and scrobbling.”

— opening of SKILL.md by ad-repo, Custom licence
name
subsonic-integration

Read the full SKILL.md on GitHub

Files

Just SKILL.md in skills/subsonic-integration of ad-repo/nullplayer.

Open the folder on GitHubat commit 3d87ce1

Compare with similar skills

Subsonic Integration 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.

Subsonic Integration compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Subsonic Integration this skillad-repo/nullplayer158—~1.9kAutomated safety check: PassCustom licence
Configuring Horizoncoollabsio/coolify63k4 repos~898Automated safety check: PassMIT
Nestjs Best Practicesrolling-scopes/rsschool-app10k6 repos~1.2kAutomated safety check: PassMIT
Sub2API AdminWei-Shaw/sub2api44k1 repos~717Automated safety check: PassLGPL-3.0
Firecrawl Build Onboardingfirecrawl/firecrawl190k1 repos~1.4kAutomated safety check: NotesISC
Obsidian BasesAtmosphere/atmosphere3.8k22 repos~3.2kAutomated safety check: PassApache-2.0

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  • Configuring Horizon

    coollabsio/coolify

    A skill your agent uses whenever the user mentions Horizon by name in a Laravel context.

    63k GitHub starsUsed in 4 repos~898 tokens
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  • Nestjs Best Practices

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    10k GitHub starsUsed in 6 repos~1.2k tokens
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    190k GitHub starsUsed in 1 repo~1.4k tokens
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  • Emby Integration

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  • Live UI Testing

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Categories

Questions about Subsonic Integration

What does Subsonic Integration do?

Subsonic/Navidrome API, authentication, music folder selection, streaming, and scrobbling. Subsonic Integration is an agent skill from ad-repo/nullplayer. Subsonic/Navidrome API, authentication, music folder selection, streaming, and scrobbling.

When should I use Subsonic Integration?

Subsonic Integration fits situations like: working on Subsonic/Navidrome integration; library browsing; music folder filtering; playback reporting.

How do I install Subsonic Integration in Claude Code?

Run `npx skills add ad-repo/nullplayer --skill subsonic-integration -a claude-code`. Or copy the skill folder (skills/subsonic-integration in ad-repo/nullplayer) into .claude/skills/subsonic-integration in your project. Claude Code loads it when a task matches its description.

How do I install Subsonic Integration in Codex?

Run `npx skills add ad-repo/nullplayer --skill subsonic-integration -a codex`. Or copy the skill folder (skills/subsonic-integration in ad-repo/nullplayer) into .agents/skills/subsonic-integration in your project. Codex loads it when a task matches its description.

Can I use Subsonic Integration 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 ad-repo/nullplayer --skill subsonic-integration -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/subsonic-integration, .gemini/skills/subsonic-integration, .github/skills/subsonic-integration and .opencode/skills/subsonic-integration in your project.

What does Subsonic Integration need to run?

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

Does Subsonic Integration 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 Subsonic Integration 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 Subsonic Integration use?

Subsonic Integration 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 Subsonic Integration use?

About 1.9k tokens (SKILL.md is roughly 7.6k 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 Subsonic Integration?

Skills that share tags, products or a category with Subsonic Integration: Configuring Horizon (coollabsio/coolify, 63k stars), Nestjs Best Practices (rolling-scopes/rsschool-app, 10k stars), Sub2API Admin (Wei-Shaw/sub2api, 44k stars) and Firecrawl Build Onboarding (firecrawl/firecrawl, 190k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Subsonic Integration?

ad-repo (a GitHub user) maintains it in ad-repo/nullplayer, which has 158 GitHub stars. The repository holds 40 skills in this directory. The repository was last updated on October 10, 2026.

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