Agent skill

Build Runner

by brim-borium in brim-borium/spotify_sdk

Generate Dart JSON models and .g.dart files using buildrunner.

Apache-2.0Auto-check passedMobile

Install Build Runner

skills CLI
$ npx skills add brim-borium/spotify_sdk --skill build-runner -a claude-code

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

GitHub CLI
$ gh skill install brim-borium/spotify_sdk build-runner --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/brim-borium/spotify_sdk.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/build-runner .claude/skills/build-runner && 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
build-runner
GitHub stars
166
Token cost
~195 tokens
SKILL.md length
56 words
Files
1
Skills in repo
9
Repo updated
First seen
Licence
Apache-2.0

At a glance

Generate Dart JSON models and .g.dart files using buildrunner.

  • Mobile work in your project
  • SKILL.md covers Invocation and Rules
  • Calls flutter

What it does

Build Runner is an agent skill from brim-borium/spotify_sdk. Generate Dart JSON models and .g.dart files using buildrunner.

Its SKILL.md is about 200 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 Mobile. It works with Dart and Spotify. The repository describes itself as: Flutter Package to connect the spotify sdk. The licence is Apache-2.0.

When your agent uses it

  • Mobile work in your project

Example prompts

  • “/build-runner”

What it can do on your machine

Read from SKILL.md and the folder at commit 2622fc0. 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:

    • flutter

    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

Build Runner loads about 195 tokens when it runs. Until then it costs about 19 tokens; SKILL.md has 56 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~19
When it runs · the whole SKILL.md, loaded when a task matches
~195

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 brim-borium/spotify_sdk at commit 2622fc0, republished under its Apache-2.0 licence (© brim-borium). 56 words, ~195 tokens.

Download SKILL.mdSave it as .claude/skills/build-runner/SKILL.md (or your agent's skills folder).
name
build-runner
description
Generate Dart JSON models and *.g.dart files using build_runner.

Build Runner (build-runner)

Run build_runner to generate serialization models in packages/spotify_sdk_platform_interface/lib/models/.

Invocation

Run from repo root:

bash
flutter pub run build_runner build --delete-conflicting-outputs

[!NOTE] Pass --delete-conflicting-outputs to replace stale generated code automatically.

Rules

  • Auto-generate *.g.dart files via build_runner (do not edit .g.dart manually).
  • Ensure model files carry matching part directives (e.g. part 'track.g.dart';).
  • Annotate fields with @JsonKey(name: 'snake_case') for Spotify SDK JSON payloads.

© brim-borium, Apache-2.0. 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/build-runner of brim-borium/spotify_sdk.

Open the folder on GitHubat commit 2622fc0

Compare with similar skills

Build Runner 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.

Build Runner compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Build Runner this skillbrim-borium/spotify_sdk166—~195Automated safety check: PassApache-2.0
Fjson Dart Bean GeneratorK3vinb5/unyo-app662—~2.2kAutomated safety check: PassBSD-3-Clause
Squadron Marshalingd-markey/squadron138—~2.6kAutomated safety check: PassMIT
Flutter Riverpod State Managementandrewyng/context-hub14k—~1.1kAutomated safety check: PassMIT
Android UI AutomationOpenMinis/MinisSkills444—~1.6kAutomated safety check: PassMIT
AndroidCodename-11/hermes-relay314—~4.9kAutomated safety check: PassMIT

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  • Platform Sync

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Works with

Categories

Questions about Build Runner

What does Build Runner do?

Generate Dart JSON models and .g.dart files using buildrunner. Build Runner is an agent skill from brim-borium/spotify_sdk.dart files using buildrunner.

When should I use Build Runner?

Build Runner fits situations like: mobile work in your project.

How do I install Build Runner in Claude Code?

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

How do I install Build Runner in Codex?

Run `npx skills add brim-borium/spotify_sdk --skill build-runner -a codex`. Or copy the skill folder (.agents/skills/build-runner in brim-borium/spotify_sdk) into .agents/skills/build-runner in your project. Codex loads it when a task matches its description.

Can I use Build Runner 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 brim-borium/spotify_sdk --skill build-runner -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/build-runner, .gemini/skills/build-runner, .github/skills/build-runner and .opencode/skills/build-runner in your project.

What does Build Runner need to run?

Going by SKILL.md and its folder, Build Runner needs the command-line tools its instructions call (flutter).

Does Build Runner 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 Build Runner 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 Build Runner use?

Build Runner is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Build Runner use?

About 195 tokens (SKILL.md is roughly 780 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 Build Runner?

Skills that share tags, products or a category with Build Runner: Fjson Dart Bean Generator (K3vinb5/unyo-app, 662 stars), Squadron Marshaling (d-markey/squadron, 138 stars), Flutter Riverpod State Management (andrewyng/context-hub, 14k stars) and Android UI Automation (OpenMinis/MinisSkills, 444 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Build Runner?

brim-borium (a GitHub user) maintains it in brim-borium/spotify_sdk, which has 166 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 6, 2026.

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