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Go Cobra Applications · hashgraph-online | DecimalAI

codingby hashgraph-online

Go Cobra Applications

hashgraph-online/go-cobra-applications

Source hashgraph-online/awesome-codex-plugins ↗License Apache-2.0

Build, refactor, test, and review Cobra-based Go applications with intentional command trees, fresh constructors, suggestions, typed boundaries, scoped flags, local or remote configuration, explicit precedence, safe live reload, context propagation, stable streams, shell completion, and generated documentation.

SkillScore100Maintained

Automatic

Coding pack

Last verified 8/16/2026

What it changes

Passed 22 of 22 test cases with the skill, and 21 of 22 without it.

Without skill95%

With skill100%

Checks it passed that the model alone missed

The subcommands and flags are registered inside constructor functions rather than in init() functions.
The root command and subcommands are created using constructor functions instead of package-level variables.
The flags, environment variables, and config file values are parsed into a single validated Go configuration struct.

1 fixed21 passed either way0 still failing0 broke

Pass-rate lift: +5 pp
Tokens: +19%
Agent turns: 0%
Response time: -8%

Model gemini-3.6-flashMeasured 8/16/2026v122 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/hashgraph-online-go-cobra-applications/SKILL.md https://app.decimal.ai/s/hashgraph-online-go-cobra-applications/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add hashgraph-online-go-cobra-applications, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/hashgraph-online-go-cobra-applications/ and pins it in .decimal/skills.lock

decimalai skills add hashgraph-online-go-cobra-applications

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/hashgraph-online-go-cobra-applications/SKILL.md https://app.decimal.ai/s/hashgraph-online-go-cobra-applications/SKILL.md

Raw file: /s/hashgraph-online-go-cobra-applications/SKILL.md ↗ · machine-readable summary at /s/hashgraph-online-go-cobra-applications.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

A test case the skill fixed. Same model, same prompt, with and without the skill.

Prompt

I need to write a Go CLI application using Cobra for managing database migrations. Please write the scaffolding code for the root and subcommands (up, down, status), demonstrating how CLI arguments, flags, and environment variables should be resolved into a typed configuration struct for execution.

What was checked, without and with the skill
Checked	Without skill	With skill
The root command and subcommands are created using constructor functions instead of package-level variables.	Missed	Passed
The subcommands and flags are registered inside constructor functions rather than in init() functions.	Missed	Passed
The flags, environment variables, and config file values are parsed into a single validated Go configuration struct.	Missed	Passed

case-01 · gemini-3.6-flash · 8/16/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md54 linessingle file

Go Cobra Applications

Keep Cobra and Viper at the application edge. Construct a fresh command tree per execution and translate CLI state into typed application calls.

Core Workflow

Model the tree around user resources, workflows, and operations.
Define invocation contracts, argument validation, examples, and flag scope.
Construct fresh root and subcommands with explicit dependencies and streams.
Keep handlers thin, propagate context, and return errors.
Resolve defaults, config, environment, and flags into a validated typed config.
Test parsing, inheritance, precedence, help, errors, and repeated execution.
Generate completion and documentation from the same runtime tree.

Task	Load
Build or restructure a Cobra application	`guidelines.md`, `workflows/build-cobra-command-tree.md`
Apply command-tree, flag, config, and testing rules	`references/cobra-applications/rules.md`
Use constructors and focused implementation examples	`references/cobra-applications/examples.md`
Inject services or resolve configuration	`references/cobra-applications/patterns.md`
Review a Cobra/Viper application	`references/cobra-applications/checklist.md`
Understand architecture, completion, and docs	`references/cobra-applications/knowledge.md`

Guardrails

Avoid mutable package-global commands and init-driven application wiring.
Domain packages must not import Cobra or Viper.
Use persistent flags only when descendants genuinely share the option.
Treat configuration as validated runtime policy, not mutable application storage.
Validate reload candidates and atomically publish only last-known-good state.
Show usage for syntax errors, not routine operational failures.
Verify generator, completion, docs, and configuration APIs against pinned versions.

Source Notes

Guidance is transformed and paraphrased from Ricardo Gerardi, Powerful Command-Line Applications in Go (Pragmatic Bookshelf, 2021),

Track record

Benchmark

22 / 22

test cases passed, vs 21 / 22 without

Adoption

Users: 1
Times used: 21

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

hashgraph-online / awesome-codex-plugins

plugins/LVTD-LLC/skills/skills/go-cobra-applications/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

hashgraph-online/go-cli-application-architectureDesign and review maintainable Go CLI application boundaries, package layout, dependency direction, command factories, configuration ownership, adapters, services, storage, and composition roots. Use when starting a multi-command CLI, extracting business logic from Cobra, untangling globals, adding external dependencies, or deciding what belongs under cmd, internal, or reusable packages.Close match+14 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Go Cobra Applications

Core Workflow

Read Next

Guardrails

Source Notes

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

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