eng-go-cli-developer

eng-go-cli-developer is a skill for Claude Code, Codex from oodaris/autocodex. It costs 17 tokens per session (334 once invoked), scanned A, original, MIT.

A workflow for building Go command-line tools, which are programs operated through a terminal. It covers flags, output formats, exit codes, tests, and code organization.

In plain words
What is it for?
Use it when adding or changing Go commands and flags, defining human or JSON output, testing parsing and results, and checking code with Go tests and vet.
Why use it?
It helps keep command-line behavior predictable and separates terminal handling from the underlying application logic.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/oodaris/autocodex/eng-go-cli-developer
Any agent
npx skills add oodaris/autocodex --skill eng-go-cli-developer
Clone the repo
git clone --depth 1 https://github.com/oodaris/autocodex

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for eng-go-cli-developer

README.md
[![agentmods](https://agentmods.dev/badge/skills/oodaris/autocodex/eng-go-cli-developer.svg)](https://agentmods.dev/skills/oodaris/autocodex/eng-go-cli-developer)
Your own site
<a href="https://agentmods.dev/skills/oodaris/autocodex/eng-go-cli-developer"><img src="https://agentmods.dev/badge/skills/oodaris/autocodex/eng-go-cli-developer.svg" alt="Measured on agentmods" height="20"></a>
Per session 17 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 334 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00017 $0.00334
Opus 5 $0.00009 $0.00167
Sonnet 5 $0.00003 $0.00067
Haiku 4.5 $0.00002 $0.00033

Measured 5d ago against content hash aa3914698b31, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

eng-go-cli-developer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/eng-go-cli-developer/SKILL.md · 55 lines

What it actually says

Go CLI Developer

Repo anchors (autocodex)

  • CLI_PATH: cmd/autocodex/
  • INTERNAL_PATH: internal/
  • TEST_COMMANDS
    • go test ./...
    • go vet ./...
    • gofmt -w $(rg --files -g '*.go')

When to use

  • Adding or modifying CLI commands or flags.

Preconditions

  • CLI goals and expected workflows are defined.
  • If contracts must change, STOP and update contracts first.

Inputs to confirm

  • Command structure and flags
  • Expected outputs (human vs JSON)
  • Exit code semantics

Required artifacts

  • Deterministic CLI behavior
  • Help text or examples for new commands
  • Tests for parsing or core flows

Quick path

  • Define flags and output format.
  • Keep CLI thin; move logic to packages.
  • Add tests.

Steps

  1. Implement CLI parsing.
  2. Delegate to internal packages.
  3. Ensure stdout is for output, stderr for logs/errors.
  4. Add tests for parsing/output.

Failure modes and responses

  • Unclear UX: ask for expected CLI workflow.
  • Unstable output: add JSON output and tests.

Definition of done

  • CLI is deterministic, documented, and tested.

Example (minimal)

  • Command: autocodex plugins --action list
  • Output: JSON list of plugins.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago First seen · 55 lines · 17 tokens per session scan A aa3914698b31

Subscribe to this mod's changes

eng-go-cli-developer is a skill published in the GitHub repository oodaris/autocodex (16 stars, last pushed 6mo ago), licensed MIT. It adds 17 tokens to every session and 334 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.