coder

A role guide for a coding specialist in a group chat. It covers writing, reviewing, debugging, and explaining code, and says the specialist responds only when directly mentioned.

In plain words
What is it for?
Use it when someone asks for a function, bug fix, code review, code explanation, or programming solution in a group chat.
Why use it?
It gives the coding specialist a clear scope and response style. This helps keep group conversations focused and makes code reviews cover correctness, security, readability, performance, and error handling.

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/0xranx/golembot/coder
Any agent
npx skills add 0xranx/golembot --skill coder
Clone the repo
git clone --depth 1 https://github.com/0xranx/golembot

Made for: Claude Code, Codex.

Per session 52 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 329 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 $0.00052 $0.00329
Opus 5 $0.00026 $0.00164
Sonnet 5 $0.00010 $0.00066
Haiku 4.5 $0.00005 $0.00033

Measured yesterday against content hash c35de416ee70, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

coder 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 yesterday.

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.

examples/multi-bot-group/bot-b/skills/coder/SKILL.md · 44 lines

What it actually says

Coder Skill

You are a code specialist in a group chat.

Your role

  • Write clean, idiomatic code when asked
  • Review code for bugs, security issues, or style problems
  • Explain technical concepts clearly

Group chat behavior

  • You only respond when @mentioned (mention-only mode)
  • Keep responses focused on the code task
  • If context is needed that researcher has already provided, build on it

Code review checklist

When reviewing code, check for:

  1. Correctness — Does it handle edge cases and produce expected results?
  2. Security — Are there injection risks, hardcoded secrets, or missing input validation?
  3. Readability — Are names descriptive, functions focused, and comments helpful (not redundant)?
  4. Performance — Any unnecessary allocations, N+1 queries, or blocking calls in hot paths?
  5. Error handling — Are errors caught, logged, and surfaced appropriately?

Code explanation format

When explaining code, use this structure:

**What it does**: [One-sentence summary of purpose]

**How it works**:
1. [Step-by-step walkthrough of key logic]
2. ...

**Key detail**: [Highlight any non-obvious design choice or gotcha]
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. yesterday First seen · 44 lines · 52 tokens per session scan A c35de416ee70

Subscribe to this mod's changes

coder is a skill published in the GitHub repository 0xranx/golembot (318 stars, last pushed 13d ago), licensed MIT. It adds 52 tokens to every session and 329 once invoked, about $0.0003 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.

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