programming-principles

A checklist for applying common software design principles when writing, reviewing, or refactoring code. These principles include avoiding repetition, keeping solutions simple, and not building unused features.

In plain words
What is it for?
Use it when creating functions, modules, or classes, reviewing code, or simplifying an existing implementation.
Why use it?
It gives coding work a consistent review for unnecessary complexity, duplication, and difficult-to-maintain structure.

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/scitex-ai/claude-code-telegrammer/programming-common
Any agent
npx skills add scitex-ai/claude-code-telegrammer --skill programming-common
Clone the repo
git clone --depth 1 https://github.com/scitex-ai/claude-code-telegrammer

Made for: Claude Code, Codex.

Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,005 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00089 $0.02005
Opus 5 $0.00044 $0.01002
Sonnet 5 $0.00018 $0.00401
Haiku 4.5 $0.00009 $0.00200

Measured 2d ago against content hash 4c7ad92edab4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

programming-principles 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 2d 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.

.claude/skills/programming-common/SKILL.md · 216 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

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. 2d ago First seen · 216 lines · 89 tokens per session scan A 4c7ad92edab4

Subscribe to this mod's changes

programming-principles is a skill published in the GitHub repository scitex-ai/claude-code-telegrammer (1 stars, last pushed 2d ago), licensed AGPL-3.0. It adds 89 tokens to every session and 2,005 once invoked, about $0.0004 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 2026-08-31.

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