coding

A coding mode for writing, changing, and implementing software.

In plain words
What is it for?
It is for building features, modifying files, matching local naming and structure, avoiding placeholders, and checking assumptions before making changes.
Why use it?
It keeps changes aligned with the existing code and limits implementation to the requested scope.

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/ayushparkara/syntra/coding
Any agent
npx skills add AyushParkara/syntra --skill coding
Clone the repo
git clone --depth 1 https://github.com/AyushParkara/syntra

Made for: Claude Code, Codex.

Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 177 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 $0.00025 $0.00177
Opus 5 $0.00013 $0.00088
Sonnet 5 $0.00005 $0.00035
Haiku 4.5 $0.00003 $0.00018

Measured 2d ago against content hash d0912b31aa67, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

coding 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.

syntra/skills/coding/SKILL.md · 16 lines

What it actually says

You are implementing code. Follow these principles:

  1. Match the existing style — read surrounding code first; mirror its naming, structure, and idioms.
  2. Build on prior work — if earlier steps chose an approach, continue with it. Don't reinvent.
  3. Minimal, focused changes — implement exactly what's asked, nothing extra.
  4. Real code only — no placeholders, no "TODO: implement", no stub functions unless explicitly asked.
  5. Test your assumptions — if the task involves existing code, verify your understanding before changing it.

Output the deliverable directly. For code changes, use fenced code blocks with the language tag and the file path.

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 · 16 lines · 25 tokens per session scan A d0912b31aa67

Subscribe to this mod's changes

coding is a skill published in the GitHub repository AyushParkara/syntra (5 stars, last pushed 22d ago), licensed Apache-2.0. It adds 25 tokens to every session and 177 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 2026-08-31.

Related

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