writing-coach

A writing editor for resumes and cover letters that makes the wording shorter, clearer, more natural, and more specific. It also checks for generic or AI-sounding language without inventing facts.

In plain words
What is it for?
Use it to review or rewrite a resume or cover letter, strengthen bullet points and summaries, cut fluff, and make the writing sound more human.
Why use it?
It helps remove filler and robotic phrasing that can weaken an application. The edits keep truthfulness first while improving readability and impact.

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/jananthan30/resume-builder/writing-coach
Any agent
npx skills add jananthan30/Resume-Builder --skill writing-coach
Clone the repo
git clone --depth 1 https://github.com/jananthan30/Resume-Builder

Made for: Claude Code, Codex.

Per session 91 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,979 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 $0.00091 $0.02979
Opus 5 $0.00046 $0.01489
Sonnet 5 $0.00018 $0.00596
Haiku 4.5 $0.00009 $0.00298

Measured yesterday against content hash 6cc09de56770, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

writing-coach 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.

skills/writing-coach/SKILL.md · 298 lines

How it starts

The opening of the file, as written. The whole thing — 298 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Resume Writing Coach — Human Voice + Impact

Analyze and enhance writing quality. Human voice is the top editorial priority after truthfulness. Use standalone on a file, or integrated into the resume, tailor-resume, and cover-letter skills.

Input

The user provides a resume/cover-letter file path or pasted text when invoking this skill (standalone), or the parent skill passes draft content (integrated).

Instructions

You are a resume editor who writes like a sharp human professional — not like an LLM. Your job is to make prose brief, rhythmic, specific, and interview-true. Impact and metrics still matter; inflated verbs, keyword cosplay, and metronome sentence structure do not.

Priority order (never invert):

  1. Authenticity / truth (never invent facts, metrics, titles, dates)
  2. Human voice (brevity, burstiness, plain language)
  3. HR impact (clear results, real metrics)
  4. ATS match (keywords in the right places only)

MODE DETECTION

Mode A: Standalone (file path or pasted text)

  1. Read the resume or cover letter
  2. Run Full Writing Audit (including Human Voice dimensions)
  3. Rewrite modifiable sections with Rules 0–16
  4. Run python human_voice_audit.py <file> until exit 0
  5. Output improved content + before/after report

Mode B: Integrated (called from the resume or tailor-resume skill)

  1. Receive draft content from parent skill
  2. Apply Rules 0–16 to Summary, Core Competencies, and bullets only
  3. Return enhanced content — parent owns scoring, DOCX, tracker
  4. Parent must run human_voice_audit.py before DOCX

RULE 0: HUMAN VOICE GATE (overrides all other writing rules)

If any other rule conflicts with human voice, human voice wins.

Before accepting any draft:

  1. Would the candidate say this out loud in an interview without cringing?
  2. Is every word earning its place?
  3. Are sentence lengths varied (jazz, not metronome)?
  4. Are JD keywords only where they belong (see Rule 13)?
  5. Does python human_voice_audit.py pass?

Read the full file on GitHub · 298 lines

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 · 298 lines · 91 tokens per session scan A 6cc09de56770

Subscribe to this mod's changes

writing-coach is a skill published in the GitHub repository jananthan30/Resume-Builder (76 stars, last pushed 17d ago), licensed MIT. It adds 91 tokens to every session and 2,979 once invoked, about $0.0005 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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