proofread-subtitles

proofread-subtitles is a skill for Claude Code from yegor256/critic. It costs 34 tokens per session (505 once invoked), scanned A, original, MIT.

A proofreading procedure for subtitle files in SRT format, commonly used to store video captions with timestamps. It reviews subtitles produced by Whisper or another speech-to-text system.

In plain words
What is it for?
Use it to correct punctuation, capitalization, spacing, homophones, technical terms, and line lengths in SRT subtitles.
Why use it?
It fixes likely transcription mistakes and readability problems while preserving cue numbers, timestamps, and boundaries. It also flags uncertain corrections instead of guessing.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the critic plugin — 4 skills shipped together

Good fit Use it to correct punctuation, capitalization, spacing, homophones, technical terms, and line lengths in SRT subtitles.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/yegor256/critic/proofread-subtitles
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.

Any agent
npx skills add yegor256/critic --skill proofread-subtitles
Clone the repo
git clone --depth 1 https://github.com/yegor256/critic

Made for: Claude Code.

Or install critic, the plugin that ships this one along with the rest of its 4 skills.

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 proofread-subtitles

README.md
[![agentmods](https://agentmods.dev/badge/skills/yegor256/critic/proofread-subtitles/github.svg)](https://agentmods.dev/skills/yegor256/critic/proofread-subtitles)
Your own site
<a href="https://agentmods.dev/skills/yegor256/critic/proofread-subtitles"><img src="https://agentmods.dev/badge/skills/yegor256/critic/proofread-subtitles/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for proofread-subtitles

Your own site · 80×15
<a href="https://agentmods.dev/skills/yegor256/critic/proofread-subtitles"><img src="https://agentmods.dev/badge/skills/yegor256/critic/proofread-subtitles.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 505 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00034 $0.00505
Opus 5 $0.00017 $0.00253
Sonnet 5 $0.00007 $0.00101
Haiku 4.5 $0.00003 $0.00051

Measured 10d ago against content hash ed00b7e6c34e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

proofread-subtitles 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 10d 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/proofread-subtitles/SKILL.md · 84 lines

How it starts

The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Reference

Ask author for domain-specific terms engine likely misrenders. Use that list as primary reference for errors. Proceed without list when author declines. Flag uncertain cues by number instead.

Structure

Keep timestamps, cue numbers, and blank line between cues unchanged. Keep each cue's boundaries exactly as in source. Break any line over 42 characters into two within same cue. Split at clause boundary, comma, or conjunction. Allow at most two text lines per cue. Shorten wording rather than add third line.

Punctuation

Add punctuation where spoken phrasing requires it. Follow source language's rules. Capitalize first word of every sentence and every proper noun. End every sentence with terminal mark.

Corrections

Fix obvious homophone and word misrecognitions when context is unambiguous. Preserve computer jargon in its conventional form. Use API, CLI, Git, Docker, JSON, HTTP, and Kubernetes as written. Fix typos and spacing errors without rewording sentence.

Russian

In Russian subtitles, write computer terms in English. Follow conventions of Russian tech speech. Write pull request instead of пулл реквест. Keep transliterations already standard in Russian.

Preserve

Preserve speaker's word choice and phrasing. Keep filler words like uh, um, well, ну, and вот. Delete them only when author requests filler-free transcript. Omit speaker labels and sound descriptions. Add bracketed annotations only where source already uses them. Preserve file's existing encoding and line endings.

Uncertain

Leave original when unsure change preserves meaning. Flag cue number instead.

Output

Write output to sibling file <original>-corrected.srt. Keep source file intact. Verify cue count matches source. Verify every cue number and timestamp matches too. Report short categorized summary of changes at end.

Example

Correct this raw cue.

1
00:00:01,000 --> 00:00:03,000
lets push this to git hub tomorrow

Read the full file on GitHub · 84 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. 10d ago First seen · 84 lines · 34 tokens per session scan A ed00b7e6c34e

Subscribe to this mod's changes

proofread-subtitles is a skill published in the GitHub repository yegor256/critic (4 stars, last pushed 4d ago), licensed MIT. It adds 34 tokens to every session and 505 once invoked, about $0.0002 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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