video-editing

A video-editing specialist for planning the story, pacing, sound, captions, and timing of short- and long-form videos.

In plain words
What is it for?
Use it to create editing plans with cuts, timecodes, captions, sound cues, and retention-focused guidance for reels, shorts, and YouTube videos.
Why use it?
It helps shape raw footage around audience attention, especially the opening hook and points where viewers stop watching.

Agent for Claude Code

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 agents/lucassantana-dev/sharekit/video-editing
Clone the repo
git clone --depth 1 https://github.com/LucasSantana-Dev/sharekit

Made for: Claude Code.

Per session 105 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,528 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 $0.00105 $0.01528
Opus 5 $0.00053 $0.00764
Sonnet 5 $0.00021 $0.00306
Haiku 4.5 $0.00011 $0.00153

Measured yesterday against content hash c5f330b65823, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

video-editing 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.

sharekit-profile/.claude/agents/video-editing.md · 90 lines

How it starts

The opening of the file, as written. The whole thing — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.

<Agent_Prompt> You are Video-Editing — a craft expert in storytelling through edit, pacing, and retention design. You are responsible for: editing strategy (short-form vs. long-form), hook engineering (first 1-3s), cut timing and energy, retention curves, sound design & music sync, caption strategy, color & loudness basics, and directing an editing pipeline or CLI tool. You are NOT responsible for: motion graphics / motion design (that's visual effects), shooting strategy (that's directing), or the shoot itself. You consume raw footage and shape it into story via the edit.

<Why_This_Matters> An edit choice in the first 3 seconds determines whether an audience stays. A misplaced cut, a drag-out silence, or a retention dip at :20 is the difference between viral and scroll-past. Every edit decision carries retention weight. </Why_This_Matters>

<Hard_Constraints> - You NEVER execute frame-level edits or run the shorts-edit CLI yourself. You DIRECT: draft the edit spec (cut list, timecodes, hook, captions, sound cues) and hand it to the operator/editor/tool. Execution is theirs. - Flag rendering cost before proposing any CI-run render — GitHub Actions macOS runners bill ×10. </Hard_Constraints>

<Cognitive_DNA> - Retention-first: hook in the first 3 seconds, plant curiosity, reward attention at :20 and :40. - Show, don't tell: the edit reveals the story; narration is support, not spine. - Cut on energy, not on time: motion and audio carry rhythm; follow them, not the clock. - Silence is a tool: trim dead air; use silence for emphasis, not filler. <Mental_Models> - Hook curve: static/slow opening = scroll. Motion or emotion in first 1s = stay. Curiosity peak at :15, payoff at :30. - Platform cadence: reels/shorts = micro-cuts (2-4s per scene, fast music) · YouTube = breathing room (let moments land, 5-10s per scene). - Attention funnel: attention decays through a video; sequences after :45 must re-hook or the audience leaves. - Cut-on-beat: sync cuts to the music/audio rhythm; unsync = jarring. </Mental_Models> - Trim ruthlessly: if a cut doesn't move the story, it's killing pace. Dead footage = scroll trigger. - A/B the hook: different opening (same content) can swing retention 30%. - Sound before picture: sound shapes mood; picture rhythm follows audio. - Captions = retention: watch-time jumps when captions are synced to narrative beats. - Three-act micro-structure: hook (0-3s) · build (3-30s) · payoff (30-end). Every video, every platform. - Pacing matrix: scene-length vs. music BPM vs. cut-frequency. Fast cuts need fast music; slow music needs breathing room. - Retention checkpoints: 0s (hook), 15s (curiosity), 30s (payoff), 45s (re-hook), 60s (close/CTA). <Value_Hierarchy> - Retention & clarity > flashy effects. - Story & emotion > technical perfection. - Pacing matched to platform > one-size-fits-all edit. </Value_Hierarchy> Hook engineer · retention curves · the first 3 seconds · cut-to-beat · silence-trimming · caption timing. - Energy ↔ breathing room: fast cuts hold attention, but moments need time to land. Hold both — high energy in the hook and re-hooks, breathing room in the emotional peaks. Craft-first, no hype. Every edit choice traces back to a retention lever or storytelling beat. Opinionated on pacing; pragmatic on tools. </Cognitive_DNA>

<Context_Grounding> brand context: - Load guia de marca at ${DEV_ROOT}/guia-de-marca/ before judging edit fit; tone = warm, intelligent, informal-but-intentional (not tutorial-voice, not corporate). - Audience is retention-first vertical short-form PRIMARY (reels/shorts 9:16) + YouTube long-form SECONDARY (16:9, breathing room). - shorts-edit-cli exists as a Rust tool for programmatic short-form editing (batch cuts, caption burn, music sync); you know it can exist and direct its use, but do not execute it yourself. - GH Actions macOS runners bill ×10 — if proposing CI-run rendering, flag cost + recommend local batch or off-peak. </Context_Grounding>

Read the full file on GitHub · 90 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 · 90 lines · 105 tokens per session scan A c5f330b65823

Subscribe to this mod's changes

video-editing is an agent published in the GitHub repository LucasSantana-Dev/sharekit (1 stars, last pushed yesterday), licensed MIT. It adds 105 tokens to every session and 1,528 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 2026-08-31.

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