Agent skill

Shot Composer Blockout

by benjiyaya in benjiyaya/Calliope

A skill your agent uses when the user asks to build, pose, frame, or ANIMATE a 3D scene in Build Scene — characters, primitives, shot framing, keyframe motion, or exporting a blockout as a…

MITAuto-check passedGame Development

Install Shot Composer Blockout

skills CLI
$ npx skills add benjiyaya/Calliope --skill shot-composer-blockout -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install benjiyaya/Calliope shot-composer-blockout --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/benjiyaya/Calliope.git skills-src && mkdir -p .claude/skills && cp -r skills-src/calliope-backend/skills_builtin/shot-composer-blockout .claude/skills/shot-composer-blockout && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
shot-composer-blockout
GitHub stars
242
Token cost
~1.1k tokens
SKILL.md length
522 words
Files
2 (incl. references)
Skills in repo
5
Repo updated
First seen
Licence
MIT

At a glance

A skill your agent uses when the user asks to build, pose, frame, or ANIMATE a 3D scene in Build Scene — characters, primitives, shot framing, keyframe motion, or exporting a blockout as a…

  • Works in 5 steps: get_scene — see what's there. → Build: add_object, set_transform… → Frame: select_object the subject →… → …
  • The user asks to build
  • SKILL.md covers Overview, Scene model, Preferred workflow and Motion rules (read before…, plus 2 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Shot Composer Blockout is an agent skill from benjiyaya/Calliope. Use when the user asks to build, pose, frame, or ANIMATE a 3D scene in Build Scene — characters, primitives, shot framing, keyframe motion, or exporting a blockout as a generation reference.

Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/motion-recipes.md`).

It sits in Game Development, covering 3D graphics and WebGL. It works with ComfyUI and SvelteKit. The repository describes itself as: Local-first AI Idea-to-video studio — FastAPI + SvelteKit + ComfyUI. The licence is MIT.

When your agent uses it

  • The user asks to build
  • ANIMATE a 3D scene in Build Scene — characters
  • Keyframe motion
  • Exporting a blockout as a generation reference

Example prompts

  • “/shot-composer-blockout”

Workflow steps

5 steps, taken from the first numbered list in SKILL.md.

  1. get_scene — see what's there.
  2. Build: add_object, set_transform ([x,y,z], y-up, characters stand on
  3. Frame: select_object the subject → set_shot (montage via
  4. Animate: stage → add_keyframe → stage → add_keyframe (see
  5. request_capture when the user wants the frame as a generation reference.

What it can do on your machine

Read from SKILL.md and the folder at commit 0a75919. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Shot Composer Blockout loads about 1.1k tokens when it runs, and up to ~2.4k if it reads all its reference files. Until then it costs about 53 tokens; SKILL.md has 522 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~53
When it runs · the whole SKILL.md, loaded when a task matches
~1.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~2.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from benjiyaya/Calliope at commit 0a75919, republished under its MIT licence (© benjiyaya). 522 words, ~1,058 tokens.

Download SKILL.mdSave it as .claude/skills/shot-composer-blockout/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
shot-composer-blockout
description
Use when the user asks to build, pose, frame, or ANIMATE a 3D scene in Build Scene — characters, primitives, shot framing, keyframe motion, or exporting a blockout as a generation reference.
version
1.0.2
license
MIT
metadata.author
Calliope
metadata.tags
build-scene, 3d, blockout, keyframes, camera, controlnet

Shot Composer Blockout

Overview

Judgment layer for driving the Build Scene composition through the shot_* tools. The machine contract lives in the tools themselves; this skill is the workflow — how to think about the scene, and in what order to touch it. Adapted from open-media's agent guide, with motion-recipe judgment folded in.

Scene model

  • The scene is a flat list of objects: characters (male/female/child), primitives (cube, plane, cylinder, sphere, capsule, cone, torus). get_scene first, always — it's cheap and tells you what exists, what's selected, playback state, and every keyframe id.
  • Objects are addressed by id from get_scene/add_object — never invent ids. select_object is for pointing the user's UI at the subject (and set_shot solves from it); edits themselves always pass explicit ids.
  • Posture is opaque ({version, data:[...]}, fixed-arity arrays). Never hand-construct it — pose via list_poses + apply_pose, then fine-tune single joints with set_joint.
  • Framing (shotSize/angle/elevation/composition) is scene-global, not per-object. set_shot merges partial updates. OTS needs a second character.

Preferred workflow

  1. get_scene — see what's there.
  2. Build: add_object, set_transform ([x,y,z], y-up, characters stand on y=0), apply_pose for stances.
  3. Frame: select_object the subject → set_shot (montage via list_shot_presets when unsure of valid ids).
  4. Animate: stage → add_keyframe → stage → add_keyframe (see references/motion-recipes.md — read it before any non-trivial motion).
  5. request_capture when the user wants the frame as a generation reference. It returns the saved PNG path — no GPU, no approval.

Motion rules (read before keyframing)

  • Stage, then commit. set_transform/set_joint write the object's live state; add_keyframe(object_id, time) pins that state at a second (0-60). An object with no track gets a spawn keyframe at t=0 automatically.
  • Never call add_keyframe twice with the same time for different poses — within 1/24s it REPLACES (upsert). Move it with move_keyframe_time instead.
  • Respect the track. Once a track exists, set_transform only stages — it does NOT rewrite committed keyframes. To change the pose AT a keyframe, edit with update_keyframe, not set_transform.
  • Duration ≤ 60s. set_playback(duration) caps there; keep keyframe times within the duration. Preview loops.
Show full SKILL.md (199 more words)Show less

Camera, gates, and export

Build Scene has a single surface: the Three.js viewport. It is the only preview and the only export/capture source — there is no separate render path and no Remotion.

  • Camera framing is the user's job. The viewport camera is keyed from the TimelineStrip (◉). Do not drive the camera from shot_* tools, and do not invent camera-beat tools — none exist.
  • Object motion is your job. Stage → add_keyframe recipes animate objects; that motion is what the exported clip renders (the viewport samples every tracked object at the playhead, so object keyframes appear in the export even with a static camera).
  • Brief/Cut gates. Before mutating, ask_user the Brief; before export, ask_user the Cut and record_build_scene_gate(gate='cut'). Soft maybe = hard stop. The user clicks Export video — there is no export_video tool.
  • ComfyUI / workflows only when the user explicitly asks image/video gen, or for stills that need Comfy after Capture — never as part of the Build Scene loop.

When a capability seems missing

Don't work around a gap by inventing behavior (no hand-rolled posture arrays, no invented tool names). Check get_scene output first; if a capability truly doesn't exist as a tool, say so — it's an app-feature gap, not a prompting problem.

© benjiyaya, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file (references) in calliope-backend/skills_builtin/shot-composer-blockout of benjiyaya/Calliope.

  • SKILL.md
  • references/motion-recipes.md

Open the folder on GitHubat commit 0a75919

Compare with similar skills

Shot Composer Blockout next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Shot Composer Blockout compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Shot Composer Blockout this skillbenjiyaya/Calliope242—~1.1kAutomated safety check: PassMIT
Comfyui Topology Vizautomateyournetwork/netclaw676—~3.9kAutomated safety check: NotesApache-2.0
Image to Three.js Modelimg2threejs/img2threejs18k1 repos~8.2kAutomated safety check: PassApache-2.0
Web CloneJane-xiaoer/claude-skill-web-clone1k1 repos~2.7kAutomated safety check: PassMIT
Threejs Game Directormajidmanzarpour/threejs-game-skills2.5k—~2.2kAutomated safety check: PassMIT
Game Asset Generatorhtdt/godogen7.1k—~2.8kAutomated safety check: PassMIT

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Questions about Shot Composer Blockout

What does Shot Composer Blockout do?

A skill your agent uses when the user asks to build, pose, frame, or ANIMATE a 3D scene in Build Scene — characters, primitives, shot framing, keyframe motion, or exporting a blockout as a…. Shot Composer Blockout is an agent skill from benjiyaya/Calliope. Use when the user asks to build, pose, frame, or ANIMATE a 3D scene in Build Scene — characters, primitives, shot framing, keyframe motion, or exporting a blockout as a generation reference.

When should I use Shot Composer Blockout?

Shot Composer Blockout fits situations like: the user asks to build; ANIMATE a 3D scene in Build Scene — characters; keyframe motion; exporting a blockout as a generation reference.

How do I install Shot Composer Blockout in Claude Code?

Run `npx skills add benjiyaya/Calliope --skill shot-composer-blockout -a claude-code`. Or copy the skill folder (calliope-backend/skills_builtin/shot-composer-blockout in benjiyaya/Calliope) into .claude/skills/shot-composer-blockout in your project. Claude Code loads it when a task matches its description.

How do I install Shot Composer Blockout in Codex?

Run `npx skills add benjiyaya/Calliope --skill shot-composer-blockout -a codex`. Or copy the skill folder (calliope-backend/skills_builtin/shot-composer-blockout in benjiyaya/Calliope) into .agents/skills/shot-composer-blockout in your project. Codex loads it when a task matches its description.

Can I use Shot Composer Blockout in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add benjiyaya/Calliope --skill shot-composer-blockout -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/shot-composer-blockout, .gemini/skills/shot-composer-blockout, .github/skills/shot-composer-blockout and .opencode/skills/shot-composer-blockout in your project.

What does Shot Composer Blockout need to run?

SKILL.md names no scripts, command-line tools or credentials: Shot Composer Blockout is instructions for the agent only.

Does Shot Composer Blockout access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Shot Composer Blockout safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Shot Composer Blockout use?

Shot Composer Blockout is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Shot Composer Blockout use?

About 1.1k tokens (SKILL.md is roughly 4.2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.4k tokens, read only when the agent opens those files.

What are the alternatives to Shot Composer Blockout?

Skills that share tags, products or a category with Shot Composer Blockout: Comfyui Topology Viz (automateyournetwork/netclaw, 676 stars), Image to Three.js Model (img2threejs/img2threejs, 18k stars), Web Clone (Jane-xiaoer/claude-skill-web-clone, 1k stars) and Threejs Game Director (majidmanzarpour/threejs-game-skills, 2.5k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Shot Composer Blockout?

benjiyaya (a GitHub user) maintains it in benjiyaya/Calliope, which has 242 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on October 7, 2026.

Source: benjiyaya/Calliope on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.