motion-previs-studio: Instructions file for Codex

AGENTS.md

motion-previs-studio AGENTS.md is an instructions file for Codex, OpenCode from wassermanproductions/motion-previs-studio. It costs 1,568 tokens per session, scanned A, original, Apache-2.0.

Project instructions for Motion Previs Studio, an Electron desktop app for turning reference video into camera, pose, depth, and other control data for AI-video tools and Blender.

In plain words
What is it for?
They help with development, builds, smoke tests, engine checks, and end-to-end tests for the video-processing and export workflow.
Why use it?
They give a coding agent the app’s purpose, technology choices, hard rules, and checks to run before making changes.

Instructions file for CodexOpenCode

Written for Codex and OpenCode: the file is AGENTS.md. Also seen: mentions Claude Code; mentions AGENTS.md; mentions Codex.

This is wassermanproductions/motion-previs-studio's own configuration. It tells Codex and OpenCode how to work on motion-previs-studio itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything motion-previs-studio configures →

Reuse

Borrowing it

Nothing to install: this file belongs to wassermanproductions/motion-previs-studio. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/wassermanproductions/motion-previs-studio/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/wassermanproductions/motion-previs-studio

Made for: Codex, OpenCode.

Wrote this? Show the measurements

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README.md
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Per session 1,568 This file is loaded in full into every session.
When invoked 1,568 The same file — it is already loaded in full.
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 $0.01568 $0.01568
Opus 5 $0.00784 $0.00784
Sonnet 5 $0.00314 $0.00314
Haiku 4.5 $0.00157 $0.00157

Measured 8d ago against content hash 7c22b0d471fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

motion-previs-studio AGENTS.md 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 8d 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.

AGENTS.md · 70 lines

How it starts

The opening of the file, as written. The whole thing — 70 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AGENTS.md — running & modifying Motion Previs Studio with an AI agent

This file is the single source of truth for AI coding agents (Claude Code, Codex, Hermes, …) working on this repo. Read it before making changes.

What this app is

Electron + TypeScript + React desktop app. Filmmakers import a reference video shot, extract pose (MediaPipe), depth, a subject-masked optical-flow camera solve, edges/lineart/masks/normals control layers, and OpenPose BODY_25 skeleton video + keypoints, then export a production pack (control videos + prompts + Blender scripts + ZIP) for AI-video generators (Seedance, ComfyUI, Runway, Kling) and Blender. All ML runs locally in the renderer.

Commands

npm install            # once; runs scripts/prepare-mediapipe-assets.cjs (postinstall)
npm run dev            # Vite + Electron with hot reload (127.0.0.1 only)
npm run build          # tsc + vite build into dist/
npm start              # run the production build
npm run verify         # smoke checks (tests/smoke.cjs)
npm run verify:quality # unified quality-score sync check
npm run verify:engines # engine/runtime checks
npm run verify:e2e     # headless Electron export; asserts openpose_pose.mp4 + openpose_keypoints.json land in the bundle
npm run verify:all     # verify + build + verify:e2e
npm run dist           # electron-builder → arm64 DMG + ZIP in release/

Definition of done for any change: npm run build && npm run verify:quality && npm run verify:engines && npm run verify:e2e green. Run npm run verify:all before shipping.

Repo map

src/                React UI. App.tsx owns the whole studio surface.
src/lib/            Pure-ish analysis modules, all locally runnable:
                    pose.ts (MediaPipe), cameraMotion.ts (LK + RANSAC camera solve),
                    aiDepth.ts (Depth Anything), openpose.ts (BODY_25 render + JSON),
                    poseVideo.ts, frameEncoder.ts (deterministic ffmpeg frame encode),
                    quality.ts (single source of the unified quality score).
src/components/     ThreePreview (three.js stick figure), PoseCanvas.
src/control/        Agent-control renderer layer: registry.ts (the window.__mps surface
                    contract), handler.ts (whitelisted action dispatcher, wired from main.tsx).
electron/           main.cjs (window, IPC, ffmpeg, save/restore, Send to Blockout, control server wiring),
                    control.cjs (localhost HTTP agent-control server + discovery file),
                    preload.cjs (window.motionPrevis bridge), security.cjs (path + IPC allowlist).
mcp/                motion-previs-mcp.mjs (zero-dep stdio MCP bridge) + README.md (agent-integration guide).
shared/             quality.cjs — the CJS mirror of src/lib/quality.ts (verify:quality checks they agree).
tests/              e2e-electron.cjs (real export + control-server smoke), smoke, quality-sync, engines.
public/             generated MediaPipe/model/bin assets (gitignored).

Read the full file on GitHub · 70 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. 8d ago First seen · 70 lines · 1,568 tokens per session scan A 7c22b0d471fa

Subscribe to this mod's changes

motion-previs-studio AGENTS.md is an instructions file published in the GitHub repository wassermanproductions/motion-previs-studio (343 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 1,568 tokens to every session, about $0.0078 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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