Report · marked 25 Aug 2026

motiondivision/motion

Solid foundations, held back in a few specific places.

TypeScript · 33,359 stars · 3,181 files · branch main

81 /100 A-

Instructions 24/27Whether the repo tells an agent how to behave before it starts guessing. Losing marks on instruction quality and readme as an entry point.Setup 16/16Whether an agent can install the project and get it running without a human. Full marks.Verification loop 22/25Whether an agent can check its own work. This is the category that most decides whether agent output is trustworthy. Losing marks on static type checking.Context economy 9/20Whether the repo fits in a context window, or fights it. Losing marks on file sizes fit in context and repository weight.Navigability 8/10How quickly anything new can orient itself. Losing marks on written documentation.

Higher is better. Accent marks what is costing you most.

Fix these first

File sizes fit in context

A single file that fills the context window forces an agent to work from fragments, and it will confidently edit code it never saw. Splitting the worst offenders pays for itself immediately.

Repository weight

Large binaries and vendored trees slow every operation an agent performs. Git LFS or a separate assets repo keeps the working tree navigable.

Static type checking

A type checker gives an agent an error message instead of a runtime surprise. It's the second-fastest feedback loop after the compiler.

The full marking

Every deduction below names the file or setting it came from.

Instructions 24/27 A

Whether the repo tells an agent how to behave before it starts guessing.

✓Agent instruction file 12/12

AGENTS.md is present, which is the format the most tools read.

Also found: CLAUDE.md, .cursorrules

✗Instruction quality 10/12

Specific enough that an agent can act on it.

Worth fixing: has no code blocks.

1,269 characters, a workable length

names the actual commands to run

uses headings, so an agent can skim it

✗README as an entry point 2/3

README exists but never explains how to get the thing running.

Give the README an Install and a Usage heading with real commands under each. Agents pattern-match on those headings.

Setup 16/16 A+

Whether an agent can install the project and get it running without a human.

✓Deterministic install 6/6

yarn.lock pins the dependency tree.

Found yarn.lock

✓Discoverable commands 6/6

Commands are declared where an agent will look for them.

package.json scripts (build, watch, dev, dev-server, lint, test…)

Makefile

scripts/ directory

–Environment config n/a

Not applicable — this reads as a library, with no environment to configure.

✓Pinned runtime version 2/2

The language runtime version is pinned.

Found .nvmrc

✓Reproducible environment 2/2

.devcontainer/devcontainer.json gives a known-good environment.

Verification loop 22/25 A

Whether an agent can check its own work. This is the category that most decides whether agent output is trustworthy.

✓Tests exist 8/8

400 test files against 1185 source files.

e.g. dev/react/src/tests/animate-autoplay-false.tsx, dev/react/src/tests/animate-cancel.tsx, dev/react/src/tests/animate-custom-mix.tsx

✓Test command is discoverable 7/7

An agent can find and run `npm run test`.

✓Continuous integration 4/4

1 GitHub Actions workflow define what "passing" means.

✓Lint and format rules 3/3

.eslintrc encodes the house style.

✗Static type checking 0/3

No static type checking.

A type checker gives an agent an error message instead of a runtime surprise. It's the second-fastest feedback loop after the compiler.

Context economy 9/20 C

Whether the repo fits in a context window, or fights it.

✓No committed build output 6/6

No generated directories committed.

✓.gitignore hygiene 3/3

.gitignore covers 45 patterns.

✗File sizes fit in context 0/6

2 source files are over 100KB.

A single file that fills the context window forces an agent to work from fragments, and it will confidently edit code it never saw. Splitting the worst offenders pays for itself immediately.

.yarn/releases/yarn-3.6.4.cjs — 2179KB

packages/framer-motion/src/animation/animators/waapi/__tests__/polyfill.js — 156KB

✗Repository weight 0/5

About 1663MB checked out. Large enough that cloning and searching are both slow.

Large binaries and vendored trees slow every operation an agent performs. Git LFS or a separate assets repo keeps the working tree navigable.

Here is your AGENTS.md

Drafted from what is actually in this repository: the install command from your lockfile, the commands you already declare, your real directory layout. Anything marked TODO needs a person. Save it at the root as AGENTS.md.

AGENTS.md — drafted for motiondivision/motion

# AGENTS.md

A modern animation library for React and JavaScript

## Setup

```
yarn install
```

## Commands

```
yarn dev               # run locally
yarn build             # produce a build
yarn test              # run the test suite, must pass before any commit
yarn lint              # lint
yarn watch
yarn dev-server
yarn test-playwright
yarn test-ci
```

## Layout

- `packages/` 796 source files
- `dev/`      373 source files
- `tests/`    11 source files
- `scripts/`  3 source files

## Conventions

- Tests live alongside the code they cover, following `dev/react/src/tests/animate-autoplay-false.tsx`.
- CI defines what passing means. See `.github/workflows/claude.yml`, and keep it green.
- TODO: add the two or three conventions a newcomer always gets wrong here.

## Gotchas

- `.yarn/releases/yarn-3.6.4.cjs` is 2179KB. It will not fit comfortably in context, so read it in parts.

---

Drafted by agentreadme.com from what is in this repository. Everything marked TODO
needs a human. Check it in as AGENTS.md at the root.

Open the raw markdown or curl -o AGENTS.md agentreadme.com/draft/motiondivision/motion.md

Show the mark

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