Report · marked 26 Aug 2026
animate-css/animate.css
An agent will struggle here, mostly for fixable reasons.
CSS · 82,750 stars · 150 files · branch main
45
/100
C
Instructions
3/27Whether the repo tells an agent how to behave before it starts guessing. Losing marks on agent instruction file and instruction quality.Setup
12/20Whether an agent can install the project and get it running without a human. Losing marks on environment config and pinned runtime version.Verification loop
4/25Whether an agent can check its own work. This is the category that most decides whether agent output is trustworthy. Losing marks on tests exist and test command is discoverable.Context economy
20/20Whether the repo fits in a context window, or fights it. Full marks.Navigability
7/10How quickly anything new can orient itself. Losing marks on license.
Higher is better. Accent marks what is costing you most.
Fix these first
01
Agent instruction file
Add an AGENTS.md at the root: what the project is, how to install, how to run, how to test, and the two or three conventions a newcomer always gets wrong.
02
Instruction quality
Instructions earn their keep by naming exact commands. 'Run the tests with `pnpm test`' beats three paragraphs of philosophy.
03
Tests exist
This is the single highest-leverage change on this page. Agents don't need full coverage, they need one command that goes red when they break something. Even a handful of tests on the core path converts blind editing into a feedback loop.
The full marking
Every deduction below names the file or setting it came from.
Instructions 3/27 F
Whether the repo tells an agent how to behave before it starts guessing.
✗Agent instruction file
0/12
None found. Every agent that opens this repo starts from zero.
Add an AGENTS.md at the root: what the project is, how to install, how to run, how to test, and the two or three conventions a newcomer always gets wrong.
Looked for AGENTS.md, CLAUDE.md, .github/copilot-instructions.md, .cursorrules
✗Instruction quality
0/12
Nothing to judge, since there are no instructions.
Instructions earn their keep by naming exact commands. 'Run the tests with `pnpm test`' beats three paragraphs of philosophy.
✓README as an entry point
3/3
README has a clear getting-started section.
Setup 12/20 B-
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 (start, compat, dev, raw, prod, format…)
✗Environment config
0/4
Nothing documents the environment this needs. An agent will get a runtime error it can't diagnose.
Add a .env.example listing every variable with a safe placeholder value. It's the cheapest possible fix and it unblocks the whole first run.
✗Pinned runtime version
0/2
No pinned runtime version.
Add a .nvmrc, .python-version, or equivalent so the agent's toolchain matches yours.
✗Reproducible environment
0/2
No container or devcontainer definition.
A Dockerfile or devcontainer removes an entire class of 'it won't install' failures.
Verification loop 4/25 F
Whether an agent can check its own work. This is the category that most decides whether agent output is trustworthy.
✗Tests exist
0/8
No test files found. An agent has no way to know whether its change broke anything.
This is the single highest-leverage change on this page. Agents don't need full coverage, they need one command that goes red when they break something. Even a handful of tests on the core path converts blind editing into a feedback loop.
✗Test command is discoverable
0/7
There's no obvious way to run the tests. Even if tests exist, an agent won't reliably find the entry point.
Add a `test` script or a `test` target that runs the whole suite with no arguments. The convention is the interface — an agent tries `npm test` and `make test` before it tries reading your CI config.
✓Continuous integration
4/4
1 GitHub Actions workflow define what "passing" means.
✗Lint and format rules
0/3
No linter or formatter config. Style is tribal knowledge, so agent output will drift from yours.
A formatter config is the cheapest way to stop reviewing whitespace in agent diffs. It moves style from opinion to a command.
✗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 20/20 A+
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 11 patterns.
✓File sizes fit in context
6/6
No source file is large enough to crowd out a context window.
✓Repository weight
5/5
About 2.0MB checked out, which is comfortable.
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 🍿 A cross-browser library of CSS animations. As easy to use as an easy thing. ## Setup ``` yarn install ``` ## Commands ``` yarn dev # run locally yarn start # run the app yarn format # format yarn compat yarn raw yarn prod yarn docs:library yarn docs:pages ``` ## Layout - `docs/` 7 source files - `docsSource/` 3 source files ## Conventions - There are no tests yet. An agent has no way to check its own work here. - CI defines what passing means. See `.github/workflows/codeql-analysis.yml`, and keep it green. - TODO: add the two or three conventions a newcomer always gets wrong here. --- 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/animate-css/animate.css.md
Show the mark
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[](https://agentreadme.com/animate-css/animate.css)Other CSS repositories, marked
Think this mark is wrong?
Every deduction above names the file it came from, so this can be settled by looking. If a check missed something, that is a rule worth fixing.