Report · marked 26 Aug 2026

atlassian/react-beautiful-dnd

An agent can work here, but it will waste turns finding its footing.

JavaScript · 33,947 stars · 791 files · branch master

66 /100 B

Instructions 2/27Whether the repo tells an agent how to behave before it starts guessing. Losing marks on agent instruction file and instruction quality.Setup 14/14Whether 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 18/20Whether the repo fits in a context window, or fights it. Losing marks on file sizes fit in context.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

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.

Instruction quality

Instructions earn their keep by naming exact commands. 'Run the tests with `pnpm test`' beats three paragraphs of philosophy.

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 2/27 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 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 14/14 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 (test:accessibility, test, test:ci, test:browser, test:browser:ci, test:coverage…)

–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 n/a

Not applicable — a library doesn't need a container to be worked on.

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

308 test files against 709 source files.

e.g. cypress/integration/content-security-policy.spec.js, cypress/integration/focus.spec.js, cypress/integration/move-between-lists.spec.js

✓Test command is discoverable 7/7

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

✓Continuous integration 4/4

.circleci/config.yml defines what "passing" means.

✓Lint and format rules 3/3

.eslintrc.js 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 18/20 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 15 patterns.

✗File sizes fit in context 4/6

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.

flow-typed/npm/stylelint_vx.x.x.js — 108KB

flow-typed/npm/lighthouse_vx.x.x.js — 102KB

✓Repository weight 5/5

About 14.8MB 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 — drafted for atlassian/react-beautiful-dnd

# AGENTS.md

Beautiful and accessible drag and drop for lists with React

## Setup

```
yarn install
```

## Commands

```
yarn build                # produce a build
yarn test                 # run the test suite, must pass before any commit
yarn typecheck            # type check without emitting
yarn test:accessibility
yarn test:ci
yarn test:browser
yarn test:browser:ci
yarn test:coverage
```

## Layout

- `test/`       298 source files
- `src/`        231 source files
- `stories/`    82 source files
- `flow-typed/` 70 source files
- `cypress/`    11 source files
- `csp-server/` 7 source files

## Conventions

- Tests live alongside the code they cover, following `cypress/integration/content-security-policy.spec.js`.
- TODO: add the two or three conventions a newcomer always gets wrong here.

## Gotchas

- `flow-typed/npm/stylelint_vx.x.x.js` is 108KB. 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/atlassian/react-beautiful-dnd.md

Show the mark

The badge re-checks daily, so it keeps up as the repository changes. Use mark again to force it now.

[![agent ready](https://agentreadme.com/badge/atlassian/react-beautiful-dnd.svg)](https://agentreadme.com/atlassian/react-beautiful-dnd)

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All JavaScript repositories

Think this mark is wrong?

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