Report · marked 25 Aug 2026

HeyPuter/puter

Ready for an agent to work in without hand-holding.

TypeScript · 43,241 stars · 1,973 files · branch main

86 /100 A

Instructions 27/27Whether the repo tells an agent how to behave before it starts guessing. Full marks.Setup 20/20Whether an agent can install the project and get it running without a human. Full marks.Verification loop 18/25Whether an agent can check its own work. This is the category that most decides whether agent output is trustworthy. Losing marks on test command is discoverable.Context economy 13/20Whether the repo fits in a context window, or fights it. Losing marks on file sizes fit in context and repository weight.Navigability 10/10How quickly anything new can orient itself. Full marks.

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

Fix these first

Test command is discoverable

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.

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.

The full marking

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

Instructions 27/27 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

✓Instruction quality 12/12

Specific enough that an agent can act on it.

18,003 characters, a workable length

names the actual commands to run

uses headings, so an agent can skim it

includes copyable code blocks

✓README as an entry point 3/3

README has a clear getting-started section.

Setup 20/20 A+

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

✓Deterministic install 6/6

package-lock.json pins the dependency tree.

Found package-lock.json

✓Discoverable commands 6/6

Commands are declared where an agent will look for them.

package.json scripts (test:backend, test:backend:postgres, test:puterjs, test:puterjs:node, test:puterjs:browser, test:puterjs:workerd…)

✓Environment config 4/4

.env.example documents what the app needs to run.

✓Pinned runtime version 2/2

The language runtime version is pinned.

Found rust-toolchain.toml

✓Reproducible environment 2/2

dockerfile gives a known-good environment.

Verification loop 18/25 B+

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

✓Tests exist 8/8

385 test files against 1138 source files.

e.g. extensions/appTelemetry.test.ts, extensions/devWatcher.test.ts, extensions/installedApps.test.ts

✗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.

✓Continuous integration 4/4

9 GitHub Actions workflows define what "passing" means.

✓Lint and format rules 3/3

eslint.config.js encodes the house style.

✓Static type checking 3/3

Strict type checking is on, which catches a whole class of agent mistakes before they run.

Context economy 13/20 B

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 31 patterns.

✗File sizes fit in context 0/6

18 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.

src/gui/src/lib/jquery-ui-1.13.2/jquery-ui.js — 517KB

src/backend/controllers/auth/AuthController.test.ts — 273KB

src/gui/src/UI/UIWindow.js — 263KB

✗Repository weight 4/5

About 51.9MB 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 HeyPuter/puter

undefined

Open the raw markdown or curl -o AGENTS.md agentreadme.com/draft/HeyPuter/puter.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/HeyPuter/puter.svg)](https://agentreadme.com/HeyPuter/puter)

Other TypeScript repositories, marked

freeCodeCamp/freeCodeCamp 69 B openclaw/openclaw 68 B nilbuild/developer-roadmap 45 C vuejs/vue 67 B n8n-io/n8n 87 A anomalyco/opencode 80 A-

All TypeScript repositories

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.

Open an issue, already filled in