Agent Friendly Code

simstudioai/sim

GitHub
https://github.com/simstudioai/sim

Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.

Stars:
30k
Language:
TypeScript
Default branch:
main
Last scored:
Overall

At a glance

Rank
#104 of 401
Top 26% · #28 of 82 TypeScript repos
Checks passed
10 of 17
Full list below
Best set up for
Devin + 1 more
Score 80.4
Needs most work for
Aider
Biggest fix: .aider.conf.yml (+14.1 pts)

What it has

What it's missing

What to fix first

Pick an AI agent

Showing fixes for Claude Code

  1. 1
    Type configuration
    Add a type config (tsconfig.json for JS/TS, mypy.ini or pyrightconfig.json for Python). Rust/Go/JVM/Scala/Swift/C#/OCaml/Haskell/Zig are typed by default.
    +7.9 pts
  2. 2
    Manageable size
    If possible, split into smaller modules or carve out a focused entry path. Document where to start in AGENTS.md.
    +5.3 pts
  3. 3
    Reproducible dev env
    Add a Makefile or devcontainer or Dockerfile so the agent can set up the project in one command.
    +4.7 pts

Score for each AI agent

Each agent weighs the checks by its own docs. Under each score are its top three. How each agent is scored →

Devin
#68 of 401
80.4
  • ~Reproducible dev env
  • ✓Dependency manifest
  • ~Test suite
Kimi Code CLI
#99 of 401
80.4
  • ✓AGENTS.md / CLAUDE.md
  • ~Test suite
  • ✓Dependency manifest
Cursor
#41 of 401
80.1
  • ✓Cursor rules (.cursor/rules)
  • ✓README
  • ✗Type configuration
Pi
#100 of 401
79.9
  • ✓AGENTS.md / CLAUDE.md
  • ~Test suite
  • ✓Linter / formatter config
Codex
#110 of 401
79.5
  • ✓AGENTS.md / CLAUDE.md
  • ✓README
  • ~Test suite
Claude Code
#141 of 401
78.2
  • ✓AGENTS.md / CLAUDE.md
  • ~Test suite
  • ~Reproducible dev env
OpenHands
#99 of 401
72.7
  • ✓CI configuration
  • ✓Dependency manifest
  • ~Reproducible dev env
Gemini CLI
#136 of 401
69.0
  • ✗GEMINI.md
  • ✓README
  • ~Test suite
Aider
#182 of 401
67.3
  • ✗.aider.conf.yml
  • ✓Linter / formatter config
  • ~Test suite

Does simstudioai/sim have agent instructions?

An AGENTS.md (or CLAUDE.md) at the root tells AI coding agents how to build, test and work in the repo. A few agents also read a file of their own.

AGENTS.md / CLAUDE.md
AGENTS.md (new tab) · 23,351 characters
Agent-specific files
.cursor/rules (new tab) (21 .mdc files), .agents/skills (new tab) (42 skills)No GEMINI.md, .openhands/setup.sh or .aider.conf.yml
Repos that have one
62 of 82 TypeScript repos · 221 of 401 repos on the leaderboard · See examples →

All 17 checks · 10 passed

Skills (.agents/skills)· 100% pass
42 skills in .agents/skills/
.agents/skills/add-block/SKILL.md
AGENTS.md / CLAUDE.md· 100% pass
Substantive (23,351 characters)
AGENTS.md
.aider.conf.yml· 0% pass
No .aider.conf.yml at repo root
CI configuration· 100% pass
19 GitHub Actions workflows
.github/workflows
CONTRIBUTING guide· 100% pass
Guide present
.github/CONTRIBUTING.md
Cursor rules (.cursor/rules)· 100% pass
21 .mdc files in .cursor/rules/
.cursor/rules/constitution.mdc
Dependency manifest· 100% pass
Manifest present
package.json
Reproducible dev env· 60% pass
package.json has 126 scripts
package.json
GEMINI.md· 0% pass
No GEMINI.md at repo root
License file· 100% pass
License present
LICENSE
Linter / formatter config· 100% pass
Config detected
biome.json
.openhands/setup.sh· 0% pass
No .openhands/setup.sh
Pre-commit / git hooks· 100% pass
Hook framework configured
.husky
README· 100% pass
README detailed (10,459 characters)
README.md
Manageable size· 20% pass
10000+ files — very large
Test suite· 70% pass
Test files detected (apps/desktop/e2e/background-executor.spec.ts)
apps/desktop/e2e/background-executor.spec.ts
Type configuration· 0% pass
No type config found

How simstudioai/sim compares

vs leaderboard average
9.6 pts above
Average 66.8
vs TypeScript average
5.2 pts above
Average 71.2
Stars among TypeScript repos
#57 of 82

Missing here, and how many repos have it

  • Type configuration · passed by 68% of leaderboard repos, 68% of TypeScript repos

Passes checks most repos miss

  • Skills (.agents/skills) · only 17% of repos pass it
  • Cursor rules (.cursor/rules) · only 4% of repos pass it
  • Pre-commit / git hooks · only 29% of repos pass it

One fix for the most agents: Type configuration would raise the score for all 9 agents, by up to 11.5 points.

Similar repos

Same language and host as this repo, closest in overall score.

All TypeScript repos →

Same topics, any language

Repos tagged with the same GitHub topics, most shared first.

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Agent friendly score for github/simstudioai/sim
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