Report · marked 26 Aug 2026
google-gemini/gemini-cli
Solid foundations, held back in a few specific places.
TypeScript · 106,685 stars · 2,997 files · branch main
70
/100
B+
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
18/20Whether an agent can install the project and get it running without a human. Losing marks on environment config.Verification loop
25/25Whether an agent can check its own work. This is the category that most decides whether agent output is trustworthy. Full marks.Context economy
15/20Whether 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
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
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 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 18/20 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 (start, start:prod, start:a2a-server, debug, deflake, deflake:test:integration:sandbox:none…)
Makefile
scripts/ directory
✗Environment config
2/4
Env vars are mentioned in the README but there's no example file to copy.
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
2/2
The language runtime version is pinned.
Found .nvmrc
✓Reproducible environment
2/2
dockerfile gives a known-good environment.
Verification loop 25/25 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
989 test files against 2285 source files.
e.g. .github/workflows/smoke-test.yml, docs/ide-integration/ide-companion-spec.md, evals/test-helper.test.ts
✓Test command is discoverable
7/7
An agent can find and run `npm run test`.
✓Continuous integration
4/4
47 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 15/20 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 37 patterns.
✗File sizes fit in context
2/6
15 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.
packages/cli/src/ui/components/InputPrompt.test.tsx — 158KB
packages/core/src/core/geminiChat.test.ts — 157KB
packages/core/src/config/config.test.ts — 143KB
✗Repository weight
4/5
About 102.7MB 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 An open-source AI agent that brings the power of Gemini directly into your terminal. ## Setup ``` npm ci ``` ## Commands ``` npm run start # run the app npm run build # produce a build npm run test # run the test suite, must pass before any commit npm run typecheck # type check without emitting npm run lint # lint npm run format # format npm run start:prod npm run start:a2a-server ``` ## Layout - `packages/` 2006 source files - `scripts/` 82 source files - `tools/` 77 source files - `integration-tests/` 52 source files - `evals/` 44 source files - `memory-tests/` 3 source files ## Conventions - Tests live alongside the code they cover, following `.github/workflows/smoke-test.yml`. - TypeScript runs in strict mode. Type errors are the fastest feedback available, so do not weaken it. - CI defines what passing means. See `.github/workflows/agent-session-drift-check.yml`, and keep it green. - TODO: add the two or three conventions a newcomer always gets wrong here. ## Gotchas - `packages/cli/src/ui/components/InputPrompt.test.tsx` is 158KB. 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/google-gemini/gemini-cli.md
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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.