Report · marked 25 Aug 2026
etcd-io/etcd
An agent can work here, but it will waste turns finding its footing.
Go · 52,173 stars · 1,499 files · branch main
63
/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
16/20Whether an agent can install the project and get it running without a human. Losing marks on environment config.Verification loop
19/22Whether an agent can check its own work. This is the category that most decides whether agent output is trustworthy. Losing marks on lint and format rules.Context economy
14/20Whether the repo fits in a context window, or fights it. Losing marks on no committed build output and file sizes fit in context.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
Environment config
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.
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 16/20 A-
Whether an agent can install the project and get it running without a human.
✓Deterministic install
6/6
go.sum pins the dependency tree.
Found go.sum
✓Discoverable commands
6/6
Commands are declared where an agent will look for them.
Makefile
scripts/ directory
✗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
2/2
The language runtime version is pinned.
go.mod declares a Go version
✓Reproducible environment
2/2
.devcontainer/devcontainer.json gives a known-good environment.
Verification loop 19/22 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
590 test files against 1130 source files.
e.g. .github/workflows/antithesis-test.yml, .github/workflows/cherrypick-bot-ok-to-test.yaml, api/etcdserverpb/raft_internal_stringer_test.go
✓Test command is discoverable
7/7
An agent can find and run `make test`.
✓Continuous integration
4/4
11 GitHub Actions workflows 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
n/a
Not applicable — the Go compiler type checks every build.
Context economy 14/20 B+
Whether the repo fits in a context window, or fights it.
✗No committed build output
3/6
Generated output is committed: coverage/.
Add these to .gitignore and `git rm -r --cached` them. Generated files pollute search results, so an agent grepping for a function finds the compiled copy and edits the wrong file.
✓.gitignore hygiene
3/3
.gitignore covers 36 patterns.
✗File sizes fit in context
4/6
1 source file is 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.
api/etcdserverpb/gw/rpc.pb.gw.go — 167KB
✗Repository weight
4/5
About 98.8MB 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 Distributed reliable key-value store for the most critical data of a distributed system ## Setup ``` go mod download ``` ## Commands ``` make build # produce a build make install-benchmark make bench-put make build-all make tools make test # run the test suite, must pass before any commit ``` ## Layout - `server/` 383 source files - `tests/` 272 source files - `client/` 195 source files - `pkg/` 88 source files - `tools/` 62 source files - `etcdctl/` 42 source files ## Conventions - Tests live alongside the code they cover, following `.github/workflows/antithesis-test.yml`. - CI defines what passing means. See `.github/workflows/antithesis-test.yml`, and keep it green. - TODO: add the two or three conventions a newcomer always gets wrong here. ## Gotchas - `api/etcdserverpb/gw/rpc.pb.gw.go` is 167KB. 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/etcd-io/etcd.md
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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.