jj

A Git-compatible VCS that is both simple and powerful

workhorse Rust martinvonz/jj

89% pass rate

5/7 principles met

Spec Coverage

How many of the spec's requirements were verified for this tool. See /coverage for the full matrix.

Level	Total	Verified	Unverified
MUST	23	9	14
SHOULD	16	0	16
MAY	7	0	7

WARN Flags advertise env-var bindings in --help Non-Interactive by Default 12 flag(s) found in --help but no `[env: NAME]` bindings advertised

PASS	Non-interactive by default
SKIP	Non-interactive gate flag advertised in --help	target satisfies P1 via alternative gate (help-on-bare or stdin-primary)
WARN	Flags advertise env-var bindings in --help	12 flag(s) found in --help but no `[env: NAME]` bindings advertised

SKIP

Structured output support

no --output/--format flag detected in any subcommand

PASS	Help flag produces useful output
PASS	Version flag works

PASS

Rejects invalid arguments

PASS	Handles SIGPIPE gracefully
PASS	Pager-using CLI ships --no-pager escape hatch
PASS	Respects NO_COLOR

PASS

Quiet mode available

This score (89%) clears the badge floor (80%). Copy this into your README:

[![agent-native](https://anc.dev/badge/jj.svg)](https://anc.dev/score/jj)

Preview:

Reproduce this scorecard for jj locally and inspect the failing checks:

anc check --command jj --output json

Install anc first if you don't have it. Add --output json to get the same JSON shape committed under scorecards/.