anc.dev The agent-native CLI standard

nushell

A new type of shell

notable Rust nushell/nushell
71% pass rate
4/7 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

Top Issues

All Checks

P1: Non-Interactive by Default

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)
SKIP Flags advertise env-var bindings in --help target exposes no flags in --help

P2: Structured, Parseable Output

SKIP Structured output support no --output/--format flag detected

P3: Progressive Help Discovery

PASS Help flag produces useful output
PASS Version flag works

P4: Fail-Fast, Actionable Errors

PASS Rejects invalid arguments

P6: Composable, Predictable Command Structure

PASS Handles SIGPIPE gracefully
SKIP Pager-using CLI ships --no-pager escape hatch no pager signal (less/more/$PAGER/--pager) in --help
FAIL Respects NO_COLOR output contains ANSI escape sequences despite NO_COLOR=1

P7: Bounded, High-Signal Responses

WARN Quiet mode available no --quiet/-q flag detected in --help output

Details

Version scored
0.112.2
Audit date
2026-05-01 10:09:43 UTC
Duration
65ms
Platform
linux/x86_64
Mode
command
Anc build
0.3.0
Install
brew install nushell

Embed the badge

The badge floor is 80%; this scorecard is at 71% (9 points below). Once the score clears the floor, the embed snippet will appear here. The top issues above are the place to start.

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

anc check --command nu --output json

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