nushell-plugin-builder

Guide for creating Nushell plugins in Rust using nu_plugin and nu_protocol crates. Use when users want to build custom Nushell commands, extend Nushell with new functionality, create data transformations, or integrate external tools/APIs into Nushell. Covers project setup, command implementation, streaming data, custom values, and testing.

1.20x

Quality

86%

Does it follow best practices?

Impact

95%

1.20x

Average score across 3 eval scenarios

Securityby

Advisory

Suggest reviewing before use

Evaluation results

100%

Time-Series Data Plugin for Nushell

Custom value types in Nushell plugins

Criteria

Without context

With context

typetag::serde attribute

100%

typetag dependency

100%

serde derive feature

100%

Struct-based custom value

100%

Serialize/Deserialize derives

100%

MsgPackSerializer in main

100%

LabeledError with span

100%

nu_plugin_ binary name

100%

input_output_type declared

100%

record! macro used

100%

CustomValue trait methods

100%

88%

Log Filtering Plugin for Nushell

Streaming commands and safe path/stdio handling

Criteria

Without context

With context

PluginCommand trait used

100%

PipelineData input/output

100%

ListStream::new pattern

100%

engine.get_current_dir() used

100%

is_using_stdio() check

MsgPackSerializer in main

100%

LabeledError with span

100%

input_output_type declared

100%

nu_plugin_ binary name

100%

call.get_flag or call.req used

100%

97%

41%

Word Count Plugin with Test Suite

Plugin testing setup and version compatibility

Criteria

Without context

With context

nu-plugin-test-support dep

100%

PluginTest::new() used

100%

test_examples or eval_with used

70%

Version consistency

50%

100%

env!("CARGO_PKG_VERSION") in version()

100%

call.has_flag or call.get_flag used

100%

MsgPackSerializer in main

100%

LabeledError with span

50%

100%

input_output_type declared

100%

nu_plugin_ binary name

100%

Two or more test functions

100%

Repository: YPares/agent-skills
Commit: aed1afb

Evaluated: 29 days ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

Time-Series Data Plugin for Nushell Log Filtering Plugin for Nushell Word Count Plugin with Test Suite

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