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flox-builds

Building and packaging applications with Flox. Use for manifest builds, Nix expression builds, sandbox modes, multi-stage builds, and packaging assets.

64

Quality

75%

Does it follow best practices?

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SecuritybySnyk

Low

Low-risk findings worth noting

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tessl review fix ./flox-plugin/skills/flox-builds/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

65%Weight 40%Scale 1-3

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The skill is highly actionable — packed with executable, real-world Flox build examples — and well-organized by section. Its weak spots are conciseness (repeated command lists and caveats) and workflow clarity (missing proactive validation gates around publish), and its length outgrows a single file without progressive disclosure to reference files.

Suggestions

Deduplicate command listings and repeated caveats: consolidate the `flox build` invocations and the "build hooks don't run" / "package groups" warnings into single canonical locations.

Add an explicit validation checkpoint to the publish workflow, e.g. verify `./result-<name>/bin/<name>` runs and the closure is trimmed before running `flox publish`.

Split long, self-contained reference material (language-specific build examples, Nix expression patterns) into separate reference files and link to them from SKILL.md to shorten the body and add one-level-deep progressive disclosure.

DimensionReasoningScore

Conciseness

The Flox-specific operational details earn their tokens, but content is padded by redundancy: `flox build` command variants appear in both "Core Commands" and "Running Manifest Builds", the "build hooks don't run" and "package groups" caveats are stated twice, and the Python wrapper script is shown twice near-verbatim.

2 / 3

Actionability

The body is dense with copy-paste-ready, executable examples — complete `[build.*]` TOML blocks with real bash `command` scripts, the wrapper-script pattern, and full language-specific builds for Python, Node, Rust, and Go.

3 / 3

Workflow Clarity

Multi-step flows (dev→publish→runtime, two-stage sandbox builds, hash generation) are clearly sequenced, but there are no in-flow validation checkpoints before destructive steps like publishing; verification appears only post-hoc in the debugging section.

2 / 3

Progressive Disclosure

The ~450-line body is well-sectioned with clear headers and tables, but it is entirely monolithic with no bundle files or links to separate references; content that could be split out (language examples, Nix expression patterns, $out layout reference) lives inline in one file.

2 / 3

Total

9

/

12

Passed

Description

85%Weight 40%Scale 1-3

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong description: it states what the skill does and gives explicit "Use for" triggers tied to a distinct Flox build niche. The only weakness is trigger-term quality, which leans on technical jargon over the natural-language variations a user might actually say.

Suggestions

Add natural-language trigger variations alongside the technical terms, e.g. "Use for building, compiling, or packaging applications with Flox — manifest builds, Nix expression builds, sandbox/pure builds, multi-stage builds, and packaging assets."

DimensionReasoningScore

Specificity

Lists multiple concrete build capabilities — "manifest builds, Nix expression builds, sandbox modes, multi-stage builds, and packaging assets" — matching the multi-action anchor.

3 / 3

Completeness

Explicitly answers what ("Building and packaging applications with Flox") and when ("Use for manifest builds..."), matching the what-and-when-with-triggers anchor.

3 / 3

Trigger Term Quality

The "Use for" clause provides relevant triggers, but terms like "Nix expression builds" and "sandbox modes" lean technical and miss common natural variations (e.g. "compile", "package my app", "binary", "reproducible build").

2 / 3

Distinctiveness Conflict Risk

The "Flox" brand plus build-specific triggers carve a clear niche distinct from sibling skills like flox-environments, flox-publish, and flox-containers.

3 / 3

Total

11

/

12

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
flox/flox-agentic
Reviewed

Table of Contents

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