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antithesis-launch

Launch an Antithesis run with snouty by discovering the harness layout, building the right Docker Compose config, running `snouty validate`, bailing on validation failure, and then submitting `snouty launch` with sane metadata. Use when the user wants to send, submit, or launch an Antithesis run. This skill takes duration in minutes as input.

Quality

95%

Does it follow best practices?

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SecuritybySnyk

Passed

No findings from the security scan

SKILL.md
Quality
Evals
Security

Quality

Content

88%Weight 40%Scale 1-5

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

The content is a strong operational skill: it gives copy-paste-ready commands, an explicitly ordered build-validate-launch sequence with a hard stop on validation failure, and a self-review checklist. Its only weaknesses are minor redundancy (repeated version string and validate-before-launch rule) and a moderately long single-file body whose engine-selection details could live in a reference file.

Suggestions

Remove the duplicated 'Skill version' line from the body (it is already in frontmatter metadata) and consolidate the validate-before-launch rule so it is stated once authoritatively, with the Goal/Self-Review sections referencing it rather than repeating it.

Move the container-engine details (podman vs docker store semantics, the `podman compose` wrapper fallback behavior, `SNOUTY_CONTAINER_ENGINE` guidance) into a short reference file such as `references/engines.md`, leaving a one-line pointer in the Discovery section to reduce the main body's token load.

Trim the Output section's narration (e.g., "it's needed to triage the run when it is done") to bare instructions, since the reason to report run_id is already implied by the report requirement.

DimensionReasoningScore

Conciseness

The body is largely lean and imperative with no padding about concepts Claude already knows, but has minor trimmable redundancy: the version string is repeated in the body after already appearing in frontmatter metadata ("**Skill version:** `2026-10-21 4f8d80b`"), and the validate-before-launch rule is stated three times across Goal, Execution, and Self-Review. This fits anchor 4 (efficient with minor over-explanation) better than anchor 5, where every token would earn its place.

4 / 5

Actionability

The guidance is fully executable: exact commands like `docker compose -f "$CONFIG_DIR/docker-compose.yaml" build`, `snouty validate "$CONFIG_DIR"`, and a complete copy-paste-ready `snouty launch` invocation with all flags and shell variables, plus concrete checks (`snouty --version`, `snouty doctor`, `podman compose version`). It matches anchor 5: specific commands cover the common cases end to end.

5 / 5

Workflow Clarity

The sequence is explicit and ordered ("1. `docker compose build` 2. `snouty validate` 3. if validation fails, stop and report the error 4. `snouty launch`"), with an explicit validation checkpoint before submission ("Do not run `snouty launch` unless the build succeeded and `snouty validate` exited successfully") and a Self-Review checklist to confirm each checkpoint. This matches anchor 5's clear sequence with explicit validation and checklist.

5 / 5

Progressive Disclosure

The single-file body (~95 lines) is well organized into clearly labeled sections (Prerequisites, Goal, Discovery, Run Arguments, Execution, Output, Self-Review) with no nested or buried references. It fits anchor 4 rather than 5 because the body exceeds the under-50-line simple-skill case and some self-contained detail (e.g., the multi-step podman/Docker engine-selection and store semantics in Discovery) could be split into a reference file with a one-line pointer.

4 / 5

Total

18

/

20

Passed

Description

100%Weight 40%Scale 1-5

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

The description is exemplary: it states concrete actions with tool-specific commands, includes an explicit 'Use when' trigger clause with natural synonyms, names its required input, and occupies a distinctive niche. It is concise, in third person, and free of vague fluff or over-claims.

DimensionReasoningScore

Specificity

The description lists multiple concrete actions — "discovering the harness layout, building the right Docker Compose config, running `snouty validate`, bailing on validation failure, and then submitting `snouty launch` with sane metadata" — with specific tool and command names, giving comprehensive coverage of the skill's behavior. Not 4 because coverage is comprehensive rather than having minor gaps; not below because nothing is vague or generic.

5 / 5

Completeness

It explicitly answers both what ("Launch an Antithesis run with snouty by discovering... building... running `snouty validate`... submitting `snouty launch`") and when ("Use when the user wants to send, submit, or launch an Antithesis run"), and adds the required input ("This skill takes duration in minutes as input"). Not 4 because the 'when' clause is fully explicit with concrete trigger phrases, not merely present.

5 / 5

Trigger Term Quality

The trigger clause "Use when the user wants to send, submit, or launch an Antithesis run" covers the natural synonyms (send, submit, launch) plus the distinctive keyword "Antithesis run". This matches the anchor's comprehensive synonym coverage; a user wanting this skill would naturally say one of these phrases.

5 / 5

Distinctiveness Conflict Risk

"Antithesis run" and "snouty" name a clear niche with distinct triggers; no other plausible skill would be triggered by these phrases, so conflict risk is minimal. Anchor 5 is the best fit; anchor 4's "minor overlap risk" does not apply since the domain is highly specific.

5 / 5

Total

20

/

20

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.

Validation — 16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository

antithesishq/antithesis-skills

Path

antithesis-launch/SKILL.md

Reviewed

Table of Contents

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