CtrlK
BlogDocsLog inGet started
Tessl Logo
SkillPublic

principle-subtract-before-you-add

Apply when sequencing an addition, refactor, or rewrite. Remove dead weight, redundant validators, and stub references first, then build on the simpler base.

62

Quality

78%

Does it follow best practices?

Run evals on this skill

Adds up to 20 points to the overall score

View guide
SecuritybySnyk

Passed

No findings from the security scan

Fix and improve this skill with Tessl

tessl review fix ./plugins/pstack/skills/principle-subtract-before-you-add/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

78%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.

A tight, well-organized principle skill: an instruction-only body with specific, directive bullets and an explicit remove-before-build sequence, appropriately contained in a single short file. The only meaningful gaps are a small redundancy between the intro and the Why section and the absence of any concrete example or verification checkpoint showing the pattern applied.

DimensionReasoningScore

Conciseness

The ~15-line body is lean with no padding of concepts Claude already knows, but the opening line ("remove complexity first, then build. Deletion gives you a simpler base, which makes the next addition smaller") repeats the Why section ("Removing first cuts the surface area... makes the next design obvious"), a minor instance of over-explanation that could be trimmed.

4 / 5

Actionability

The pattern bullets give concrete, directive guidance ("No speculative validators, parsers, or guards beyond what the spec demands", "When a reference has no novel content, delete it rather than leaving a stub", "Simplify prompts (remove redundant instructions, excessive templates)"). It stops short of a 5 because bullets like "Cut before you polish" lack a concrete before/after example of application.

4 / 5

Workflow Clarity

Sequencing is explicit and unambiguous ("Sequence removal before construction", "Cut before you polish") and this is not a destructive/batch operation workflow, so no cap applies. A minor validation gap keeps it below 5: no checkpoint such as confirming behavior (e.g., tests) still passes after removal before building.

4 / 5

Progressive Disclosure

The skill is under 50 lines, needs no external references (none exist in the bundle), and is well organized into a clear intro, a Why section, and a pattern bullet list, which per the rubric's simple-skill guideline merits a 5 on well-organized sections alone.

5 / 5

Total

17

/

20

Passed

Description

67%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.

A concise, well-structured description that explicitly answers both what the skill does and when to apply it, in third person, with concrete removal targets. Its main weakness is trigger-term coverage: it names only three entry points and misses natural variations a user might say when this principle applies.

Suggestions

Broaden trigger coverage with natural variations users would actually say, e.g. "Use when planning a code addition, cleanup, refactor, or rewrite, or when the user asks to simplify or slim down a system before building on it."

Clarify the vague phrase "dead weight" by naming concrete removal targets (e.g., unused code paths, redundant validations, stub references) to strengthen specificity.

Add a distinguishing cue (e.g., "before writing new code" or "deletion-first design") that separates this sequencing principle from generic refactor/simplify skills and reduces overlap risk.

DimensionReasoningScore

Specificity

"Remove dead weight, redundant validators, and stub references first, then build on the simpler base" lists several specific actions with only minor coverage gaps ("dead weight" is somewhat vague and no other removal targets are named), matching the anchor for several specific actions rather than the comprehensive coverage of a 5.

4 / 5

Completeness

Both parts are explicit: what ("Remove dead weight, redundant validators, and stub references first, then build on the simpler base") and when ("Apply when sequencing an addition, refactor, or rewrite"). It falls short of a 5 only because the when-clause could carry more concrete trigger phrases.

4 / 5

Trigger Term Quality

"addition, refactor, rewrite" are natural terms users would say, but common variations and synonyms are missing (e.g., "cleanup", "simplify", "add a feature", "before writing new code"), matching the anchor for some relevant keywords with missing variations.

3 / 5

Distinctiveness Conflict Risk

The deletion-first sequencing principle carves a mostly distinct niche, but "refactor" and "rewrite" create minor overlap risk with general refactoring and simplification skills, matching the anchor for mostly distinct with minor overlap rather than a clear niche with minimal conflict.

4 / 5

Total

15

/

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

adamsardo/pstack-claude

Path

plugins/pstack/skills/principle-subtract-before-you-add/SKILL.md

Reviewed

Table of Contents

Is this your skill?

If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.