matter-workspace

Manage matter workspaces — create, list, switch, close, or detach the active matter (practice-level). Use when working across multiple clients or matters and you need to keep one engagement's context separate from another, or when a substantive skill needs to know which matter it's working in.

Quality

92%

Does it follow best practices?

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Securityby

Passed

No findings from the security scan

Quality

Content

85%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 content is highly actionable and well-sequenced with explicit validation/confirmation checkpoints, and it is appropriately self-contained with clean organization. The only weakness is redundancy: subcommand logic and the default-state/confidentiality rules are restated multiple times, leaving room to tighten token efficiency.

Suggestions

Consolidate the subcommand list: keep either the brief summary (lines 13-17) or the detailed 'Subcommand logic' section, and cross-reference from the other rather than restating both.

State the default-off / cross-matter confidentiality rule once (e.g. in 'Cross-matter context') and reference it from 'Notes' and the intro instead of repeating the explanation in three places.

Tighten the 'matter.md template' and intake list by removing prose rationale already implied by field names, to reclaim tokens without losing actionability.

Dimension	Reasoning	Score
Conciseness	The body is largely efficient and assumes Claude's competence (no basic concept explanations), but subcommand logic is stated twice (short list lines 13-17 then again in 'Subcommand logic') and the default-off/confidentiality points are restated across sections, so it could be tightened.	2 / 3
Actionability	Provides concrete executable guidance — exact file paths, the specific 'Active matter:' line to edit, full matter.md and history.md templates, and an enumerated intake questionnaire — which the rubric rewards for instruction-only skills.	3 / 3
Workflow Clarity	Each subcommand is a clearly numbered sequence with explicit confirmation checkpoints ('confirm before writing', 'Show the user the matter.md summary', no auto-switch), and the destructive close archives with a dated history entry and active-matter fallback.	3 / 3
Progressive Disclosure	No bundle files exist, so the skill is self-contained and well-organized under clear section headers with no nested/deep references, which the rubric permits to score 3 for skills with no external references.	3 / 3
	Total	11 / 12 Passed

Description

100%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.

The description is concise, specific, and complete: it enumerates concrete actions, gives explicit trigger guidance for when to use the skill, and occupies a distinctive legal-practice niche with low conflict risk. It is an exemplar description.

Dimension	Reasoning	Score
Specificity	Lists multiple concrete actions — 'create, list, switch, close, or detach the active matter' — matching the multi-action score-3 anchor rather than the single-domain score-2 example.	3 / 3
Completeness	Explicitly answers both what ('create, list, switch, close, or detach') and when ('Use when working across multiple clients or matters...'), exactly matching the score-3 anchor with an explicit 'Use when' trigger.	3 / 3
Trigger Term Quality	Natural terms a multi-matter practitioner would say ('working across multiple clients or matters', 'keep one engagement's context separate', 'which matter it's working in') give good coverage, beyond the partial score-2 level.	3 / 3
Distinctiveness Conflict Risk	'Matter workspaces' is a clear legal-practice niche with distinct triggers unlikely to fire for unrelated skills, satisfying the score-3 'clear niche' anchor.	3 / 3
	Total	12 / 12 Passed

Validation

93%

Warnings & errors only

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

Validation — 15 / 16 Passed

Validation for skill structure

Criteria	Description	Result
frontmatter_unknown_keys	Unknown frontmatter key(s) found; consider removing or moving to metadata	Warning

	Total	15 / 16 Passed

Repository: anthropics/claude-for-legal
Path: regulatory-legal/skills/matter-workspace/SKILL.md
Commit: 4a6c651

Reviewed: 6 days ago

Table of Contents

Discovery Implementation Validation

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