mps-quotations

Use when writing or debugging MPS quotations and anti-quotations — "node literals" that create SNode trees inline in behavior, typesystem, intentions, generator, and other model code. Covers heavy quotations (`Quotation`, `<...>`), light quotations (`NodeBuilder`, constructor-style for bootstrapping), and the four anti-quotation varieties: child (`%(...)%`), list (`*(...)*`), reference (`^(...)^`), property (`$(...)$`). Reach for this skill whenever the task involves splicing runtime values into quoted node trees or choosing between heavy and light quotations.

Quality

100%

Does it follow best practices?

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Adds up to 20 points to the overall score

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Securityby

Passed

No findings from the security scan

Quality

Content

100%

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

The body is a well-organized overview: concise directives, a concrete workflow with a validation checkpoint, and a clean one-level reference index whose files all resolve. It assumes MPS competence and earns every token.

Dimension	Reasoning	Score
Conciseness	Lean and dense — it skips generic explanations of what MPS/SNode/quotation concepts are and instead delivers tight directives, a decision table, and exact role/syntax names. The single version note ('removed in 2019.2') sits in a deprecation context, which the rubric permits.	3 / 3
Actionability	Provides concrete tool commands (`mps_mcp_insert_root_node_from_json`, `mps_mcp_check_root_node_problems`), exact anti-quotation trigger characters (`%`/`*`/`^`/`$`), and a situation→form recommendation table; for an IDE-driven language mechanism this is specific, executable guidance rather than vague direction.	3 / 3
Workflow Clarity	The numbered 'Common-Path Workflow' is clearly sequenced and ends with an explicit validation checkpoint (step 5: `mps_mcp_check_root_node_problems`, 'rebuild the host language if needed') providing a validate→fix→retry feedback loop.	3 / 3
Progressive Disclosure	The body is a focused overview with 11 well-signaled one-level-deep references in a 'Reference Index' that states when to open each; all 11 referenced files exist on disk in references/, with no nested/missing references.	3 / 3
	Total	12 / 12 Passed

Description

100%

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 specific, third-person, and explicitly covers both capability and trigger conditions with concrete syntax for every form. It is concise yet comprehensive, hitting every rubric dimension at the top level.

Dimension	Reasoning	Score
Specificity	Lists multiple concrete actions — 'writing or debugging MPS quotations and anti-quotations', 'create SNode trees inline', and enumerates all four anti-quotation kinds with their exact syntax (`%(...)%`, `(...)`, `^(...)^`, `$(...)$`) plus both heavy (`<...>`) and light (`NodeBuilder`) forms.	3 / 3
Completeness	Explicitly answers both: what it does ('node literals that create SNode trees inline...') and when to use it ('Use when writing or debugging MPS quotations and anti-quotations', 'Reach for this skill whenever the task involves splicing runtime values...').	3 / 3
Trigger Term Quality	Uses natural domain terms an MPS user would actually say — 'quotations', 'anti-quotations', 'node literals', 'splicing runtime values into quoted node trees' — with good coverage of the common phrasings.	3 / 3
Distinctiveness Conflict Risk	Occupies a clear niche (MPS quotation/anti-quotation mechanism) with distinct triggers unlikely to fire for unrelated skills.	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: JetBrains/MPS
Path: .agents/skills/mps-quotations/SKILL.md
Commit: 52c9d63

Reviewed: about 5 hours ago

Table of Contents

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