CtrlK
BlogDocsLog inGet started
Tessl Logo

mps-aspect-migrations

Use when authoring or debugging MPS migration scripts that upgrade user models after a language definition changes — covers jetbrains.mps.lang.migration (MigrationScript class-based, PureMigrationScript declarative, MoveConcept/MoveContainmentLink/MoveReferenceLink/MoveProperty, ordering via OrderDependency, data exchange via putData/getData, RefactoringLog, ConceptMigrationReference) and jetbrains.mps.lang.script Enhancement Scripts (MigrationScript with MigrationScriptPart_Instance, ExtractInterfaceMigration, FactoryMigrationScriptPart, CommentMigrationScriptPart) — when a model needs version-gated upgrade, concept rename or removal, link or property rename, instance-level transformation, or composition of migration steps.

71

Quality

89%

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

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.

The content is concise, well-organized, and offers a concrete workflow with a validation step, but its progressive disclosure promise is broken because all referenced reference files are missing from the bundle.

Suggestions

Ship the referenced files under references/ (form-selection.md, json-blueprints.md, lang-migration-reference.md, etc.) so the Reference Index links resolve, or remove links to files that are not bundled.

Add an explicit error-recovery loop after the validation step (e.g. 'If check_root_node_problems reports issues, fix and re-run until clean, then execute the migration').

Inline at least one minimal JSON blueprint for a PureMigrationScript so the body is actionable even before opening references.

DimensionReasoningScore

Conciseness

The body is lean and assumes Claude's competence: it never explains what MPS or a migration is, and each directive and workflow step earns its place without padding.

5 / 5

Actionability

Provides concrete executable guidance with specific MCP tool names (mps_mcp_create_model, mps_mcp_check_root_node_problems) and naming conventions, but the actual JSON script body construction is deferred to reference files rather than shown inline.

4 / 5

Workflow Clarity

A clear six-step sequence is present with a validation checkpoint at step 6 (mps_mcp_check_root_node_problems), but the validation step lacks an explicit error-recovery feedback loop (fix and re-check).

4 / 5

Progressive Disclosure

Structure and a well-signaled one-level reference index are present, but the referenced files (references/form-selection.md, json-blueprints.md, etc.) do not actually exist in the bundle, so the disclosure structure is asserted but not realized.

3 / 5

Total

16

/

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 specific, complete, and well-differentiated, clearly stating both the capabilities and the triggering conditions with natural user language. It is dense but every element earns its place, so verbosity is not penalized.

DimensionReasoningScore

Specificity

Lists many concrete capabilities and named concepts (MoveConcept/MoveContainmentLink/MoveReferenceLink/MoveProperty, OrderDependency, putData/getData, MigrationScriptPart_Instance) with comprehensive coverage across both migration languages.

5 / 5

Completeness

Explicitly states both what it does (covers lang.migration and lang.script with specific constructs) and when to use it via a leading 'Use when' clause plus a trailing 'when a model needs...' enumeration.

5 / 5

Trigger Term Quality

Includes natural user-facing phrases such as 'authoring or debugging MPS migration scripts', 'upgrade user models', and 'concept rename or removal' alongside domain synonyms, giving comprehensive coverage.

5 / 5

Distinctiveness Conflict Risk

Occupies a clearly distinct niche (MPS migration scripts) with specific language references and trigger scenarios, minimizing overlap with unrelated skills.

5 / 5

Total

20

/

20

Passed

Validation

81%

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

Validation13 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

frontmatter_unknown_keys

Unknown frontmatter key(s) found; consider removing or moving to metadata

Warning

relative_links

Relative link issues: 10 missing, 1 suspicious

Warning

referenced_paths_exist

Referenced path issues: 20 missing

Warning

Total

13

/

16

Passed

Repository
JetBrains/MPS
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.