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syncable-entity-builder-and-validation

Contributing to the Twenty codebase itself (twentyhq/twenty server internals), not for building apps on top of Twenty. Create validation logic and migration action builders for syncable entities in Twenty. Use when implementing business rule validation, uniqueness checks, foreign key validation, or building workspace migration actions for syncable entities. Validators never throw and never mutate.

Quality

78%

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tessl review fix ./.claude/skills/syncable-entity-builder-and-validation/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

63%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 highly actionable, well-sequenced implementation guide whose full code templates and checklist make it genuinely executable for a Twenty contributor. Its weaknesses are token efficiency (the Validation Patterns and checklist duplicate the Step 1 code almost verbatim) and progressive disclosure (all templates are inlined in SKILL.md rather than split into reference files).

Suggestions

Remove the "Validation Patterns" section or replace it with a one-line-per-pattern summary — the four patterns are already fully demonstrated in the Step 1 validator code, so the section (~35 lines) is pure duplication.

Move the full validator and builder service templates into references/ files (e.g., references/validator-template.ts, references/builder-template.ts), keeping SKILL.md to the workflow, key principles, checklist, and a compact pattern summary.

Add an explicit verification step after orchestrator wiring (e.g., run the typecheck/test commands or how to verify the entity syncs) to close the workflow's missing feedback loop.

DimensionReasoningScore

Conciseness

The "Validation Patterns" section (~35 lines) re-states all four patterns already shown in full in the Step 1 code, and the checklist then repeats them a third time — systematic duplication rather than the isolated trimmable instances of anchor 4, so it sits at "mostly efficient but could be tightened".

3 / 5

Actionability

Exact file paths and complete TypeScript templates make the guidance mostly executable, but the builder snippet uses AllFlatEntityMapsByMetadataName and BuildWorkspaceMigrationActionReturnType without imports, and the orchestrator block is diff-style with "// ... existing code" placeholders — minor gaps preventing copy-paste-ready 5.

4 / 5

Workflow Clarity

A clear three-step sequence (Validator → Builder → Orchestrator wiring) with a pre-Step-4 checklist as a validation checkpoint and explicit "most commonly forgotten" warnings; however there is no verify/test feedback loop (e.g., run typecheck or tests after wiring), which anchor 5 requires.

4 / 5

Progressive Disclosure

Section structure is good and the Step 4/6 link is a clear one-level reference, but ~270 lines of full validator/builder code templates are inlined in SKILL.md — the anchor-3 shape of content that belongs in separate reference files; not anchor 4 because the split is clearly warranted, not just a minor gap.

3 / 5

Total

14

/

20

Passed

Description

83%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 strong description with an explicit what-plus-when structure, concrete capability verbs, and a helpful disambiguation clause separating codebase contribution from app building. Its only weaknesses are missing coverage of the orchestrator wiring step and some trigger-term overlap with its sibling skill in the same six-step workflow.

DimensionReasoningScore

Specificity

"Create validation logic and migration action builders for syncable entities" plus concrete sub-actions ("uniqueness checks, foreign key validation") lists several specific actions, matching the anchor-4 example; the orchestrator wiring step (the skill's self-declared CRITICAL step) is omitted, preventing a 5.

4 / 5

Completeness

It explicitly answers both: what ("Create validation logic and migration action builders for syncable entities") and when ("Use when implementing business rule validation, uniqueness checks, foreign key validation, or building workspace migration actions for syncable entities") with concrete trigger phrases, exactly matching the anchor-5 example structure.

5 / 5

Trigger Term Quality

Natural terms a Twenty contributor would say — "business rule validation", "uniqueness checks", "foreign key validation", "workspace migration actions" — give good keyword coverage, but common variations like "entity validators" or "migration builder" are missing, so it falls short of the comprehensive synonym coverage of a 5.

4 / 5

Distinctiveness Conflict Risk

The explicit boundary "not for building apps on top of Twenty" carves a clear niche, but the trigger phrase "building workspace migration actions" overlaps the sibling Step 4/6 (Runner & Actions) skill in the same workflow family, which is minor overlap with a closely related skill rather than minimal conflict risk.

4 / 5

Total

17

/

20

Passed

Validation

93%

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

CriteriaDescriptionResult

relative_links

Relative link issues: 1 suspicious

Warning

Total

15

/

16

Passed

Repository

twentyhq/twenty

Path

.claude/skills/syncable-entity-builder-and-validation/SKILL.md

Reviewed

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