Nodejs
blencorp/claude-code-kit
Core Node.js backend patterns for TypeScript applications including async/await error handling, middleware concepts, configuration management, testing strategies, and layered architecture principles.
Contributor guide for step three of adding a syncable entity to the Twenty server: write the validator, the migration action builder and the orchestrator wiring.
Install Twenty Syncable Entity Validation
$ npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install twentyhq/twenty syncable-entity-builder-and-validation --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/twentyhq/twenty.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/syncable-entity-builder-and-validation .claude/skills/syncable-entity-builder-and-validation && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "syncable-entity-builder-and-validation" agent skill from https://github.com/twentyhq/twenty/tree/main/.claude/skills/syncable-entity-builder-and-validation into .claude/skills/syncable-entity-builder-and-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "syncable-entity-builder-and-validation", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/twentyhq/twenty/tree/main/.claude/skills/syncable-entity-builder-and-validationType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install twentyhq/twenty syncable-entity-builder-and-validation --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/twentyhq/twenty.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/syncable-entity-builder-and-validation .agents/skills/syncable-entity-builder-and-validation && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "syncable-entity-builder-and-validation" agent skill from https://github.com/twentyhq/twenty/tree/main/.claude/skills/syncable-entity-builder-and-validation into .agents/skills/syncable-entity-builder-and-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "syncable-entity-builder-and-validation", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install twentyhq/twenty syncable-entity-builder-and-validation --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/twentyhq/twenty.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/syncable-entity-builder-and-validation .cursor/skills/syncable-entity-builder-and-validation && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "syncable-entity-builder-and-validation" agent skill from https://github.com/twentyhq/twenty/tree/main/.claude/skills/syncable-entity-builder-and-validation into .cursor/skills/syncable-entity-builder-and-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "syncable-entity-builder-and-validation", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/twentyhq/twenty.git --path .claude/skills/syncable-entity-builder-and-validation--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install twentyhq/twenty syncable-entity-builder-and-validation --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/twentyhq/twenty.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/syncable-entity-builder-and-validation .gemini/skills/syncable-entity-builder-and-validation && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "syncable-entity-builder-and-validation" agent skill from https://github.com/twentyhq/twenty/tree/main/.claude/skills/syncable-entity-builder-and-validation into .gemini/skills/syncable-entity-builder-and-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "syncable-entity-builder-and-validation", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install twentyhq/twenty syncable-entity-builder-and-validationInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/twentyhq/twenty.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/syncable-entity-builder-and-validation .github/skills/syncable-entity-builder-and-validation && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "syncable-entity-builder-and-validation" agent skill from https://github.com/twentyhq/twenty/tree/main/.claude/skills/syncable-entity-builder-and-validation into .github/skills/syncable-entity-builder-and-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "syncable-entity-builder-and-validation", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install twentyhq/twenty syncable-entity-builder-and-validation --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/twentyhq/twenty.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/syncable-entity-builder-and-validation .opencode/skills/syncable-entity-builder-and-validation && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "syncable-entity-builder-and-validation" agent skill from https://github.com/twentyhq/twenty/tree/main/.claude/skills/syncable-entity-builder-and-validation into .opencode/skills/syncable-entity-builder-and-validation/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "syncable-entity-builder-and-validation", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
syncable-entity-builder-and-validation- GitHub stars
- 58k
- Token cost
- ~3.3k tokens
- SKILL.md length
- 232 words
- Files
- 1
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Contributor guide for step three of adding a syncable entity to the Twenty server: write the validator, the migration action builder and the orchestrator wiring.
- Works in 3 steps: Create Validator Service → Create Builder Service → Wire into Orchestrator (CRITICAL)
- Implementing business rule validation for a syncable entity in Twenty
- SKILL.md covers Quick Start, Step 1: Create Validator Service, Step 2: Create Builder Service and Step 3: Wire into Orchestrator…, plus 3 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
This is step 3 of 6 in the workflow for adding a syncable entity to the Twenty server; it is for contributing to Twenty itself, not for building apps on top of it. After the types, cache and transform steps, it creates a validator service for business rules, a builder service that produces workspace migration actions, and the wiring of that builder into the build orchestrator, which the skill flags as the step most often forgotten, since the entity will not sync without it.
Validators follow two rules: they never throw, returning arrays of errors instead, and they never mutate, working on optimistic entity maps. Uniqueness and foreign-key checks use indexed lookups rather than scanning with `Object.values().find()`, which is O(n). The excerpt shows file paths under `src/engine/workspace-manager/workspace-migration/`, NestJS injectable services and validation patterns for required fields and uniqueness, then is cut off.
When your agent uses it
- Implementing business rule validation for a syncable entity in Twenty
- Adding uniqueness or foreign key checks that return errors instead of throwing
- Building workspace migration action builders for a new entity
- Wiring a new builder into the migration build orchestrator
Example prompts
- “Add a validator for the new view-group entity that rejects duplicate names.”
- “Create the migration actions builder for my entity and wire it into the orchestrator.”
- “Review this validator: it throws on duplicates and scans with Object.values().find().”
Requirements
- A checkout of the twentyhq/twenty repository with the earlier steps (types, cache, transform) done
Workflow steps
3 steps, taken from the step headings in SKILL.md.
- Create Validator Service
- Create Builder Service
- Wire into Orchestrator (CRITICAL)
What it can do on your machine
Read from SKILL.md and the folder at commit 0d66dd1. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Twenty Syncable Entity Validation loads about 3.3k tokens when it runs. Until then it costs about 110 tokens; SKILL.md has 232 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 232 words (~3,322 tokens).
“Purpose: Implement business rule validation and create migration action builders.”
- name
- syncable-entity-builder-and-validation
Files
Just SKILL.md in .claude/skills/syncable-entity-builder-and-validation of twentyhq/twenty.
Open the folder on GitHubat commit 0d66dd1
Compare with similar skills
Twenty Syncable Entity Validation next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Twenty Syncable Entity Validation this skilltwentyhq/twenty | 58k | — | ~3.3k | Automated safety check: Pass | Custom licence | |
| Nodejsblencorp/claude-code-kit | 106 | — | ~2.6k | Automated safety check: Pass | MIT | |
| Server Feature Devscragnog/HOT-Step-CPP | 170 | — | ~6.5k | Automated safety check: Notes | MIT | |
| Developing Softwaretelagod/code-abyss | 244 | — | ~410 | Automated safety check: Pass | MIT | |
| Nestjs Code Auditaiskillstore/marketplace | 430 | — | ~2.5k | Automated safety check: Pass | MIT | |
| Node Backend Development Guidelinesdiet103/claude-code-infrastructure-showcase | 10k | 2 repos | ~2k | Automated safety check: Pass | MIT |
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Guides changes to an existing Twenty app: adding or editing objects, layouts, logic functions and front components, with a plan stated before multi-entity edits.
Twenty App Operations
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Twenty Syncable Entity Cache and Transform
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Walks through step 2 of adding a syncable entity to the Twenty server: a cache service for flat entity maps and utilities that transform entities and DTOs into universal flat entities.
Twenty Syncable Entity Wiring
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Registers a new syncable entity in three NestJS modules and adds its service and GraphQL resolver layers when contributing to the Twenty server.
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Step four of adding a syncable entity in the Twenty server: write create, update and delete action handlers that run workspace migrations against the database.
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Related
Works with
Categories
Questions about Twenty Syncable Entity Validation
What does Twenty Syncable Entity Validation do?
Contributor guide for step three of adding a syncable entity to the Twenty server: write the validator, the migration action builder and the orchestrator wiring. This is step 3 of 6 in the workflow for adding a syncable entity to the Twenty server; it is for contributing to Twenty itself, not for building apps on top of it. After the types, cache and transform steps, it creates a validator service for business rules, a builder service that produces workspace migration actions, and the wiring of that builder into the build orchestrator, which the skill flags as the step most often forgotten, since the entity will not sync without it.
When should I use Twenty Syncable Entity Validation?
Twenty Syncable Entity Validation fits situations like: implementing business rule validation for a syncable entity in Twenty; adding uniqueness or foreign key checks that return errors instead of throwing; building workspace migration action builders for a new entity; wiring a new builder into the migration build orchestrator.
How do I install Twenty Syncable Entity Validation in Claude Code?
Run `npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a claude-code`. Or copy the skill folder (.claude/skills/syncable-entity-builder-and-validation in twentyhq/twenty) into .claude/skills/syncable-entity-builder-and-validation in your project. Claude Code loads it when a task matches its description.
How do I install Twenty Syncable Entity Validation in Codex?
Run `npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a codex`. Or copy the skill folder (.claude/skills/syncable-entity-builder-and-validation in twentyhq/twenty) into .agents/skills/syncable-entity-builder-and-validation in your project. Codex loads it when a task matches its description.
Can I use Twenty Syncable Entity Validation in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add twentyhq/twenty --skill syncable-entity-builder-and-validation -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/syncable-entity-builder-and-validation, .gemini/skills/syncable-entity-builder-and-validation, .github/skills/syncable-entity-builder-and-validation and .opencode/skills/syncable-entity-builder-and-validation in your project.
What does Twenty Syncable Entity Validation need to run?
SKILL.md names no scripts, command-line tools or credentials: Twenty Syncable Entity Validation is instructions for the agent only. Our summary lists: A checkout of the twentyhq/twenty repository with the earlier steps (types, cache, transform) done.
Does Twenty Syncable Entity Validation access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Twenty Syncable Entity Validation safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Twenty Syncable Entity Validation use?
Twenty Syncable Entity Validation has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Twenty Syncable Entity Validation use?
About 3.3k tokens (SKILL.md is roughly 13k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Twenty Syncable Entity Validation?
Skills that share tags, products or a category with Twenty Syncable Entity Validation: Nodejs (blencorp/claude-code-kit, 106 stars), Server Feature Dev (scragnog/HOT-Step-CPP, 170 stars), Developing Software (telagod/code-abyss, 244 stars) and Nestjs Code Audit (aiskillstore/marketplace, 430 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Twenty Syncable Entity Validation?
twentyhq (a GitHub organization) maintains it in twentyhq/twenty, which has 57,999 GitHub stars. The repository holds 13 skills in this directory. The repository was last updated on October 7, 2026.
Source: twentyhq/twenty on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.