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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.
Install Twenty App Entity Development
$ npx skills add twentyhq/twenty --skill develop-app -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install twentyhq/twenty develop-app --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/packages/twenty-agent-skills/skills/develop-app .claude/skills/develop-app && 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 "develop-app" agent skill from https://github.com/twentyhq/twenty/tree/main/packages/twenty-agent-skills/skills/develop-app into .claude/skills/develop-app/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-app", 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/packages/twenty-agent-skills/skills/develop-appType 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 develop-app -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install twentyhq/twenty develop-app --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/packages/twenty-agent-skills/skills/develop-app .agents/skills/develop-app && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "develop-app" agent skill from https://github.com/twentyhq/twenty/tree/main/packages/twenty-agent-skills/skills/develop-app into .agents/skills/develop-app/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-app", 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 develop-app -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install twentyhq/twenty develop-app --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/packages/twenty-agent-skills/skills/develop-app .cursor/skills/develop-app && 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 "develop-app" agent skill from https://github.com/twentyhq/twenty/tree/main/packages/twenty-agent-skills/skills/develop-app into .cursor/skills/develop-app/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-app", 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 packages/twenty-agent-skills/skills/develop-app--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 develop-app -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install twentyhq/twenty develop-app --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/packages/twenty-agent-skills/skills/develop-app .gemini/skills/develop-app && 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 "develop-app" agent skill from https://github.com/twentyhq/twenty/tree/main/packages/twenty-agent-skills/skills/develop-app into .gemini/skills/develop-app/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-app", 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 develop-appInstalls 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 develop-app -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/packages/twenty-agent-skills/skills/develop-app .github/skills/develop-app && 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 "develop-app" agent skill from https://github.com/twentyhq/twenty/tree/main/packages/twenty-agent-skills/skills/develop-app into .github/skills/develop-app/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-app", 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 develop-app -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 develop-app --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/packages/twenty-agent-skills/skills/develop-app .opencode/skills/develop-app && 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 "develop-app" agent skill from https://github.com/twentyhq/twenty/tree/main/packages/twenty-agent-skills/skills/develop-app into .opencode/skills/develop-app/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "develop-app", 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
develop-app- GitHub stars
- 58k
- Token cost
- ~1.8k tokens
- SKILL.md length
- 934 words
- Files
- 2
- Skills in repo
- 13
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
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.
- Adding a new object or custom field to a Twenty app
- SKILL.md covers Plan Before Editing, Code Organization, Adding New Entities and After Entity Changes
- Calls yarn
- Writing a logic function that runs when a record is created
What it does
Changes to what an existing Twenty app does, meaning its data model, interface, logic and workflows, are the subject here. Before touching entities it checks that the current folder is an app root by looking for package.json and src/application-config.ts, and when they are missing it stops to find the real root or hands off to another skill instead of editing blindly.
For edits that span more than one entity, the agent first states a short plan naming the objects extended, fields added, logic functions and post-install hooks declared, and whether the app needs UI, then confirms with you when there is a real choice. It keeps logic functions, post-install hooks and front components narrow by moving parsers, mappers and formatters into utility files, and it points to shared reference documents for app structure and cross-skill rules.
Neighboring jobs belong to sibling skills: create-app for new apps, manage-app for syncing, deploying and troubleshooting, publish-app for marketplace assets, and use-twenty-mcp for querying workspace records.
When your agent uses it
- Adding a new object or custom field to a Twenty app
- Writing a logic function that runs when a record is created
- Building a front component for a record page
- Adding roles and permissions or a standalone page to an app
Example prompts
- “Add a custom field to the company object in my Twenty app.”
- “Create a logic function that runs when a new deal record is created.”
- “Build a front component that shows deal details on the deal page.”
- “Set up a workflow with a manual trigger in my Twenty app.”
Requirements
- An existing Twenty app with package.json and src/application-config.ts at its root
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
Shell commands in SKILL.md call:
yarn
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use yarn, which can reach the network depending on how they are called.
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 App Entity Development loads about 1.8k tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 934 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 934 words (~1,849 tokens).
“Pick this skill when the user wants to change what an existing Twenty app does — its data model, UI, logic, or workflows. Representative triggers:”
- name
- develop-app
Files
SKILL.md and 1 other file in packages/twenty-agent-skills/skills/develop-app of twentyhq/twenty.
- SKILL.md
- agents/openai.yaml
Open the folder on GitHubat commit 0d66dd1
Compare with similar skills
Twenty App Entity Development 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 App Entity Development this skilltwentyhq/twenty | 58k | — | ~1.8k | Automated safety check: Pass | Custom licence | |
| Readme Generator Probeizhi23/README-Generator-Pro | 113 | — | ~472 | Automated safety check: Notes | None | |
| Develop Feature Builderjsmastery-pro/skills | 1.4k | — | ~3.8k | Automated safety check: Notes | MIT | |
| Moai Ref API Patternsmodu-ai/moai-adk | 1.2k | — | ~1.9k | Automated safety check: Pass | Apache-2.0 | |
| Backend ArchitectFerroxLabs/wayland | 608 | — | ~4.7k | Automated safety check: Pass | Apache-2.0 | |
| HTTP GenerateJuncai22/spring-ai-agent-learning | 123 | — | ~2.2k | Automated safety check: Pass | Apache-2.0 |
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More from twentyhq/twenty
All 13 skills in this repoTwenty App Operations
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Operates an existing Twenty app: managing remotes, syncing, building, deploying, reading logs, running tests and setting up CI/CD, with confirmation for production.
Twenty Syncable Entity Validation
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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.
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.
Twenty Entity Runner Actions
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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.
Syncable Entity Integration Tests
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Related
Categories
Questions about Twenty App Entity Development
What does Twenty App Entity Development do?
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. Changes to what an existing Twenty app does, meaning its data model, interface, logic and workflows, are the subject here.ts, and when they are missing it stops to find the real root or hands off to another skill instead of editing blindly.
When should I use Twenty App Entity Development?
Twenty App Entity Development fits situations like: adding a new object or custom field to a Twenty app; writing a logic function that runs when a record is created; building a front component for a record page; adding roles and permissions or a standalone page to an app.
How do I install Twenty App Entity Development in Claude Code?
Run `npx skills add twentyhq/twenty --skill develop-app -a claude-code`. Or copy the skill folder (packages/twenty-agent-skills/skills/develop-app in twentyhq/twenty) into .claude/skills/develop-app in your project. Claude Code loads it when a task matches its description.
How do I install Twenty App Entity Development in Codex?
Run `npx skills add twentyhq/twenty --skill develop-app -a codex`. Or copy the skill folder (packages/twenty-agent-skills/skills/develop-app in twentyhq/twenty) into .agents/skills/develop-app in your project. Codex loads it when a task matches its description.
Can I use Twenty App Entity Development 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 develop-app -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/develop-app, .gemini/skills/develop-app, .github/skills/develop-app and .opencode/skills/develop-app in your project.
What does Twenty App Entity Development need to run?
Going by SKILL.md and its folder, Twenty App Entity Development needs the command-line tools its instructions call (yarn). Our summary lists: An existing Twenty app with package.json and src/application-config.ts at its root.
Does Twenty App Entity Development 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 App Entity Development 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 App Entity Development use?
Twenty App Entity Development 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 App Entity Development use?
About 1.8k tokens (SKILL.md is roughly 7.4k 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 App Entity Development?
Skills that share tags, products or a category with Twenty App Entity Development: Readme Generator Pro (beizhi23/README-Generator-Pro, 113 stars), Develop Feature Builder (jsmastery-pro/skills, 1.4k stars), Moai Ref API Patterns (modu-ai/moai-adk, 1.2k stars) and Backend Architect (FerroxLabs/wayland, 608 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Twenty App Entity Development?
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.