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Agent skill

API Endpoint Creator

by c0x12c in c0x12c/ai-toolkit

Creates RPC-style endpoint following layered architecture (Controller → Manager → Repository).

No licenceAuto-check passedBackend & APIs

Install API Endpoint Creator

skills CLI
$ npx skills add c0x12c/ai-toolkit --skill api-endpoint-creator -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install c0x12c/ai-toolkit api-endpoint-creator --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/c0x12c/ai-toolkit.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.codex/skills/api-endpoint-creator .claude/skills/api-endpoint-creator && rm -rf skills-src

Use ~/.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/

Facts

Skill name
api-endpoint-creator
GitHub stars
106
Token cost
~3.3k tokens
SKILL.md length
360 words
Files
4
Skills in repo
33
Repo updated
First seen
Licence
None found

At a glance

Creates RPC-style endpoint following layered architecture (Controller → Manager → Repository).

  • Works in 8 steps: Create Response/Request Models → Create Controller → Create Manager Interface → …
  • Creating new API endpoints
  • SKILL.md covers When to Use, Process, Interaction Style and Rules, plus 1 more section
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

API Endpoint Creator is an agent skill from c0x12c/ai-toolkit. Creates RPC-style endpoint following layered architecture (Controller → Manager → Repository). Use when creating new API endpoints or CRUD operations.

Its SKILL.md is about 3.3k tokens, which your agent loads only when the skill is triggered. The skill folder holds 3 other files (for example `error-handling-guide.md`, `examples.md` and `testing-patterns.md`).

It sits in Backend & APIs, covering REST APIs. It works with Kotlin.

When your agent uses it

  • Creating new API endpoints
  • CRUD operations

Example prompts

  • “Use the api-endpoint-creator skill to create RPC-style endpoint following layered architecture (Controller → Manager → Repository)”
  • “/api-endpoint-creator”

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. Create Response/Request Models
  2. Create Controller
  3. Create Manager Interface
  4. Create Manager Implementation
  5. Register Factory Bean
  6. Create Retrofit Client
  7. Create Integration Test
  8. Run Tests

What it can do on your machine

Read from SKILL.md and the folder at commit 96b2c9d. 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 kotlin and bash).

    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

API Endpoint Creator loads about 3.3k tokens when it runs. Until then it costs about 43 tokens; SKILL.md has 360 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~43
When it runs · the whole SKILL.md, loaded when a task matches
~3.3k

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

Without a licence we can't republish the file, so here is its outline and opening line. It has 360 words (~3,257 tokens).

“Creates complete RPC-style API endpoints following strict layered architecture patterns.”

— opening of SKILL.md by c0x12c
name
api-endpoint-creator

Read the full SKILL.md on GitHub

Files

SKILL.md and 3 other files in .codex/skills/api-endpoint-creator of c0x12c/ai-toolkit.

  • SKILL.md
  • error-handling-guide.md
  • examples.md
  • testing-patterns.md

Open the folder on GitHubat commit 96b2c9d

Compare with similar skills

API Endpoint Creator 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.

API Endpoint Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
API Endpoint Creator this skillc0x12c/ai-toolkit106—~3.3kAutomated safety check: PassNone
Browser4 Devplatonai/Browser41.2k—~2.2kAutomated safety check: PassApache-2.0
Connekt Script WriterAmplicode/spring-skills126—~4.7kAutomated safety check: PassNone
Add Telegram API Actionvendelieu/telegram-bot249—~974Automated safety check: PassApache-2.0
API DesignerJeffallan/claude-skills12k2 repos~2kAutomated safety check: PassMIT
Paperclippaperclipai/paperclip99k—~9.6kAutomated safety check: PassMIT

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Works with

Categories

Questions about API Endpoint Creator

What does API Endpoint Creator do?

Creates RPC-style endpoint following layered architecture (Controller → Manager → Repository). API Endpoint Creator is an agent skill from c0x12c/ai-toolkit. Creates RPC-style endpoint following layered architecture (Controller → Manager → Repository).

When should I use API Endpoint Creator?

API Endpoint Creator fits situations like: creating new API endpoints; CRUD operations.

How do I install API Endpoint Creator in Claude Code?

Run `npx skills add c0x12c/ai-toolkit --skill api-endpoint-creator -a claude-code`. Or copy the skill folder (.codex/skills/api-endpoint-creator in c0x12c/ai-toolkit) into .claude/skills/api-endpoint-creator in your project. Claude Code loads it when a task matches its description.

How do I install API Endpoint Creator in Codex?

Run `npx skills add c0x12c/ai-toolkit --skill api-endpoint-creator -a codex`. Or copy the skill folder (.codex/skills/api-endpoint-creator in c0x12c/ai-toolkit) into .agents/skills/api-endpoint-creator in your project. Codex loads it when a task matches its description.

Can I use API Endpoint Creator 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 c0x12c/ai-toolkit --skill api-endpoint-creator -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/api-endpoint-creator, .gemini/skills/api-endpoint-creator, .github/skills/api-endpoint-creator and .opencode/skills/api-endpoint-creator in your project.

What does API Endpoint Creator need to run?

SKILL.md names no scripts, command-line tools or credentials: API Endpoint Creator is instructions for the agent only.

Does API Endpoint Creator 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 API Endpoint Creator 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 API Endpoint Creator use?

No licence was found for API Endpoint Creator or its repository. Without one, default copyright applies: ask the author before reusing or redistributing it.

How many tokens does API Endpoint Creator 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 API Endpoint Creator?

Skills that share tags, products or a category with API Endpoint Creator: Browser4 Dev (platonai/Browser4, 1.2k stars), Connekt Script Writer (Amplicode/spring-skills, 126 stars), Add Telegram API Action (vendelieu/telegram-bot, 249 stars) and API Designer (Jeffallan/claude-skills, 12k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains API Endpoint Creator?

c0x12c (a GitHub organization) maintains it in c0x12c/ai-toolkit, which has 106 GitHub stars. The repository holds 33 skills in this directory. The repository was last updated on June 18, 2026.

Source: c0x12c/ai-toolkit on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.