Agent skill

Mapper Creator

by Amplicode in Amplicode/spring-skills

Creates a mapper between an entity and a DTO (MapStruct or custom converter).

No licenceAuto-check passedAgent Workflows

Install Mapper Creator

skills CLI
$ npx skills add Amplicode/spring-skills --skill mapper-creator -a claude-code

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

GitHub CLI
$ gh skill install Amplicode/spring-skills mapper-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/Amplicode/spring-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/mapper-creator .claude/skills/mapper-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
mapper-creator
GitHub stars
126
Token cost
~5.4k tokens
SKILL.md length
2,744 words
Files
55 (incl. references)
Skills in repo
16
Repo updated
First seen
Licence
None found

At a glance

Creates a mapper between an entity and a DTO (MapStruct or custom converter).

  • Works in 6 steps: Conversation context first (REQUIRED, no… → Gather minimal project context… → Entity and DTO → …
  • A mapper/converter between entity and DTO needs to be created
  • SKILL.md covers Defaults, Step 0 -- Conversation context…, Decision-making principle —… and Step 1 -- Gather minimal…, plus 5 more sections
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Mapper Creator is an agent skill from Amplicode/spring-skills. Creates a mapper between an entity and a DTO (MapStruct or custom converter). Use this skill when a mapper/converter between entity and DTO needs to be created, either standalone or as part of a larger task (e.g. after DTO creation, during CRUD setup).

Its SKILL.md is about 5.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 62 other files, including reference files (for example `examples/_fragments/after-mapping/java.md`, `examples/_fragments/after-mapping/kotlin.md` and `examples/_fragments/aggregate-ref-from/java.md`).

It sits in Agent Workflows, covering MCP servers. It works with Model Context Protocol and JetBrains IDEs. The repository describes itself as: Amplicode Agent Tools.

When your agent uses it

  • A mapper/converter between entity and DTO needs to be created
  • Either standalone
  • As part of a larger task (e.g

Example prompts

  • “Use the mapper-creator skill to create a mapper between an entity and a DTO (MapStruct or custom converter)”
  • “/mapper-creator”

Workflow steps

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

  1. Conversation context first (REQUIRED, no tool calls)
  2. Gather minimal project context (automatic, no questions)
  3. Entity and DTO
  4. Mapper type and variant settings
  5. Generate code
  6. Add MapStruct dependencies (automatic, MapStruct variant only)

What it can do on your machine

Read from SKILL.md and the folder at commit bf19b3c. 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.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • amplicode.ru

    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

Mapper Creator loads about 5.4k tokens when it runs, and up to ~10k if it reads all its reference files. Until then it costs about 67 tokens; SKILL.md has 2,744 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~67
When it runs · the whole SKILL.md, loaded when a task matches
~5.4k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~10k

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 2,744 words (~5,357 tokens).

“This skill is part of the Spring Agent Toolkit and is designed to work with the Spring MCP server (provided by the Amplicode IntelliJ plugin). Before doing anything else, check your tool list for any Spring MCP tool — they…”

— opening of SKILL.md by Amplicode
name
mapper-creator

Read the full SKILL.md on GitHub

Files

SKILL.md and 54 other files (references) in skills/mapper-creator of Amplicode/spring-skills.

  • SKILL.md
  • examples/_fragments/after-mapping/java.md
  • examples/_fragments/after-mapping/kotlin.md
  • examples/_fragments/aggregate-ref-from/java.md
  • examples/_fragments/aggregate-ref-from/kotlin.md
  • examples/_fragments/aggregate-ref-to/java.md
  • examples/_fragments/aggregate-ref-to/kotlin.md
  • examples/_fragments/context-class/java.md
  • examples/_fragments/context-class/kotlin.md
  • examples/_fragments/custom-to-dto/java.md
  • examples/_fragments/custom-to-dto/kotlin.md
  • examples/_fragments/custom-to-entity/java.md
  • examples/_fragments/custom-to-entity/kotlin.md
  • … and 42 more

Open the folder on GitHubat commit bf19b3c

Compare with similar skills

Mapper 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.

Mapper Creator compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Mapper Creator this skillAmplicode/spring-skills126—~5.4kAutomated safety check: PassNone
Claude Docs Consultantcentminmod/my-claude-code-setup2.7k—~959Automated safety check: PassMIT
Mps Project ManagementJetBrains/MPS1.7k—~2.2kAutomated safety check: PassApache-2.0
Mps MCP WorkflowJetBrains/MPS1.7k—~5.8kAutomated safety check: PassApache-2.0
Ide Diagnostics MCPJetBrains/intellij-community21k—~749Automated safety check: PassCustom licence
Skill Optimization StudyJetBrains/MPS1.7k—~4.4kAutomated safety check: WarnApache-2.0

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Categories

Questions about Mapper Creator

What does Mapper Creator do?

Creates a mapper between an entity and a DTO (MapStruct or custom converter). Mapper Creator is an agent skill from Amplicode/spring-skills. Creates a mapper between an entity and a DTO (MapStruct or custom converter).

When should I use Mapper Creator?

Mapper Creator fits situations like: A mapper/converter between entity and DTO needs to be created; either standalone; as part of a larger task (e.g.

How do I install Mapper Creator in Claude Code?

Run `npx skills add Amplicode/spring-skills --skill mapper-creator -a claude-code`. Or copy the skill folder (skills/mapper-creator in Amplicode/spring-skills) into .claude/skills/mapper-creator in your project. Claude Code loads it when a task matches its description.

How do I install Mapper Creator in Codex?

Run `npx skills add Amplicode/spring-skills --skill mapper-creator -a codex`. Or copy the skill folder (skills/mapper-creator in Amplicode/spring-skills) into .agents/skills/mapper-creator in your project. Codex loads it when a task matches its description.

Can I use Mapper 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 Amplicode/spring-skills --skill mapper-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/mapper-creator, .gemini/skills/mapper-creator, .github/skills/mapper-creator and .opencode/skills/mapper-creator in your project.

What does Mapper Creator need to run?

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

Does Mapper Creator access the network?

SKILL.md names 1 domain. As links in the text: amplicode.ru. This is read from the text; nothing was executed.

Is Mapper 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 Mapper Creator use?

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

How many tokens does Mapper Creator use?

About 5.4k tokens (SKILL.md is roughly 21k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 4.9k tokens, read only when the agent opens those files.

What are the alternatives to Mapper Creator?

Skills that share tags, products or a category with Mapper Creator: Claude Docs Consultant (centminmod/my-claude-code-setup, 2.7k stars), Mps Project Management (JetBrains/MPS, 1.7k stars), Mps MCP Workflow (JetBrains/MPS, 1.7k stars) and Ide Diagnostics MCP (JetBrains/intellij-community, 21k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Mapper Creator?

Amplicode (a GitHub organization) maintains it in Amplicode/spring-skills, which has 126 GitHub stars. The repository holds 16 skills in this directory. The repository was last updated on September 6, 2026.

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