# mcp-tool-builder

> Use this tool when you need to dynamically generate custom tools based on user requests, solving the problem of limited functionality and improving workflow efficiency. The mcp-tool-builder takes user input and creates new tools as needed, with the output being a newly built tool available for use after restarting Claude Desktop. It is ideal for use cases where adaptability and customization are crucial, such as in dynamic work environments or rapid prototyping scenarios.

Canonical page: https://skillsregistry.net/skills/hanweg-mcp-tool-builder  
JSON: https://api.skillsregistry.net/v1/skills/hanweg-mcp-tool-builder

## Description

MCP server that builds itself by creating new tools as needed based on user requests (Requires restart of Claude Desktop to use newly created tools).

## Trust

- **Trust score (0–1):** 1.00
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-09-28

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/bziiztkcx1)
- **Repository:** <https://github.com/hanweg/mcp-tool-builder>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "hanweg-mcp-tool-builder"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/hanweg-mcp-tool-builder` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/hanweg-mcp-tool-builder/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt