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io.github.hengkp/rtcf

Official registry Productivity

Turns rough requests into sharp Role/Task/Context/Format prompts. Thai and English.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http rtcf 'https://rtcf.happlen.com/api/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "rtcf": {
            "type": "http",
            "url": "https://rtcf.happlen.com/api/mcp"
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. RTCF — Prompt Improver (Remote MCP Server)
  2. Endpoint
  3. Tools
  4. Quick setup
  5. REST API
  6. ภาษาไทย

RTCF — Prompt Improver (Remote MCP Server)

Turn rough requests into sharp, structured prompts, right inside Claude, ChatGPT, or any MCP client.

RTCF rewrites a messy request into the four parts every strong prompt needs: Role, Task, Context, Format. Works in Thai and English. Free tier included (5 credits/day, no sign-up).

Endpoint

This is a hosted (remote) MCP server. No installation, no OAuth setup:

https://rtcf.happlen.com/api/mcp

Transport: Streamable HTTP. On a paid plan, append your key: https://rtcf.happlen.com/api/mcp?key=rk_live_...

Tools

ToolWhat it doesCost
improve_promptRewrites a rough request into the RTCF structure and returns a ready-to-use improved prompt1+ credit
build_promptWeaves existing Role/Task/Context/Format parts into one clean promptFree

Quick setup

Claude (web / desktop / mobile)

  1. Settings -> Connectors -> Add custom connector
  2. Paste https://rtcf.happlen.com/api/mcp (leave OAuth fields empty)
  3. In a chat, enable the connector and say: "Improve this prompt with RTCF, then answer it."

ChatGPT (paid plans, Developer mode)

  1. Settings -> Apps -> Advanced -> enable Developer mode
  2. Add a custom connector with the same URL
  3. Ask ChatGPT to use RTCF

Claude Code

claude mcp add --transport http rtcf https://rtcf.happlen.com/api/mcp

REST API

curl -X POST https://rtcf.happlen.com/api/v1/convert \
  -H "Authorization: Bearer rk_live_..." \
  -H "Content-Type: application/json" \
  -d '{"prompt": "help me write an email to my professor"}'

Full API docs: https://rtcf.happlen.com/docs

ภาษาไทย

RTCF คือผู้ช่วยปรับพรอมต์สำหรับคนที่ใช้ AI แล้วไม่รู้จะพิมพ์อะไรดี วางคำขอคร่าว ๆ แล้วรับพรอมต์โครงสร้าง Role, Task, Context, Format กลับไปใช้ได้ทันที ใช้ฟรีวันละ 5 เครดิต ไม่ต้องสมัครสมาชิก ใช้ได้ทั้งบนเว็บ ใน Claude และ ChatGPT ผ่านลิงก์ MCP ด้านบน

Questions: hello@happlen.com

Frequently asked questions

What is io.github.hengkp/rtcf?

Turns rough requests into sharp Role/Task/Context/Format prompts. Thai and English.

How do I install io.github.hengkp/rtcf?

It runs as a remote server. In Claude Code: claude mcp add --transport http rtcf 'https://rtcf.happlen.com/api/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does io.github.hengkp/rtcf need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is io.github.hengkp/rtcf open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains io.github.hengkp/rtcf?

It is published by hengkp. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.