MCP.Market

Rtcf MCP server

online · 100% uptime
by hengkp·io.github.hengkp/rtcf·v1.0.0
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Turns rough requests into sharp Role/Task/Context/Format prompts. Thai and English.

B77/100grade B
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Safety scan
B77/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

Rtcf tools (3, 1 write)

write = sends, deletes, buys or posts
  • build_promptFree

    Compose a ready-to-use prompt from explicit Role, Task, Context, and Format parts. Use when the user already knows the pieces and wants them woven into one clean prompt.

  • improve_followupwrite actionFree

    Write the user's NEXT message for an AI conversation that is already in progress (a follow-up). Use when the user wants to refine, deepen, or continue earlier work in this conversation. Do NOT use it for a brand-new task (use improve_prompt for that). Returns a short, ready-to-send continuation message that anchors to the existing work instead of restarting it. Requires an API key (add ?key=rk_live_... to the connector URL).

  • improve_promptFree

    Rewrite a rough prompt into a sharper, ready-to-use prompt structured as Role, Task, Context, Format (RTCF). Returns the improved prompt, its four parts, a short list of clarifying questions worth asking the user, and which model tier and effort level suit this kind of work. Use this before answering when the user's request is vague, or when the user asks to improve a prompt.

Public scan report

scanner v0.1.9 · 2026-09-26 · same rubric, same numbers if you re-run it

1 high
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 523ms20/20
  • Tool poisoning3 tool descriptions checked15/15
  • Auth qualityopen endpoint exposes 1 write-action tools with no auth3/15
  • Maintenancelast push 76 days ago12/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Findings (1)

  • highWrite-action tools reachable without authenticationauth.open-write
Overall 77/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Rtcf compares

Against every graded Productivity MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
77/100
higher than 45% of 1,299 Productivity servers
Tools
3
the typical Productivity server has 7
Tools that change things
33%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote Productivity server answers 100%
Response time
272 ms
faster than 53% of 655 Productivity servers

What its tools let an agent do: 2 read · 1 change

Install Rtcf in Claude Code, Cursor or VS Code

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

What the publisher says

From the Rtcf repository's README, as published. We do not edit it. Read it on GitHub

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).

  • Website: https://rtcf.happlen.com
  • Setup guide: https://rtcf.happlen.com/docs
  • By Happlen

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=rklive...

Tools

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

Nothing above is checked by us. What we check is on the safety report.

Rtcf: common questions

Is Rtcf MCP server safe?
Mostly: it is graded B (77/100). Read the Rtcf safety report
How do I install Rtcf?
It runs remotely at rtcf.happlen.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Rtcf need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Rtcf maintained?
The last commit was 115 days ago (2026-07-12). The latest release is v1.0.0.
Is Rtcf up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
What can I use instead of Rtcf?
Servers from other publishers that do the same job: Gsheets MCP server, Mdma MCP server and Open & Async MCP server.
How does Rtcf compare with other Productivity MCP servers?
safety score 77/100 (higher than 45% of 1,299 Productivity servers); tools 3 (the typical Productivity server has 7); tools that change things 33% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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