Atlas / MCP servers / hengkp / rtcf

rtcfSAFE

mcp/hengkp/rtcf-mcp

Prompt improver MCP server (hosted). Turns rough requests into sharp Role/Task/Context/Format prompts. Thai + English.

Verdict
SAFE
Grade
B
Trust score
87 /100
Exposed tools
—
Transport
streamable-http
License
—
Stars
0
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

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=rk_live_...

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

Read from source at commit 1967d730e41dOBSERVED · 2026-10-11
02

Trust audit

SAFEgrade B · trust 87/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codeNA
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfaceWARN
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
none-observed
Shell
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (3)

MEDIUMAuth / authz · mcp.remote_no_auth · CWE-287, CWE-862
streamable-http
Why it matters. a network transport with no auth environment variable found
Fix. require a token
LOWInventory / provenance · inv.no_license · CWE-1104
Why it matters. no LICENSE file and no repo licence
Fix. add a licence
LOWInventory / provenance · mcp.no_tools_extracted · CWE-1104
server.json
Why it matters. the tool list is enumerated at runtime by tools/list, not declared in source
Fix. the page says so rather than showing an empty table

Gates applied: no_behavioural_pass, no_license.

Audited 2026-10-11 · audit v0.4.1 · source sha 1967d730e41dfull audit observations/trust-audit/mcp-server/hengkp__rtcf-mcp.json · Report an issue / request a re-scan
03

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-111967d730e41dSAFEB87first audit
04

Questions

What is the rtcf MCP server?

Prompt improver MCP server (hosted). Turns rough requests into sharp Role/Task/Context/Format prompts. Thai + English.

Is rtcf safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (87/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does rtcf need?

No credential environment variables were found in its source, so it appears to need none.

How does rtcf run?

It speaks streamable-http, so it runs as a service you connect to over the network.

How current is this page?

The grade is for one exact copy of the source (1967d730e41d), read on 2026-10-11. The repository is watched and re-audited when it changes.

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