Jangbu Connect

BYOK setup guide for CODEF keys to auto-collect Korean Hometax/bank data

Works with setup

Test report

Verdict
Works with setup
Score
8.0/10
Tested
Jul 24, 2026
Environment
Claude Code 2.x (agent harness)
Upstream re-checked
Jul 30, 2026 · be503ab

This skill is no longer available upstream. Our re-check on Aug 10, 2026 couldn't find it any more (repo unreachable/deleted). The test below is what we measured on Jul 24, 2026 and we're leaving it up as a record — but there is nothing left to install, so we've removed the command.

Verified the local credential store the skill drives actually works: saved fake keys through jangbu_mcp.credentials, which wrote ~/.jangbu/credentials.env at 0o600 permissions, masked the values in the status readout (abcd...5678), and rejected an unsupported key. Confirmed the BYOK safety claims by reading the source — credentials.py makes zero network calls and codef.py only ever contacts the official CODEF endpoints with the user's own keys. Scored output unmeasured because the real end-to-end task (an actual CODEF connection and Hometax pull) sits behind a free-account signup wall and needs the jangbu MCP server registered in the session, neither of which was available; it is a config guide, so 'setup' is the honest verdict regardless.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

  • Installs cleanly 5/5
  • Triggers reliably 5/5
  • Output vs. baseline 5/10
  • Docs & honesty 5/5

What Jangbu Connect does

An interview-style setup guide that walks a Korean user through signing up for the CODEF proxy API and storing their own Client ID/Secret locally (macOS Keychain, falling back to ~/.jangbu/credentials.env) to enable automated Hometax, bank and card data collection. Strictly BYOK: the skill never issues or transmits credentials off-machine. Triggers on requests to connect CODEF or configure automatic collection of Korean tax/financial data.

How to install Jangbu Connect

Nothing to install: the source repository no longer has this skill. If the author brings it back, our daily re-check will pick it up and the command will reappear here.

Commands — how to trigger Jangbu Connect

  • /jangbu-connect BYOK setup guide for CODEF keys to auto-collect Korean Hometax/bank data

It also activates on plain-language prompts like these:

  • CODEF API 키를 설정해서 홈택스 데이터를 자동으로 수집하고 싶어
  • 은행이랑 카드 데이터를 자동으로 연동해줘, 키는 내가 갖고 있어
  • CODEF 프록시 가입부터 자격증명 저장까지 안내해줘

Frequently asked questions

Is the Jangbu Connect skill free?
Yes. The skill itself is free from kimlawtech/korean-jangbu-for. SkillProof publishes the install command and an independent test verdict at no cost.
Does Jangbu Connect work with Claude Code?
We tested it with Claude Code 2.x (agent harness) on Jul 24, 2026. Verdict: Works with setup. Verified the local credential store the skill drives actually works: saved fake keys through jangbu_mcp.credentials, which wrote ~/.jangbu/credentials.env at 0o600 permissions, masked the values in the status readout (abcd...5678), and rejected an unsupported key. Confirmed the BYOK safety claims by reading the source — credentials.py makes zero network calls and codef.py only ever contacts the official CODEF endpoints with the user's own keys. Scored output unmeasured because the real end-to-end task (an actual CODEF connection and Hometax pull) sits behind a free-account signup wall and needs the jangbu MCP server registered in the session, neither of which was available; it is a config guide, so 'setup' is the honest verdict regardless.
What is the Jangbu Connect SkillProof Score?
8.0/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 5/10, docs & honesty 5/5.
How do I install Jangbu Connect?
Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Jangbu Connect with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.