dbwls99706/deadends.dev

**Stop AI agents from repeating known failures - in code AND in the real world.**
AI assistants reliably fumble two kinds of problems: known-failed code fixes, and
country-specific real-world rules they've never been exposed to in training.
deadends.dev now covers both:
- **Code errors** (2,089 entries, 51 domains): what NOT to try when an agent
hits ModuleNotFoundError, CUDA OOM, CrashLoopBackOff, etc.
- **Country-scoped dead ends** (250+ entries across 52 countries): visa rules
(ETA/eVisitor, NZeTA, e-visas, arrival cards), banking requirements, legal red
lines (lèse-majesté, §86a, Article 301), cultural taboos (chopsticks in rice,
clock gifts in China, red-ink names in Korea), food safety (tap-water safety by
country), emergency numbers, driving norms (left-hand traffic), housing
contracts - all the friction where a plausible-sounding global answer is wrong
locally.
> **Why the expansion?** Coding dead ends are largely solved by a good LLM.
> Country-specific friction - Japanese hanko requirements, Schengen 90/180
> math, Ramadan business hours, Saudi alcohol ban, Indian beef taboos - is
> where generic AI advice breaks hardest. The codebase and schema are
> identical; the env segment just carries a country code.
> **90% Precision@1** · **0.935 MRR** · Data Quality Dashboard
> **Website:** deadends.dev · **MCP Server:** Smithery · **PyPI:** deadends-dev · **API:** /api/v1/index.json
> **Repository:** https://github.com/dbwls99706/deadends.dev
Why Use This?
| Without deadends.dev | With deadends.dev |
|---------------------|-------------------|
| Agent tries sudo pip install → breaks system Python → wastes 3 retries | Agent sees "dead end: sudo pip - fails 70%" → skips it immediately |
| Agent tells user to tip 15% at a Tokyo restaurant | Agent knows tipping is refused in Japan (culture/tipping-refused/jp) |
| Agent drafts a Thai social post referencing King Rama X | Agent stops: Article 112 lèse-majesté risk (legal/lese-majeste-article-112/th) |
| Agent fixes error A, gets confused by error B | Agent knows "A leads to B 78% of the time" → handles both |
| Agent tells unmarried couple to kiss publicly in Dubai | Agent flags UAE public decency law (legal/unmarried-public-affection/ae) |
**What makes this different from asking an LLM?**
- **Deterministic**: Same query → same answer, every time. No hallucination.
- **Country-scoped**: ID format {domain}/{slug}/{env} - env holds the country
code (kr, jp, us, de...) so the same taboo can be answered
differently for different jurisdictions.
- **Primary-sourced**: Every country canon cites government sites, embassies,
or verifiable reporting. No "based on general knowledge" answers.
- **Community-validated**: Fix success rates updated from real outcome reports.
- **Sub-millisecond**: Local regex matching, no API roundtrip.
현실적인 한계 (운영 관점)
- 모든 에러를 다 커버하지는 못합니다. 없는 케이스는 이슈/PR/report_outcome로 빠르게 보완합니다.
- 설명의 깊이보다 **실전 해결 우선**(dead end/workaround 중심)으로 설계되어 있습니다.
- 신뢰성은 도메인/케이스마다 다를 수 있으므로, 고위험 변경은 공식 문서/벤더 가이드와 교차 검증을 권장합니다.
Quick Start (30 seconds)
MCP Server (Claude Desktop / Cursor)
Add to ~/.claude/claude_desktop_config.json:
Or install via Smithery (no local setup):
MCP Unauthorized 빠른 해결 가이드 (사람용)
deadend: calling "initialize": sending "initialize": Unauthorized 에러가 보이면 아래를 **순서대로 그대로 실행/확인**하세요.
1) 로컬 서버 모드인지, 원격(Smithery) 모드인지 하나만 사용
2) Claude Desktop 설정 파일 점검 (cwd는 실제 경로여야 함)
3) 로컬 서버 직접 실행 테스트
4) Smithery 모드라면 재설치(토큰/설정 꼬임 복구)
5) 마지막으로 Claude Desktop 완전 재시작
> 팁: Unauthorized는 보통 잘못된 cwd, 중복 서버 설정(로컬+원격 동시), 또는 만료된 인증 상태에서 발생합니다.
Antigravity (Google AI IDE)
Add as a remote MCP server - no authentication required:
> **Note:** Antigravity uses serverUrl (not url). If you get Unauthorized, remove any existing deadend entries from the MCP Store and re-add manually using the config above. See the Antigravity MCP auth guide for general troubleshooting.