Is Deadends Dev MCP Server safe to use?

Deadends Dev MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.

How do I install Deadends Dev MCP Server?

Deadends Dev MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What can Deadends Dev MCP Server do?

Deadends Dev MCP Server provides 11 tools: lookup_error, get_error_detail, list_error_domains, search_errors, list_errors_by_domain and 6 more. See the full tools list on the server page for descriptions and parameters.

What AI clients work with Deadends Dev MCP Server?

Deadends Dev MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is Deadends Dev MCP Server actively maintained?

Deadends Dev MCP Server is actively maintained — last commit was 1 day ago.

Deadends Dev MCP Server

@smithery/cli

Structured failure knowledge for AI agents — dead ends, workarounds, error chains

7.9k/wk 11 tools GitHub npm PyPI

No known CVEs

MIT license

Actively maintained

Last commit 1d ago

Works with most clients

Transport: stdio, sse, http

11 tools · ~328 tok

Grade A · 0.2% of 200K ctx

MCPpedia last refreshed this data 21h ago

Edit this pageView history

Deadends Dev MCP Server is an MCP server that structured failure knowledge for AI agents — dead ends, workarounds, error chains. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 91/100 on MCPpedia's security, maintenance and efficiency rubric.

AI / ML Developer Tools

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "deadend": {
      "cwd": "/path/to/deadends.dev",
      "args": [
        "-m",
        "mcp.server"
      ],
      "command": "python"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/dev-deadends-deadends-dev)](https://mcppedia.org/s/dev-deadends-deadends-dev)

Read me

What Deadends Dev MCP Server does

Stop AI agents from repeating known failures — in code AND in the real world.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@smithery/cli' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

91/100across 5 weighted dimensions

How we score →

0255075100

−9

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @smithery/cli against OSV.dev.

Inventory

Tools (11)

Click any tool to inspect its schema.

~328 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Deadends Dev MCP Server safe to use?: Deadends Dev MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Deadends Dev MCP Server?: Deadends Dev MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can Deadends Dev MCP Server do?: Deadends Dev MCP Server provides 11 tools: lookup_error, get_error_detail, list_error_domains, search_errors, list_errors_by_domain and 6 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Deadends Dev MCP Server?: Deadends Dev MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Deadends Dev MCP Server actively maintained?: Deadends Dev MCP Server is actively maintained — last commit was 1 day ago.

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MCP Security Weekly

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Community

Discussion

Start a conversation

Ask a question, share a tip, or report an issue.

Has anyone used this with Cursor?How do you handle auth?Any alternatives?

Edit this pageView history

AI / ML Developer Tools

Step 1

Install in your client

Config is the same across clients — only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "deadend": {
      "cwd": "/path/to/deadends.dev",
      "args": [
        "-m",
        "mcp.server"
      ],
      "command": "python"
    }
  }
}

Are you the author?

Add this badge to your README to show your security score and help users find safe servers.

Embed in your READMEAbout badges →

[![MCPpedia Score](https://mcppedia.org/api/badge/dev-deadends-deadends-dev)](https://mcppedia.org/s/dev-deadends-deadends-dev)

Read me

What Deadends Dev MCP Server does

Stop AI agents from repeating known failures — in code AND in the real world.

Test This Server

Run this in your terminal to verify the server starts. Then let us know if it worked — your result helps other developers.

npx -y '@smithery/cli' 2>&1 | head -1 && echo "✓ Server started successfully"

After testing, let us know if it worked:

README

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

... View full README on GitHub

Loading README…

Scored, not listed

Why this score

Five weighted categories — click any category to see the underlying evidence.

Score breakdown

91/100across 5 weighted dimensions

How we score →

0255075100

−9

Security

Maintenance

Efficiency

Documentation

Compatibility

Categoriesclick a row to see evidence

Security

OSV.dev

No known CVEs.

Checked @smithery/cli against OSV.dev.

Inventory

Tools (11)

Click any tool to inspect its schema.

~328 tokens total

Community

Reviews

Be the first to review

Have you used this server?

Share your experience — it helps other developers decide.

How easy was setup?Did it work reliably?How was the documentation?

Frequently Asked Questions

Is Deadends Dev MCP Server safe to use?: Deadends Dev MCP Server has no known CVEs as of the latest MCPpedia security scan. It does not require authentication, so any local process can connect — keep this in mind in shared environments. Licensed under MIT.
How do I install Deadends Dev MCP Server?: Deadends Dev MCP Server supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What can Deadends Dev MCP Server do?: Deadends Dev MCP Server provides 11 tools: lookup_error, get_error_detail, list_error_domains, search_errors, list_errors_by_domain and 6 more. See the full tools list on the server page for descriptions and parameters.
What AI clients work with Deadends Dev MCP Server?: Deadends Dev MCP Server is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Deadends Dev MCP Server actively maintained?: Deadends Dev MCP Server is actively maintained — last commit was 1 day ago.