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Code Firewall MCP server

by egoughnour·io.github.egoughnour/code-firewall-mcp·v0.7.0
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Structural similarity-based code filter. Stops malicious code pattern reaching execution tools.

B75/100grade B
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Safety scan
B75/100

full report

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

Code Firewall tools (11, 1 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • firewall_blacklist

    Add a code pattern to the blacklist.

  • firewall_check

    Check if code is safe to pass to execution tools like rlm_exec.

  • firewall_check_code

    Check if code string is safe (without requiring a file).

  • firewall_list_patterns

    List patterns in the blacklist or delta collection.

  • firewall_ollama_status

    Check Ollama server status and embedding model availability.

  • firewall_record_delta

    Record a near-miss variant to help sharpen the classifier.

  • firewall_remove_patternwrite action

    Remove a pattern from the blacklist or delta collection.

  • firewall_setup_ollama

    Install Ollama via Homebrew (macOS).

  • firewall_setup_ollama_direct

    Install Ollama via direct download (macOS) - no Homebrew, no sudo.

  • firewall_status

    Get firewall status and statistics.

  • firewall_system_check

    Check if system meets requirements for Ollama embeddings.

Public scan report

scanner v0.1.10 · 2026-10-01 · same rubric, same numbers if you re-run it

no findings
  • Code scan5 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 255 days ago4/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 75/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install Code Firewall in Claude Code, Cursor or VS Code

claude mcp add code-firewall-mcp -- uvx code-firewall-mcp
Add to Cursor

Code Firewall: common questions

Is Code Firewall MCP server safe?
Mostly: it is graded B (75/100). Read the Code Firewall safety report
How do I install Code Firewall?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Code Firewall need an API key?
No secret keys are declared. It reads 8 settings from the environment.
Is Code Firewall maintained?
The last commit was 267 days ago (2026-01-19). The latest release is v0.7.0.

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