MCP server for Google Cloud Armor WAF log patrol: deny summaries and false-positive checks
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent β or use 1-click editor setup below.
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Manual Client & Custom JSON ConfigExpand JSON βΎ
Client Config & Setup
Choose your client or environment
Target File:
π‘ Paste the JSON block into your client's configuration file under mcpServers, then restart the application.
Capabilities & Tool Schemas (5)
Inspect callable tools, capabilities, and parameters exposed to AI agents by Cloud Armor WAF Patrol MCP.
daily_briefOne-call morning summary: enforced DENYs by rule priority, home-region false-positive lens, preview DENYs
enforce_deniesEnforced DENY counts per rule priority
home_region_deniesEnforced DENYs whose source IP geolocates to your home region β anything not marked known-normal is a false-positive candidate
preview_deniesPreview (dry-run) DENY counts β a quiet preview rule is a promotion candidate
health_checkVersion, config presence, and a minimal Cloud Logging probe
Documentation Overview
cloudarmor-mcp
English | ζ₯ζ¬θͺ
MCP server for Google Cloud Armor WAF log patrol β deny summaries per rule, home-region false-positive checks, and preview (dry-run) rule review, straight from Cloud Logging.
Built for a daily "is the WAF healthy?" patrol: one daily_brief call answers what did we block, did we block anyone we shouldn't have, and are the preview rules ready to promote.
Documentation: https://shigechika.github.io/cloudarmor-mcp/
Tools
| Tool | Purpose |
|---|---|
daily_brief | One-call morning summary: enforced DENYs by rule priority, home-region false-positive lens, preview DENYs |
enforce_denies | Enforced DENY counts per rule priority |
home_region_denies | Enforced DENYs whose source IP geolocates to your home region β anything not marked known-normal is a false-positive candidate |
preview_denies | Preview (dry-run) DENY counts β a quiet preview rule is a promotion candidate |
health_check | Version, config presence, and a minimal Cloud Logging probe |
All tools are read-only. Counts are hard-capped (default 2000 entries per query) and a capped result is reported as >= N (capped), never as an exact total.
Setup
1. Least-privilege service account
Create a service account with roles/logging.viewer only and download a key. Unlike human accounts, service accounts are not subject to organization re-authentication policies, so an unattended patrol never silently expires.
2. Install
3. Environment variables
| Variable | Required | Meaning |
|---|---|---|
CLOUDARMOR_PROJECT | yes | GCP project ID that receives the load-balancer logs |
GOOGLE_APPLICATION_CREDENTIALS | yes | Path to the service-account key file |
CLOUDARMOR_BACKEND_SERVICES | no | Comma-separated backend service names to filter (default: all) |
CLOUDARMOR_HOME_REGION | no | ISO region code treated as home traffic, e.g. JP. Enables the false-positive lens |
CLOUDARMOR_RULES_INI | no | Path to a rules INI (labels + known-normal priorities, see below) |
CLOUDARMOR_MAX_ENTRIES | no | Max entries fetched per query (default 2000) |
4. Optional rules INI
Keep your rule numbering out of prompts and give the reports human-readable labels:
5. Claude Code (plugin)
This repository doubles as a single-plugin marketplace, so Claude Code can install the server for you:
The plugin launches uvx cloudarmor-mcp and reads the same environment variables
described in Environment variables above; export them
before starting Claude Code. GOOGLE_APPLICATION_CREDENTIALS still has to point at
a service-account key file that exists on your own machine β the plugin can't ship
or fetch that file for you, so this server can't be fully configured through the
plugin's own settings alone.
uvx must be on the PATH of the process that runs Claude Code β a login
shell usually has it, but a GUI-launched app may not; install
uv system-wide if the plugin fails to start.
6. Claude Code (manual)
with the environment variables above in the server's env.
CLI
Reading the report
- Enforced DENY by rule β your normal blocking volume. Sudden shifts in the mix are worth a look.
- Home-region DENY β requests from your own country/region that were blocked. Legitimate users and legitimate crawlers being denied show up here; scanner traffic that happens to originate locally will too, so the
known_normal_prioritieslist keeps expected rules (e.g. an AutoDiscover block) out of the suspicious list. - Preview DENY β rules in dry-run. A preview rule that stays free of home-region hits over time is a candidate for promotion to enforce.
License
MIT
Related MCP Servers
Adoption & maintenance
Factual signals from GitHub, npm, and our automated checks β not a rating.
Last commit
14d ago
Most recent push to the default branch.
Tools exposed
5
Callable tools this server registers over MCP.
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Frequently Asked Questions about Cloud Armor WAF Patrol MCP
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CategoryDeveloper Tools
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Adoption & activity4/15
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