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crowdsecurity

crowdsec-local-mcp

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lint_waf_rule

Lint CrowdSec WAF rules by analyzing YAML content and providing warnings and hints for improvement.

Instructions

Lint a CrowdSec WAF rule and provide warnings/hints for improvement

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
rule_yamlYesThe YAML content of the WAF rule to lint
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description must stand alone. It implies read-only behavior ('warnings/hints') but does not explicitly state side effects, auth requirements, or return format. Adequate but could be more explicit.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, front-loaded, no unnecessary words. Efficiently communicates the core purpose.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the simple input (one parameter) and no output schema, the description lacks details about return format or differentiation from similar sibling tools (e.g., validate_waf_rule). Adequate for a simple lint, but could be more complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with description 'The YAML content of the WAF rule to lint' but the tool description adds no additional meaning beyond that. Baseline 3 is appropriate since schema already covers the parameter.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action (lint), the resource (CrowdSec WAF rule), and the outcome (warnings/hints). It distinguishes from sibling tools like validate_waf_rule (validation vs linting) and generate_waf_rule (generation).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance on when to use this tool versus alternatives like validate_waf_rule or lint_scenario_yaml. No prerequisites or context for appropriate use.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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