Plano Filter Chains and Guardrails

Use this skill when safety controls or filter pipelines need correction.

When To Use

• "Fix filter chain ordering"
• "Set up MCP filters correctly"
• "Improve guardrail rejection behavior"
• "Harden request processing for safety"

Apply These Rules

• filter-mcp
• filter-guardrails
• filter-ordering

Execution Checklist

1. Configure filter type, transport, and tool explicitly for MCP.
2. Ensure rejection messages are clear and actionable.
3. Order chain as guards -> rewriters -> enrichment -> output checks.
4. Prevent expensive enrichment on unsafe requests.
5. Verify with representative blocked and allowed test prompts.