Guardrails ✦ 78outlineNot a production recipe — calibrate thresholds

MCP / tool semantic firewall

Who: MCP client authors. Steps: Pre-tool Nouls per hazard → ALLOW/APPROVE/BLOCK in code. Expected effect: Multi-hazard beats one vague question (author-reported).

1

Treat this as an outline — adapt state and questions to your data.

2

Implement in code — call System One / Jev; compose answers yourself.

3

Gate on confidence — act, confirm, or escalate before side effects.

Outline sketch

Prompt
# MCP / tool semantic firewall
State: relevant software state for this pattern.
Ask: Choice / Score / Noul questions that close the decision space.
Then: compose the route or action in code; escalate when confidence is low.

Needs access to: typesafe-sdk

Who it's for

MCP client authors

Steps / how it's set up

Steps

  1. Pre-tool Nouls per hazard.
  2. ALLOW/APPROVE/BLOCK in code.
  3. Compose the decision in application code and calibrate thresholds on your data.

Sources

Metrics and demo claims are author-reported or cookbook-reported unless you measure them yourself. Calibrate on your data.

Expected effect

Multi-hazard beats one vague question (author-reported)

Unofficial outline for learning. Paraphrased from public docs and tutorials — not a production recipe. Review sources before you automate anything.