The MCP
Incident Room

A demo assistant is returning confusing trade data. Your job is to design a safe, testable MCP server before the incident gets worse. Choose a path, see the consequence, and try a request yourself.

Scenario A local desktop assistant needs read-only demo data.

Hard boundary Fictional records only. No broker, network API, or credentials.

Your goal Make behavior predictable, validated, and testable.

Decision 1 of 4 Mission briefing

Final check · Run a simulated request

Will your input contract hold?

Run all three boundary cases. Your choices change the simulated route, validation outcome, and error response.

Requested result limit (allowed range: 1–20)

No request sent yet.

Simulated MCP response

Teaching simulator only: this page does not execute TypeScript or speak MCP. The repository tests exercise the real local MCP server.

Will your input contract hold?

Mission debrief