Kontra

Structured contrarian analysis tool that stress-tests decisions across four modes: counter, probe, redteam, and premortem.

Kontra implements the "Tenth Man Protocol" for decision analysis, providing four structured adversarial analysis modes. Counter mode builds the strongest case against a decision by surfacing blind spots and hidden assumptions. Probe mode generates 7-10 pointed questions across motivation, evidence, alternatives, stakes, and timing. Redteam mode constructs ranked failure scenarios with likelihood estimates and early warning signs. Premortem mode writes a postmortem from 12 months in the future assuming the decision failed.

The tool uses a prompt-return pattern, constructing adversarial prompts and returning them for the host LLM to process. It requires no API keys and works with any MCP-compatible client.