Flint AI CLI is a free, local-first command-line tool for scanning AI agent source code and evaluating agent reliability before deployment. The flintai scan command checks Python agent code for security vulnerabilities, misconfigurations, risky tool access, and missing guardrails. The flintai eval command runs 35+ adversarial and functional evaluations at runtime, testing for prompt injection, jailbreaks, factual accuracy, and instruction adherence. It is framework-agnostic and supports LangChain, CrewAI, OpenAI SDK, Anthropic SDK, AutoGen, MCP servers, and more. No signup is required, no code leaves the user's machine beyond calls to their chosen LLM provider.