fault

# fault > Helping Engineers and AI-agents cooperate to build reliable applications Build Like You Have a Full Team: Get AI-powered review hints on reliability, performance and best practices. Ground Your Deliveries: Automate SLO-validated scenarios with zero config - preview your feature under fault in seconds. Replay Incidents with Ease: Swiftly understand how your application reacts by exploring production flakiness locally. **Examples** Scramble a LLM prompt by injecting a system prompt: ```bash fault run llm openai --case prompt-scramble --instruction "Respond as a pirate. Arr" ``` Introduce latency to all calls made through the fault proxy to any hosts: ```bash fault run --with-latency --latency-mean 300 --upstream '*' ``` Generate a test scenario for a given, OpenAPI specification: ```bash fault scenario generate --scenario scenario.yaml --spec-url http://example.com/openapi.json ``` Run a scenario: ```bash fault scenario run --scenario scenario.yaml ``` Generate a deep analysis of scenario results with a SRE feel: ```bash fault agent scenario-review --results results.json ``` Run fault as a MCP server: ```bash fault agent tool ``` ## Explanations - [Understanding Fault Injection - Purpose and Use in Reliability Engineering - fault](https://fault-project.com/explanations/fault-injection-basics/): Understanding Fault Injection - Purpose and Use in Reliability Engineering - [My Technical Journey Through fault - fault](https://fault-project.com/explanations/technical-journey/): My Technical Journey Through fault - [Understanding eBPF and its Context In Reliability Engineering - fault](https://fault-project.com/explanations/understanding-ebpf/): Understanding eBPF and its Context In Reliability Engineering - [Why fault? - fault](https://fault-project.com/explanations/why-fault/): Why fault? ## How-to - [Install the fault CLI - fault](https://fault-project.com/how-to/install/): Install the fault CLI - [Run with Chaos Toolkit - fault](https://fault-proj