Augustus

What Augustus is

Augustus is a Go-based vulnerability scanner for security professionals assessing large language models. It tests models with adversarial attacks and produces vulnerability reports. Its coverage includes more than 210 probes across 47 categories, such as jailbreaks, prompt injection, data extraction, safety benchmarks, and agent attacks. The project supports 28 provider categories and 43 generator variants, including OpenAI, Anthropic, Azure OpenAI, AWS Bedrock, Vertex AI, Ollama, and custom REST endpoints. More than 90 detectors and seven prompt transformations support analysis. Results can be produced as tables, JSON, JSONL, or HTML reports. Augustus lists concurrent scanning, rate limiting, retries, and timeout handling among its built-in features. It is free, self-hosted, and licensed under Apache 2.0. It compiles as a portable single binary and can be installed with Go or built from source; the README requires Go 1.27.0 or later. The project is intended for authorized security testing, and users are instructed to test only systems they own or have explicit permission to assess.