4.0.0 org.springframework.boot spring-boot-starter-parent 4.1.1 com.ankurm guardrails 1.0.0 guardrails Prompt injection defences for a Spring AI assistant: retrieved-document filtering, tool allow-lists with argument policies, and output validation, measured against a deliberately gullible stub model. 25 2.0.1 org.springframework.ai spring-ai-bom ${spring-ai.version} pom import org.springframework.ai spring-ai-client-chat tools.jackson.core jackson-databind org.springframework.boot spring-boot-starter-validation org.springframework.boot spring-boot-starter-test test org.apache.maven.plugins maven-surefire-plugin -Duser.timezone=UTC -Dstdout.encoding=UTF-8 -Dfile.encoding=UTF-8