APort Agent Guardrails
VerifiedDeterministic guardrails that authorize AI agent actions before execution.
What is APort Agent Guardrails?
APort Agent Guardrails is an open-source authorization layer that enforces deterministic checks on AI agent actions prior to any tool execution. It prevents prompt-based attacks from overriding security policies by operating as a runtime hook rather than relying on instructions in the model prompt.
The tool integrates with popular agent frameworks through simple configuration hooks and uses standardized Open Agent Passport artifacts to manage agent identity and permissions. Decisions are logged with context, and the system defaults to blocking actions when verification fails.
It is designed for developers and teams building production agents who need reliable security controls, auditable logs, and compatibility with both cloud-hosted and offline deployments.
Capabilities
What you can build with APort Agent Guardrails
Block prompt injection attempts
Run guardrails before tool calls to stop injected instructions from triggering unauthorized actions in live agents.
Audit agent decisions at scale
Capture every allow or deny outcome with full context for compliance reviews and security analysis.
Secure multi-framework deployments
Apply consistent policy enforcement across LangChain, CrewAI, Claude Code, and similar environments.
Install APort Agent Guardrails
npx @aporthq/aport-agent-guardrailsnpx @aporthq/aport-agent-guardrails- 1Run the npx install command and select your target framework such as claude-code or langchain.
- 2Choose to create a new hosted passport, use an existing agent ID, or generate a local passport file.
- 3Allow the installer to write the required configuration hooks for your chosen framework.
- 4Provide an email for quick hosted setup if using the non-interactive mode with environment variables.
- 5Test the integration by running your agent and reviewing the logged authorization decisions.
Works with
APort Agent Guardrails: pros & cons
Pros
- +Zero successful breaches recorded in adversarial CTF testing under restrictive policies
- +Works with multiple established agent frameworks through dedicated plugins
- +Fail-closed behavior and detailed decision logging for reliable security
- +Low-latency verification suitable for production workloads
Cons
- –Requires initial passport and framework configuration steps
- –Hosted option depends on external API calls for verification
- –Primarily focused on pre-action checks rather than post-execution monitoring
Frequently asked questions
It performs authorization through a deterministic runtime hook before any tool executes, independent of model instructions.
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