Lelu
Open source authorization engine for AI agents that provides confidence-aware gating, human-in-the-loop review, policy-as-code, and full audit trail.
Lelu
What is Lelu?
Lelu vs Similar AI Tools
| Pricing Model | Free | Free, Freemium | Free | Free |
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How to use Lelu?
- 1Install the SDK: npm install lelu-agent-auth or pip install lelu-agent-auth-sdk.
- 2Import and create the client with your API key.
- 3Use lelu.authorize() before executing agent actions, passing tool name and context.
- 4Handle decision outcomes: allow, human_review, compute, or deny.
- 5For local testing, clone the repo and run ./demo.sh in examples/quickstart.
Lelu Key Features
- Confidence-aware gating
- Human-in-the-loop review
- Policy-as-code with YAML and Rego
- Full audit trail
- Prompt injection detection
- Shadow agent detection
- OAuth Token Vault with AES-256-GCM encryption
- NHI inventory with risk scoring
Lelu Use Cases
- Securing AI agents from prompt injection attacks
- Authorizing agent actions based on confidence thresholds
- Implementing human approval for risky or uncertain tasks
- Auditing all agent decisions for compliance and safety
Lelu Pricing & Free Credits
Lelu currently operates on a Free model.
This tool is completely free to use
Lelu Pros & Cons
Pros
- Open source and self-hostable
- Multi-layered security pipeline
- Works with major AI frameworks (OpenAI, Anthropic, LangChain, etc.)
- Provides human-in-the-loop review
- Comprehensive audit trail
Cons
- Requires integration effort and code changes
- Relatively new project with smaller community
- Performance overhead from multiple checks
What is Lelu best for?
- Development teams building AI agents that need guardrails
- Enterprises requiring audit-grade agent action logs
- Anyone using OpenAI, Anthropic, LangChain, or CrewAI
Lelu FAQ
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