AI Agent

TrustLoopGuard

Runtime control for production AI agents to stop them before they send, spend, or execute, with open-source policy enforcement.

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TrustLoopGuard

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What is TrustLoopGuard?

TrustLoopGuard is an open-source control boundary that checks proposed outputs or actions from AI agents before they become real side effects, returning decisions like permit, deny, require approval, or defer with a receipt.

TrustLoopGuard vs Similar AI Tools

Pricing ModelFreeFree, FreemiumFreeFree
Free Credits
Key Features
  • Policy before action: checks proposed output before side effect
  • Explicit decision with reason and policies fired
  • Inspectable by default: open-source runtime and wire contract
  • Multi-agent workflow with verification and self-healing
  • 50+ AI models auto-routed per agent
  • 1000+ OAuth2 app integrations
  • Seven breakable boxes covering OWASP Agentic Top-10 vulnerabilities
  • Three guided simulations for cascading failures, human-agent trust, and rogue agents
  • Network-isolated Docker containers for safe execution
  • Code-to-runtime reasoning across cloud, Git, and Kubernetes
  • Action-gate enforces read-only policy on every API call
  • Sandboxed JavaScript execution for concurrent research
Pros
  • Open source and auditable
  • Prevents side effects before execution
  • Replaces 10+ separate tools with one platform
  • Multi-agent orchestration saves time and context switching
  • Covers full OWASP Agentic Top-10 in a realistic manner
  • Docker isolation prevents accidental damage
  • Read-only by construction prevents accidental writes
  • Evidence-backed verification cross-checks every finding
Cons
  • Requires integration effort
  • Early stage, limited community yet
  • Free tier limited to 5,000 credits per month
  • May have a learning curve for complex workflows
  • Requires Docker and technical setup
  • Not for production use; only for lab environments
  • Requires an LLM API key, incurring token costs
  • Limited to read-only operations, cannot remediate
Best For
  • Production AI agents needing safety guardrails
  • Developer teams deploying autonomous agents
  • Marketing teams
  • Content creators
  • Security researchers focusing on AI agent vulnerabilities
  • Developers building MCP-based applications
  • Security engineers
  • DevOps teams

How to use TrustLoopGuard?

  1. 1Install the SDK package (npm install @trustloopguard/sdk)
  2. 2Decorate your agent with guardAgent() passing agent ID and context
  3. 3Submit the intended action and context before any side effect
  4. 4Receive a typed decision (permit, deny, transform, require_approval, defer)
  5. 5Execute or pause based on decision

TrustLoopGuard Key Features

  • Policy before action: checks proposed output before side effect
  • Explicit decision with reason and policies fired
  • Inspectable by default: open-source runtime and wire contract
  • SDK decorator integrates with existing agents
  • Decision and execution receipts for audit trail

TrustLoopGuard Use Cases

  • Shell command guardrails for coding agents
  • Refund approval in customer service agents
  • Preventing unauthorized spending or data exfiltration

TrustLoopGuard Pricing & Free Credits

TrustLoopGuard currently operates on a Free model.

This tool is completely free to use

Open Source

Free

Self-hosted open-source runtime with full features

TrustLoopGuard Pros & Cons

Pros

  • Open source and auditable
  • Prevents side effects before execution
  • Returns explicit decisions with reasons
  • Easy SDK integration

Cons

  • Requires integration effort
  • Early stage, limited community yet
  • Only supports certain action types currently

What is TrustLoopGuard best for?

  • Production AI agents needing safety guardrails
  • Developer teams deploying autonomous agents

TrustLoopGuard FAQ

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