Alternatives to Invariant Guardrails

Pre-execution budget enforcement for AI agents — Cycles denies overspending and risky tool calls before they run.

Prismor intercepts AI agent tool calls at runtime to block destructive commands and cloak secrets before they hit the model.

Adrian is open-source runtime security that reads an AI agent's chain of thought and blocks malicious plans before they execute.

Alice red-teams AI models and agents, then enforces custom guardrails with runtime AI safety policies.

Enterprise AI security platform that discovers agents and MCP servers, red-teams them, and enforces policy inline at the gateway.

Astra is a pre-execution safety layer that validates AI agent financial actions before they run.

Vorlon enforces AI agent runtime security — blocking policy-violating agent actions, masking sensitive data in transit, and restricting write access at the

Runtime security layer that inspects what goes into your AI agents and controls what comes out

ElevenAgents Guardrails adds real-time safety checks to voice agents — prompt-injection blocking, reply screening, and custom policy

agentsh enforces syscall-level policy for AI coding agents — file, network, and process control that holds no matter the prompt.

Traccia traces, costs, evaluates and enforces policy on AI agents — an AI agent control plane you point at agents you already run.

AgentSeal red-teams AI agents and audits MCP servers with 380+ adversarial attack probes from one CLI.

Runtime authorization for AI agents — allow, deny, redact, or hold every action before it executes

Agentic AI security and MCP discovery that maps what AI agents can actually reach — from prompt to API to data.

Kontext delivers runtime authorization for AI agents — allow-or-deny on every tool call before it executes.

AI agent security and governance that watches the decision point where context and intent collide

Unbound is an Agent Access Security Broker that governs what AI coding agents can run, reach, and touch.

Aembit brokers short-lived, policy-scoped credentials for AI agents and MCP servers through an identity control plane.

Pre-execution action authorization for AI agents — a deterministic, signed gate on every tool call before it runs.

Vibe-train small language models for real-time AI agent evals and guardrails at a fraction of LLM-as-judge cost.

Real-time guardrails, evals and red teaming for text-based LLM agents, running on small language model judges.

Sponsio compiles plain-English agent policies into deterministic LTL contracts enforced at every tool call in under 0.01ms.

AI governance platform that discovers shadow AI, tests models and agents, and enforces policy at runtime with Guardian Agents.

A free, vendor-neutral top 10 of agentic AI security risks, with a mitigation strategy attached to each threat.

Cinder turns your written trust and safety policies into agentic moderation and enforcement workflows, with every decision logged.

Agents Shipgate returns a deterministic merge verdict on AI-generated agent PRs before the code lands.

Open-source OS-level runtime security that keeps real API keys and PII out of compromised OpenClaw and Hermes Agent processes.

Promptfoo brings automated LLM red teaming and AI security testing into your CI/CD pipeline

Tessl is an agent enablement platform for versioning, scanning, evaluating and governing coding agent skills.

Norm Ai encodes legal rules into verifiable AI agents for compliance review, DDQs, and RFPs at regulated institutions.