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Best AI to enforce AI guardrails

Apply runtime controls that block, redact, or escalate unsafe AI inputs and outputs. We reviewed 26 products from 21 companies on a 100-point evidence score. These 10 earned a place.

Updated Oct 20, 202626 products reviewed21 companies

Market noteScores reflect documented task fit, adoption evidence, product detail, pricing and market fit. Vendor claims remain unverified unless independently corroborated. Missing evidence indicates uncertainty, not poor product quality.

  1. 1

    Clawvisor Gateway

    by Clawvisor

    Approved tasks and intercepted agent requests are explicit inputs to intent and scope checks. Per-request enforcement, fail-closed containment and action logs complete the runtime-control workflow. Gmail, Slack and Google Drive support broad business applicability.

    Best for businesses restricting AI agents to approved tasks across workplace toolsFree planFrom $120/month

    Task fit
    40/40
    Adoption
    5/20
    Evidence
    11/15
    Pricing
    11/15
    Market fit
    10/10
  2. 2

    Protoguard

    by Metorial

    Protoguard explicitly reviews incoming messages and tool requests, detects prompt injection, and blocks policy violations before they reach business systems. This establishes a complete runtime guardrail workflow, but product-specific adoption remains unsubstantiated.

    Best for businesses enforcing policies on AI-agent messages and enterprise tool requests before executionFree plan

    Task fit
    40/40
    Adoption
    5/20
    Evidence
    11/15
    Pricing
    11/15
    Market fit
    10/10
  3. 3

    Salus runtime

    by Salus

    Checks proposed tool calls against policies and execution context, blocks incorrect actions and provides retry feedback. Pricing starts at $500/month.

    Best for business agents executing consequential backend actionsFrom $500/month

    Task fit
    38/40
    Adoption
    4/20
    Evidence
    13/15
    Pricing
    13/15
    Market fit
    9/10
  4. 4

    Stacktrace Personal Agent Gateway

    by Stacktrace

    Agent verification, risky-action holds, customer approval, and recorded masked decisions establish a complete runtime guardrail workflow. Adoption evidence remains a company-stage proxy; demo access and custom annual pricing provide limited commercial transparency.

    Best for businesses requiring customer approval before risky AI-agent actions proceedFree planCustom pricing

    Task fit
    40/40
    Adoption
    5/20
    Evidence
    11/15
    Pricing
    4/15
    Market fit
    10/10
  5. 5

    Silmaril Firewall

    by Silmaril Security Inc

    Evaluates agent intent, context, tool calls and execution state to block harmful outcomes at runtime.

    Best for application teams needing context-aware runtime blocking for agents

    Task fit
    38/40
    Adoption
    4/20
    Evidence
    12/15
    Pricing
    2/15
    Market fit
    10/10
  6. 6

    Responsible AI Guardrails

    by Airia

    Explicitly protects prompts, responses and workflow interactions in real time, blocking manipulation and preventing data exposure.

    Best for enterprise prompt/response guardrails within a broader orchestration platform

    Task fit
    39/40
    Adoption
    2/20
    Evidence
    12/15
    Pricing
    2/15
    Market fit
    10/10
  7. 7

    Bifrost Edge

    by Maxim AI

    Explicit unsafe-output blocking supports the guardrail task, while routing, budgeting and governance establish broad business applicability. Evidence describes concrete capabilities rather than a documented enforcement workflow; adoption support remains vendor-reported.

    Best for business AI teams seeking unsafe-output blocking alongside AI traffic routing and governanceFree planFrom $29/seat/month

    Task fit
    30/40
    Adoption
    5/20
    Evidence
    8/15
    Pricing
    11/15
    Market fit
    8/10
  8. 8

    ChatGPT DLP

    by Strac

    Explicitly prevents sensitive information from reaching AI models, supported by broader blocking and redaction capabilities for enterprise data protection. Concrete capabilities establish task fit, but implementation detail and product-specific adoption evidence are limited.

    Best for businesses preventing employees from sharing PII, PHI, and sensitive files with AI modelsFree trial

    Task fit
    30/40
    Adoption
    5/20
    Evidence
    8/15
    Pricing
    8/15
    Market fit
    10/10
  9. 9

    Guardrails and Safety

    by AssemblyAI

    PII text/audio redaction and profanity filtering explicitly perform guardrail actions at the transcription layer, with relevant business use cases. Concrete capabilities are described, but a documented implementation workflow is absent.

    Best for businesses safeguarding voice-agent, notetaking, and call-analytics dataFree plan

    Task fit
    30/40
    Adoption
    5/20
    Evidence
    8/15
    Pricing
    8/15
    Market fit
    8/10
  10. 10

    TrustClaw

    by Swif.ai

    TrustClaw explicitly monitors AI-agent behavior, captures audit trails, and blocks unsafe actions. This supports complete guardrail action and business applicability, although a detailed input-to-output workflow is not documented. Adoption evidence is limited to company-level proxies.

    Best for businesses seeking AI-agent action blocking and audit trails, including OpenClaw deploymentsFree plan

    Task fit
    30/40
    Adoption
    5/20
    Evidence
    8/15
    Pricing
    8/15
    Market fit
    8/10

We reviewed 26 candidate products from 21 companies and published 10 positions. Totals include duplicate company entries and products removed during task, market and evidence review. Each company holds at most one position.