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DKnownAI Guard

Prompt Injection Detection for Agentic Workflows

Pricing
Freemium
Free, Pro
Added
Apr 21 2026

About DKnownAI Guard

DKnownAI Guard is a security API built for agentic AI, used by developers to detect manipulation of AI agents that execute code, access files, call tools and interact with real systems. It is designed for agents such as Claude Code, Manus and OpenClaw, protecting agent autonomy without blocking legitimate operations.

A developer sends a request's text to one REST API endpoint with an API key, and DKnownAI Guard analyzes intent rather than just filtering words, returning one of four risk classifications: AGENT_HACK, SYS_FLAG, CONTENT_FLAG or SAFE. An optional session_id lets the API evaluate a message together with earlier turns in the same conversation to catch multi-turn escalation.

DKnownAI Guard separates manipulation attempts such as prompt injection, jailbreak and system prompt extraction (AGENT_HACK) from high-risk system operations like deleting a database (SYS_FLAG) and from compliance-sensitive content (CONTENT_FLAG), leaving routine requests marked SAFE to process normally. It supports more than 100 languages and includes context-aware detection for multi-turn conversations.

DKnownAI Guard offers a Free plan at $0 a month with 1,000 API calls, and a Pro plan at $1.99 a month (first month $0.99) with 5,000 API calls and priority technical support, marked as coming soon. It is accessed over a REST API endpoint and is operated by Shenzhen Dknown Intelligence Technology Co., Ltd., with its AI models registered with China's Cyberspace Administration.

Use cases

  • Blocking an agent hijacking attempt impersonating an administrator
  • Flagging a risky system operation like deleting a production database for developer review
  • Detecting a multi-turn social engineering attack that escalates to credential theft
  • Protecting developer tools, copilots and automation agents that trigger real actions

Key features

  • Detects prompt injection and jailbreak attempts
  • Four-level intent-driven risk classification
  • Context-aware detection using conversation history
  • Separates operational risk from content risk
  • Supports more than 100 languages
  • REST API with Bearer token authentication
  • session_id tracks multi-turn conversation context
  • Sub-200ms response latency
  • Proprietary safety classification model trained on multilingual content
  • Native integration with the OpenClaw agent framework

Pros and cons

Pros

Protects agent autonomy without breaking legitimate functionality

Cons

The Pro plan is marked Coming Soon and not yet available

Pricing

Free
$0
month
  • 1,000 API calls / month
  • All four safety classifications
  • Multilingual support
  • REST API
  • Email support
Pro
$1.99
month
  • First month $0.99
  • 5,000 API calls / month
  • All Free features included
  • Priority technical support
  • Built for production teams

Reviews

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Frequently asked questions

What is DKnownAI Guard?
A security API built for agentic AI that helps developers detect manipulation, separate operational and content-related risk, and keep useful agent behavior intact for legitimate requests.
How is DKnownAI Guard different from content moderation?
Traditional content moderation checks whether text itself is harmful; DKnownAI Guard focuses first on whether someone is trying to manipulate the agent.
Does DKnownAI Guard detect prompt injection and jailbreak attempts?
Yes, it is designed to detect prompt injection, jailbreak attempts, system prompt extraction, role-based deception and other hijacking tactics.
What do AGENT_HACK, SYS_FLAG, CONTENT_FLAG, and SAFE mean?
AGENT_HACK indicates manipulation targeting the agent, SYS_FLAG a direct request for a high-risk system action, CONTENT_FLAG compliance-sensitive content, and SAFE a routine request.
When should I use session_id in requests?
Use the same session_id across one continuous conversation so DKnownAI Guard evaluates the latest message together with earlier turns.

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