Agent security & threat detection
Microsoft API in Azure AI Content Safety that analyses user prompts and supplied documents for adversarial instructions, returning attack-detected flags for direct user prompt attacks and indirect attacks embedded in external content. It is a detection endpoint that applications must act on rather than an enforcement gateway.
commercial · generally available · Research snapshot 2026-09-06
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Show me a shieldPrompt call flagging an indirect injection hidden in an uploaded document, and how the calling agent enforces a block based on that response.
Support labels reflect the supplied research. Documentation and vendor claims are not independent product tests. “Not established” means the researcher did not find support; it does not prove a capability is absent.
Documented by provider
Prompt Shields is a unified API that detects and blocks adversarial user input attacks on LLMs, covering user prompt injection attempts to circumvent system rules and document-based indirect attacks with hidden instructions in external material.
Limit: Detection is scoped to prompts and documents; tool calls, agent plans and outbound data flows are not covered.
Documented by provider
The API endpoint contentsafety/text:shieldPrompt returns attackDetected booleans for the user prompt and each document, with configurable thresholds for filtering.
Limit: Enforcement depends on the calling application; the API itself does not block traffic.
Listing does not imply partnership, supplier status, a working DutyGraph integration, or a compliance certification.
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