Package org.mockserver.llm

Class LlmRefusalPresets

java.lang.Object

org.mockserver.llm.LlmRefusalPresets

public final class LlmRefusalPresets
extends Object

Presets that emit provider-style refusals — the response an aligned model returns when it declines to answer on safety grounds. Mocking a refusal lets an agent's refusal-handling path (retry with a softer prompt, surface a user-facing message, fall back to a tool) be exercised deterministically.

The flagship is Anthropic's refusal shape: a normal HTTP 200 message whose stop_reason is "refusal" (introduced alongside Claude's safety-refusal stop reason) rather than end_turn. The anthropicRefusal() preset builds a Completion carrying that stop reason, which the Anthropic codec encodes into the wire body; the raw wire body is also exposed as ANTHROPIC_REFUSAL_BODY for the chaos content-filter block path.

All factories are static and pure; each call returns a fresh Completion.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ANTHROPIC_REFUSAL_BODY	A fixed Anthropic refusal wire body (empty content, stop_reason:"refusal"), used by LlmContentFilterBodies for a content-filter block.
static final String	ANTHROPIC_REFUSAL_STOP_REASON	The Anthropic stop_reason value signalling a safety refusal.

Method Summary

Modifier and Type	Method	Description
static Completion	anthropicRefusal()	An Anthropic-style refusal: a completion with stop_reason:"refusal" and no text content (matching Anthropic's empty-content refusal), which the Anthropic codec encodes as an HTTP 200 refusal message.
static Completion	anthropicRefusal(String message)	An Anthropic-style refusal carrying a short refusal message as its text content (some refusals include a brief explanation), still with stop_reason:"refusal".

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ANTHROPIC_REFUSAL_STOP_REASON

public static final String ANTHROPIC_REFUSAL_STOP_REASON

The Anthropic stop_reason value signalling a safety refusal.

See Also:

• Constant Field Values

ANTHROPIC_REFUSAL_BODY

public static final String ANTHROPIC_REFUSAL_BODY

A fixed Anthropic refusal wire body (empty content, stop_reason:"refusal"), used by LlmContentFilterBodies for a content-filter block. Deterministic test fixture — the id is fixed rather than random.

See Also:

• Constant Field Values

Method Details

anthropicRefusal

public static Completion anthropicRefusal()

An Anthropic-style refusal: a completion with stop_reason:"refusal" and no text content (matching Anthropic's empty-content refusal), which the Anthropic codec encodes as an HTTP 200 refusal message.

anthropicRefusal

public static Completion anthropicRefusal(String message)

An Anthropic-style refusal carrying a short refusal message as its text content (some refusals include a brief explanation), still with stop_reason:"refusal".