Class: ObservationMasker

Defined in: context/observation-masker.ts:99

Constructors

Constructor 

new ObservationMasker(config?): ObservationMasker;

Defined in: context/observation-masker.ts:106

Parameters

Parameter Type
config? Partial<ObservationMaskConfig>

Returns

ObservationMasker

Methods

getConfig() 

getConfig(): ObservationMaskConfig;

Defined in: context/observation-masker.ts:281

Get current configuration (for testing/inspection).

Returns

ObservationMaskConfig

getStats() 

getStats(): ObservationMaskStats;

Defined in: context/observation-masker.ts:263

Returns

ObservationMaskStats

maskHistory() 

maskHistory(messages, currentTurn): MaskResult;

Defined in: context/observation-masker.ts:166

Mask old tool results, images, and compact old tool_use inputs in-place.

  • tool_result: replaces content with compact mask text (Phase 1)
  • image: replaces with text placeholder after maskAfterTurns (Phase 2)
  • tool_use input: strips large fields, keeping only identifying fields (Phase 1b)

Parameters

Parameter Type
messages Message[]
currentTurn number

Returns

MaskResult

reset() 

reset(): void;

Defined in: context/observation-masker.ts:273

Reset all state (stamps and stats). Used when clearing history.

Returns

void

stamp() 

stamp(
   toolUseId, 
   toolName, 
   input, 
   contentLength, 
   turn): void;

Defined in: context/observation-masker.ts:118

Register a tool result with its turn number and input context. Called immediately after a tool result is added to the messages array.

Parameters

Parameter Type
toolUseId string
toolName string
input Record<string, unknown>
contentLength number
turn number

Returns

void

stampImages() 

stampImages(messages, turn): void;

Defined in: context/observation-masker.ts:141

Stamp all image blocks in a message array with the current turn. Call this after adding user messages that may contain images.

Parameters

Parameter Type
messages Message[]
turn number

Returns

void