Embabel Agent Documentation/com.embabel.agent.api.tool.callback/ToolResultTruncatingTransformer

ToolResultTruncatingTransformer

class ToolResultTruncatingTransformer(maxLength: Int, truncationMarker: String? = null, logLevel: ToolLoopLoggingInspector.LogLevel? = null, logger: <Error class: unknown class> = LoggerFactory.getLogger(ToolResultTruncatingTransformer::class.java)) : ToolLoopTransformer

Transformer that truncates tool results exceeding a maximum length.

Useful for preventing large tool outputs from consuming excessive context.

Parameters

maxLength

Maximum length of tool result string (default 10,000)

truncationMarker

Marker appended to truncated results

logLevel

Optional log level for truncation events (null = no logging)

logger

Logger to use when logLevel is set

Constructors

ToolResultTruncatingTransformer

constructor(maxLength: Int, truncationMarker: String? = null, logLevel: ToolLoopLoggingInspector.LogLevel? = null, logger: <Error class: unknown class> = LoggerFactory.getLogger(ToolResultTruncatingTransformer::class.java))

Functions

transformAfterIteration

open fun transformAfterIteration(context: AfterIterationContext): List<Message>

Transform history after iteration completes. Return modified list.

transformAfterLlmCall

open fun transformAfterLlmCall(context: AfterLlmCallContext): Message

Transform LLM response before adding to history. Return modified message.

transformAfterToolResult

open override fun transformAfterToolResult(context: AfterToolResultContext): String

Transform tool result before adding to history. Return modified string.

transformBeforeLlmCall

open fun transformBeforeLlmCall(context: BeforeLlmCallContext): List<Message>

Transform history before sending to LLM. Return modified list.