agents-core/ai.koog.agents.core.dsl.extension/HistoryCompressionStrategy/FromTimestamp

FromTimestamp

data class FromTimestamp(val timestamp: Instant) : HistoryCompressionStrategy(source)

A strategy for compressing message histories using a specified timestamp as a reference point. This strategy removes messages that occurred before a given timestamp and creates a summarized context for further interactions.

This strategy preserves all system messages as well as the first user message (if presented) and memory messages (if provided) and then appends tldr of the subset of messages starting from the provided timestamp (except trailing tool calls).

Parameters

timestamp

The timestamp indicating the earliest point to retain messages from.

Constructors

FromTimestamp

constructor(timestamp: Instant)

Properties

timestamp

val timestamp: Instant

Functions

compress

open suspend override fun compress(llmSession: AIAgentLLMWriteSession, memoryMessages: List<Message>)

Compresses the conversation history by retaining the messages from the timestamp, generating a summary, and composing the resulting prompt with the necessary messages.