ModelCompactor

reference

1 min readUpdated 2026-07-28

Kind: Class

Source: atloria-monorepo/libs/agent-core/src/context/model-compactor.ts

Methods

Method	Signature	Returns
`compact`	`compact(items: unknown[])`	`Promise<string>`
`getSummary`	`getSummary()`	`CompactionSummary
`setSummary`	`setSummary(summary: CompactionSummary)`	`void`
`getEvents`	`getEvents()`	`readonly CompactionEvent[]`
`formatSummaryForContext`	`formatSummaryForContext()`	`string`
`hasPendingCompaction`	`hasPendingCompaction()`	`boolean`
`flush`	`flush()`	`Promise<void>`
`reset`	`reset()`	`void`

ModelCompactor stops the work with Error when !content — “Compaction model returned empty content”.
ModelCompactor stops the work with Error when !parsed.sessionGoal && typeof parsed.sessionGoal !== 'string' — “Invalid compaction summary: missing sessionGoal”.
ModelCompactor stops the work with Error when !parsed.progress || typeof parsed.progress !== 'object' — “Invalid compaction summary: missing progress”.
ModelCompactor stops the work with an early return when historyText.length < 100.
ModelCompactor stops the work with an early return when !this.currentSummary.
ModelCompactor stops the work with an early return when this.config.useV1Endpoint.