Q17: budget every model request against the provider's context window

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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ZacharyZhang-NYandClaude Opus 5.5 committed 2026-10-08 04:40:02 -04:00
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commit f4d16eb46a
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@@ -5,10 +5,10 @@ const ELIDE_ABOVE_CHARS = 600;
const PREVIEW_CHARS = 300;
/** Older tool results shrink to a preview; the latest turns stay verbatim. */
export function compactToolHistory(messages: AgentTurnMessage[]): { messages: AgentTurnMessage[]; elided: number } {
export function compactToolHistory(messages: AgentTurnMessage[], keepRecent = KEEP_RECENT_TOOL_TURNS): { messages: AgentTurnMessage[]; elided: number } {
const toolTurnIndexes = messages.flatMap((message, index) => (message.role === "tool" ? [index] : []));
const compactBefore = toolTurnIndexes.length > KEEP_RECENT_TOOL_TURNS
? toolTurnIndexes[toolTurnIndexes.length - KEEP_RECENT_TOOL_TURNS]
const compactBefore = toolTurnIndexes.length > keepRecent
? toolTurnIndexes[toolTurnIndexes.length - keepRecent]
: 0;
let elided = 0;
const compacted = messages.map((message, index) => {