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Fix context management algorithm

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This commit is contained in:
Saoud Rizwan
2024-08-28 20:58:32 -04:00
parent a160e8d67b
commit 3533dfca42
1 changed files with 2 additions and 7 deletions
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9
src/utils/context-management.ts
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@@ -33,20 +33,15 @@ context limits, not as a continuous process.
export function truncateHalfConversation(
messages: Anthropic.Messages.MessageParam[]
): Anthropic.Messages.MessageParam[] {
// Anthropic expects messages to be in user-assistant order, and tool use messages must be followed by tool results. We need to maintain this structure while truncating.
// API expects messages to be in user-assistant order, and tool use messages must be followed by tool results. We need to maintain this structure while truncating.
// Keep the first Task message (likely the most important)
const truncatedMessages = [messages[0]]
// Remove half of user-assistant pairs
const messagesToRemove = Math.floor(messages.length / 4) * 2 // has to be even number
const summaryMessage: Anthropic.Messages.MessageParam = {
role: "assistant",
content: `(${messagesToRemove} messages were truncated to fit within context limits)`,
}
truncatedMessages.push(summaryMessage)
const remainingMessages = messages.slice(messagesToRemove)
const remainingMessages = messages.slice(messagesToRemove + 1) // has to start with assistant message since tool result cannot follow assistant message with no tool use
truncatedMessages.push(...remainingMessages)
return truncatedMessages