Skip to content

🤖 fix: omit providerMetadata from compaction summary to fix context display #762

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ethanndickson merged 1 commit into from
Nov 26, 2025
Merged

🤖 fix: omit providerMetadata from compaction summary to fix context display #762

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 3 additions & 2 deletions src/node/services/compactionHandler.test.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -255,7 +255,7 @@ describe("CompactionHandler", () => {
model: "claude-3-5-sonnet-20241022",
usage,
duration: 2000,
providerMetadata: { foo: "bar" },
providerMetadata: { anthropic: { cacheCreationInputTokens: 50000 } },
systemMessageTokens: 100,
});
await handler.handleCompletion(event);
Expand All @@ -266,14 +266,15 @@ describe("CompactionHandler", () => {
});
expect(summaryEvent).toBeDefined();
const sevt = summaryEvent?.data.message as MuxMessage;
// providerMetadata is omitted to avoid inflating context with pre-compaction cacheCreationInputTokens
expect(sevt.metadata).toMatchObject({
model: "claude-3-5-sonnet-20241022",
usage,
duration: 2000,
providerMetadata: { foo: "bar" },
systemMessageTokens: 100,
compacted: true,
});
expect(sevt.metadata?.providerMetadata).toBeUndefined();
});

it("should emit stream-end event to frontend", async () => {
Expand Down
6 changes: 4 additions & 2 deletions src/node/services/compactionHandler.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -112,7 +112,10 @@ export class CompactionHandler {
}
const deletedSequences = clearResult.data;

// Create summary message with metadata
// Create summary message with metadata.
// We omit providerMetadata because it contains cacheCreationInputTokens from the
// pre-compaction context, which inflates context usage display. The historicalUsage
// field preserves full cost accounting from pre-compaction messages.
const summaryMessage = createMuxMessage(
`summary-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`,
"assistant",
Expand All @@ -123,7 +126,6 @@ export class CompactionHandler {
model: metadata.model,
usage: metadata.usage,
historicalUsage,
providerMetadata: metadata.providerMetadata,
duration: metadata.duration,
systemMessageTokens: metadata.systemMessageTokens,
muxMetadata: { type: "normal" },
Expand Down