{"record":{"id":"2be3a6b79d15a8e6","repo":"odysseus-dev/odysseus","slug":"not-enough-messages-to-compact","errorCode":null,"errorMessage":"Not enough messages to compact","messagePattern":"Not enough messages to compact","errorType":"http","errorClass":"HTTPException","httpStatus":400,"severity":"error","filePath":"routes/session_routes.py","lineNumber":976,"sourceCode":"            finally:\n                db.close()\n\n        except KeyError:\n            raise HTTPException(404, f\"Session {session_id} not found\")\n\n    @router.post(\"/session/{session_id}/compact\")\n    async def compact_session(request: Request, session_id: str):\n        \"\"\"Summarize older messages into one compacted history entry.\"\"\"\n        _verify_session_owner(request, session_id)\n        try:\n            session = session_manager.get_session(session_id)\n        except KeyError:\n            raise HTTPException(404, f\"Session {session_id} not found\")\n        _reject_compact_during_active_run(session_id)\n\n        history = list(session.history or [])\n        if len(history) < 6:\n            raise HTTPException(400, \"Not enough messages to compact\")\n\n        # Keep a small recent tail verbatim. The prior half-chat/20-message\n        # tail made manual compaction look like it did nothing on normal chats.\n        recent_keep = min(8, max(4, len(history) // 4))\n        older = history[:-recent_keep]\n        recent = history[-recent_keep:]\n        if not older:\n            raise HTTPException(400, \"Nothing old enough to compact\")\n\n        from src.context_compactor import SELF_SUMMARY_SYSTEM_PROMPT\n        from src.endpoint_resolver import resolve_endpoint\n        from src.llm_core import llm_call_async\n\n        owner = getattr(session, \"owner\", None) or effective_user(request)\n        url, model, headers = resolve_endpoint(\"utility\", owner=owner)\n        if not url or not model:\n            url, model, headers = session.endpoint_url, session.model, session.headers\n        if not url or not model:","sourceCodeStart":958,"sourceCodeEnd":994,"githubUrl":"https://github.com/odysseus-dev/odysseus/blob/f9235ebbf13f693a6fd29ce70b097f6ec83705bf/routes/session_routes.py#L958-L994","documentation":"Error \"Not enough messages to compact\" thrown in odysseus-dev/odysseus.","triggerScenarios":"Triggered when the corresponding server-side validation or runtime check at the recorded location rejects the request or operation and returns this error message to the caller.","commonSituations":"See trigger scenarios.","solutions":["Add more messages to the session before compacting.","Compaction only makes sense for longer conversations."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"f9235ebbf13f693a6fd29ce70b097f6ec83705bf","analyzedAt":"2026-08-14T21:47:48.359Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}