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ProductionTracked since May 20, 2026

Fix Review Style Analyze startup by using configured LangGraph endpoint

This PR fixes production failures in Open-SWE's Review Styles → Analyze flow where runs failed to start with `httpx.ConnectError: All connection attempts failed`. It removes a hardcoded `http://localhost:2024` endpoint in `review_style_jobs.py` and instead resolves the LangGraph client URL from `LANGGRAPH_URL`/`LANGGRAPH_URL_PROD` (same logic as `webapp.py`), with a fallback to `get_client()` when not set.

LangGraph SDKreview_style_jobs.pyLANGGRAPH_URLLANGGRAPH_URL_PROD

What Happened

  • This PR fixes production failures in Open-SWE's Review Styles → Analyze flow where runs failed to start with `httpx.ConnectError: All connection attempts failed`. It removes a hardcoded `http://localhost:2024` endpoint in `review_style_jobs.py` and instead resolves the LangGraph client URL from `LANGGRAPH_URL`/`LANGGRAPH_URL_PROD` (same logic as `webapp.py`), with a fallback to `get_client()` when not set.
  • This PR fixes production failures in Open-SWE's Review Styles → Analyze flow where runs failed to start with `httpx.ConnectError: All connection attempts failed`. It removes a hardcoded `http://localhost:2024` endpoint in `review_style_jobs.py` and instead resolves the LangGraph client URL from `LANGGRAPH_URL`/`LANGGRAPH_URL_PROD` (same logic as `webapp.py`), with a fallback to `get_client()` when not set.
  • 1 evidence item attached for review.

What is Different

Before

Scattered source updates, isolated context, and manual follow-up across multiple feeds.

Now

Corrected the analyzer job client endpoint selection so Review Styles → Analyze no longer targets a fixed local URL in deployments; it now follows the same environment-based LangGraph URL resolution as the web app, with an in-cluster fallback.

Why Track This

Why It Matters

Developers and operators running PR review style checks can start analyze jobs on Open-SWE without silent startup failures, so automated review quality gates are less likely to get blocked by connection errors. The change replaces the fixed localhost endpoint with environment-aware URL resolution (`LANGGRAPH_URL`/`LANGGRAPH_URL_PROD`) and a `get_client()` fallback, but teams should verify each deployment’s LangGraph URL configuration and continue watching for any remaining `Failed to start review style analyzer` logs or analyzer runs that do not complete.

Impact

Developers and operators running PR review style checks can start analyze jobs on Open-SWE without silent startup failures, so automated review quality gates are less likely to get blocked by connection errors. The change replaces the fixed localhost endpoint with environment-aware URL resolution (`LANGGRAPH_URL`/`LANGGRAPH_URL_PROD`) and a `get_client()` fallback, but teams should verify each deployment’s LangGraph URL configuration and continue watching for any remaining `Failed to start review style analyzer` logs or analyzer runs that do not complete.

What To Watch Next

  • Watch whether LangGraph SDK becomes a repeated pattern.
  • Track follow-up changes around AI Code Review.
  • Compare future signals against this evidence trail.
  • Re-check risk flags: langgraph_url_environment_misconfigured, fallback_client_path_not_valid_in_staging.
Open Topic TimelineOpen Technical EventOpen Original Sourcelanggraph_url_environment_misconfigured / fallback_client_path_not_valid_in_staging / deployment_specific_endpoint_regression

Supporting Evidence

GITHUB PULL REQUESTHigh Trust

langchain-ai/open-swe PR #1317: fix: use deployment LangGraph client for review style analysis

Changed Review styles analyzer job client creation to resolve `LANGGRAPH_URL`/`LANGGRAPH_URL_PROD` rather than always using `http://localhost:2024`.