{"asOf":"2026-10-03","doesNotChangeDepotPicks":true,"doesNotChangePriceSort":true,"doesNotChangeFreeIndex":true,"note":"Classification and failure modes are mechanisms. Case studies are included only when the source URL was fetched on 2026-10-03. A capability ceiling is not a company incident. Vendor figures are labeled as that vendor's report.","count":1,"catalogCount":27,"refused":["Replit agent database story (July 2025): The Register URL returned HTTP 403 and no first-party engineering postmortem was fetched. Not indexed.","CanLII HTML for 2024 BCCRT 149 returned a client-side block. The Civil Resolution Tribunal document was fetched instead and is the indexed source.","Cursor agent best-practices post loaded and is a product guide, not a postmortem. Not indexed as an incident. The University of Chicago study it mentions was not fetched.","Cognition 'Introducing Devin' (published 2024-03-12) duplicates the SWE-bench technical report. The report is indexed; the launch post is not a second study.","Anthropic many-shot jailbreaking research page loaded. It is an attack writeup, so it is not indexed and no procedure is stored.","OWASP LLM01:2025 was fetched and is cited on the prompt-injection failure mode only. Attack examples from that page are not copied into a case study.","Calder Lab and similar unsourced production-metric blogs were not fetched and are not indexed.","Google Research abstract for Data Cascades in High-Stakes AI loaded on 2026-10-03 (the abstract says 92% prevalence). Not indexed for data-etl: it is an interview study of ML data practice, not a pipeline job failure. The indexed data-etl study is the dbt Cloud status page."],"studies":[{"id":"langsmith-cert-incident-2025","title":"LangSmith incident on May 1, 2025","year":2025,"studyKind":"production_incident","classIds":["eval-judge","scheduled-ops"],"failureModeIds":["observability-gap"],"lesson":"LangChain's incident note says the US LangSmith API had an elevated error rate for 28 minutes on May 1, 2025, from 14:35 to 15:03 UTC, and that about 55% of API requests failed, including run ingestion. The cause they describe is a leftover DNS record that stopped certificate renewal until the certificate expired. Agent traces can disappear because the trace host's certificate failed, not because the agent reasoned badly.","sourceUrl":"https://www.langchain.com/blog/langsmith-incident-on-may-1-2025","asOf":"2026-10-03","notes":"Fetched LangChain's own incident writeup. This is an observability outage, not a model-behavior incident."}]}