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About the Observability & Evals category
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0
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286
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April 22, 2025
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Built a tamper-evident audit log for LangChain agents (early users welcome)
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0
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4
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January 22, 2026
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LangSmith API Error: 403 Forbidden - org_scoped_key_requires_workspace
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1
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723
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January 22, 2026
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Passing variable to multi-turn conversation eval prompt, coming as empty during execution
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2
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14
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January 21, 2026
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Why does Polly require an Anthropic API key even when choosing an OpenAI model?
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1
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48
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January 15, 2026
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Handling unexpected latency in langchain pipelines, any ideas?
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2
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4
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January 22, 2026
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EU LangSmith tracing: runs dropped over 20MB + missing image previews after attachment chunking
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3
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48
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January 13, 2026
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Full experiment runs only 20 examples
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11
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781
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January 4, 2026
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In the new LLM evaluator, prompts do not support obtaining the last element in the actual output list.
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3
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54
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December 17, 2025
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Running into basic access problem with new key created
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3
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1316
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December 16, 2025
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Best way to enforce strict puzzle-like constraints in langchain?
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1
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37
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December 16, 2025
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Can you use LangSmith with a Personal Account?
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10
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122
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December 16, 2025
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Cannot create S3 bulk export destination - KMS GenerateDataKey error
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2
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69
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December 7, 2025
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The streaming runs always get stuck indefinitely
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1
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73
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December 3, 2025
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Alert triggering and ignoring filters
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8
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153
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December 2, 2025
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Not able to run experiment on deployed app
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1
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99
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November 25, 2025
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How to use MiddleWare after_model
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1
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96
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November 22, 2025
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Image registration issue
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1
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60
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November 18, 2025
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[Run Experiment] -> Dataset is missing required fields: messages
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1
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203
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November 18, 2025
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How do you update or delete Feedback Tags?
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3
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303
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November 18, 2025
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How to delete traces or runs?
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9
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1039
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November 17, 2025
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Experiment "Failed to Run"
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5
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163
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November 13, 2025
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Send to only OTEL collector: Authentication failed for https://api.smith.langchain.com/runs/multipart. HTTPError('401 Client Error: Unauthorized for url: https://api.smith.langchain.com/runs/multipart'
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1
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91
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November 13, 2025
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Experiments in LangGraph Studio Show “Completed” but No Runs Available
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4
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227
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November 12, 2025
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built something so my agents can learn from their own mistakes
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0
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44
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November 11, 2025
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How do I filter traces to a sub-agent in a multi-agent system?
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1
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111
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November 1, 2025
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Custom Code online evals on multi-agent system traces not seeing sub-agent tool calls (or any ids or details about Child Runs)
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1
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116
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October 30, 2025
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How to achieve nested tracing across SERVERS
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3
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114
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October 29, 2025
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How to view RunnableConfig state in LangGraph traces?
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0
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99
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October 22, 2025
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GPT-5 unable to run in LangSmith Playground
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4
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291
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October 21, 2025
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