# LangChain Knowledge Base


## General

- [How to Access LangChain Security & Compliance Information](https://kb.langchain.com/articles/9852244333-how-to-access-langchain-security-compliance-information)
- [How do I prevent unexpected high billing from trace evaluations?](https://kb.langchain.com/articles/2802464447-how-do-i-prevent-unexpected-high-billing-from-trace-evaluations)
- [How do I cancel my LangSmith subscription?](https://kb.langchain.com/articles/9746887421-how-do-i-cancel-my-langsmith-subscription)
- [How do I increase the member limit for my organization?](https://kb.langchain.com/articles/4995148172-how-do-i-increase-the-member-limit-for-my-organization)
- [How do I update my name on a LangChain Academy certificate?](https://kb.langchain.com/articles/9307856652-how-do-i-update-my-name-on-a-langchain-academy-certificate)
- [Create your org in US and need to move to EU?](https://kb.langchain.com/articles/2512545604-how-to-migrate-langsmith-data-from-us-to-eu)
- [LangSmith Data Migration Guide: Traces, Datasets, and Experiments](https://kb.langchain.com/articles/5829492596-how-do-i-set-up-and-troubleshoot-bulk-exports-to-s3)
- [Update Organization Name](https://kb.langchain.com/articles/8296760533-update-organization-name)
- [How do I change my email address in LangSmith?](https://kb.langchain.com/articles/9223968956-how-do-i-change-my-email-address-in-langsmith)
- [How do I submit a guest post on the LangChain blog?](https://kb.langchain.com/articles/1003824400-how-do-i-submit-a-guest-post-on-the-langchain-blog)
- [How do I get a copy of my LangSmith invoice?](https://kb.langchain.com/articles/6317483716-how-do-i-get-a-copy-of-my-langsmith-invoice)
- [How do I get help with billing issues and payment problems?](https://kb.langchain.com/articles/3779255598-how-do-i-get-help-with-billing-issues-and-payment-problems)
- [How do I get access to LangSmith Agent Builder?](https://kb.langchain.com/articles/1588775122-how-do-i-get-access-to-langsmith-agent-builder)
- [Can I enforce Google SSO-only authentication for my organization?](https://kb.langchain.com/articles/9820106567-can-i-enforce-google-sso-only-authentication-for-my-organization)
- [Why am I being charged for agent runs and standby minutes on my development deployment?](https://kb.langchain.com/articles/2626278629-why-am-i-being-charged-for-node-executions-on-my-development-deployment)
- [How do I update billing information on an existing invoice?](https://kb.langchain.com/articles/5832977338-how-do-i-update-billing-information-on-an-existing-invoice)
- [How do I get LangChain to complete security questionnaires for vendor assessments?](https://kb.langchain.com/articles/8555158040-how-do-i-get-langchain-to-complete-security-questionnaires-for-vendor-assessments)
- [What pricing and discounts are available for LangSmith Deployments on the Startup plan?](https://kb.langchain.com/articles/2780309193-what-pricing-and-discounts-are-available-for-langgraph-cloud-deployments-on-the-startup-plan)
- [What should I do when LangSmith is unavailable or showing errors?](https://kb.langchain.com/articles/8196030476-what-should-i-do-when-langsmith-is-unavailable-or-showing-errors)
- [How do I set up ABAC to restrict user access to specific projects?](https://kb.langchain.com/articles/6539560119-how-do-i-set-up-abac-to-restrict-user-access-to-specific-projects)
- [Configuring SAML SSO for Multi-Region LangSmith Deployments](https://kb.langchain.com/articles/4735975616-configuring-saml-sso-for-multi-region-langsmith-deployments)
- [SSO Authentication and Token Issuance in LangSmith](https://kb.langchain.com/articles/8821869322-sso-authentication-and-token-issuance-in-langsmith)
- [How do I send feedback to a different workspace?](https://kb.langchain.com/articles/8322622100-how-do-i-send-feedback-to-a-different-workspace)
- [What happens if I try to delete a custom role that is still assigned?](https://kb.langchain.com/articles/7423725163-how-do-i-delete-custom-roles)
- [How to Open Support Tickets via Portal](https://kb.langchain.com/articles/3788815465-how-to-open-support-tickets-via-portal)
- [How to update your credit card information in LangSmith](https://kb.langchain.com/articles/1645504936-how-to-update-your-credit-card-information-in-langsmith)
- [How do I enable the LangChain Engine?](https://kb.langchain.com/articles/2170992730-how-do-i-enable-the-langchain-engine)
- [Can I downgrade my organization from a paid plan to a free plan?](https://kb.langchain.com/articles/9814546813-can-i-downgrade-my-organization-from-a-paid-plan-to-a-free-plan)

## OSS (LangChain and LangGraph)

- [How to Implement System Prompt Caching in AWS Bedrock using LangChain](https://kb.langchain.com/articles/6345788173-how-do-i-implement-prompt-caching-in-aws-bedrock-with-langchain)
- [LangGraph Thread Deletion Runbook](https://kb.langchain.com/articles/1013695957-langgraph-thread-deletion-runbook)
- [How do I configure checkpointing in LangGraph?](https://kb.langchain.com/articles/1242226068-how-do-i-configure-checkpointing-in-langgraph)
- [MCP Server Runtime in Google Colab / Jupyter Notebook](https://kb.langchain.com/articles/1061688976-mcp-server-runtime-in-google-colab-jupyter-notebook)
- [Isolating Subgraph State When Calling Graphs from Tools](https://kb.langchain.com/articles/6131002418-isolating-subgraph-state-when-calling-graphs-from-tools)
- [How do I connect JIRA, Slack, and Confluence MCPs with LangChain?](https://kb.langchain.com/articles/3473375007-how-do-i-connect-jira-slack-and-confluence-mcps-with-langchain)
- [Why Do Pydantic date Fields Fail in LangGraph State?](https://kb.langchain.com/articles/7196116702-why-do-pydantic-date-fields-fail-in-langgraph-state)
- [Configuring Timeout for init_chat_model in LangChain](https://kb.langchain.com/articles/1557730279-configuring-timeout-for-init-chat-model-in-langchain)
- [Using Local LLM and LangChain Anonymizer for PII Anonymization](https://kb.langchain.com/articles/7720970706-using-local-llm-and-langchain-anonymizer-for-pii-anonymization)
- [LLM Not Following Nested Tool Schema? Use strict=True](https://kb.langchain.com/articles/2731242163-llm-not-following-nested-tool-schema-use-strict-true)
- [How do I retrieve the most recent conversations using PostgresStore search?](https://kb.langchain.com/articles/8125387056-how-do-i-retrieve-the-most-recent-conversations-using-postgresstore-search)
- [LangGraph CLI Not Detecting Custom Graph Classes](https://kb.langchain.com/articles/6744012554-langgraph-cli-not-detecting-custom-graph-classes)
- [Progressive Tool Disclosure with Deep Agents](https://kb.langchain.com/articles/8488719552-progressive-tool-disclosure-with-deep-agents)
- [How do I resolve memory issues when streaming tokens with Deepagents and subagents using JavaScript?](https://kb.langchain.com/articles/8854872772-how-do-i-resolve-memory-issues-when-streaming-tokens-with-deepagents-and-subagents)
- [Attaching per-message context metadata for LLM awareness (LangChain.js)](https://kb.langchain.com/articles/7908986507-attaching-per-message-context-metadata-for-llm-awareness-langchain-js)
- [StreamChunkTimeoutError during async streaming with langchain-openai](https://kb.langchain.com/articles/4695245229-streamchunktimeouterror-during-async-streaming-with-langchain-openai)

## LangSmith Observability

- [How do I use OpenTelemetry (OTEL) with LangSmith?](https://kb.langchain.com/articles/7335403634-how-do-i-use-opentelemetry-otel-with-langsmith)
- [LangSmith-SDK OTEL Mode Memory Leak 9/5/25](https://kb.langchain.com/articles/8193733219-langsmith-sdk-otel-mode-memory-leak)
- [How do I disable or toggle LangSmith tracing during execution?](https://kb.langchain.com/articles/2491399069-how-do-i-disable-or-toggle-langsmith-tracing-during-execution)
- [Why am I being logged out frequently?](https://kb.langchain.com/articles/9344421228-why-am-i-being-logged-out-frequently)
- [Why am I getting "Maximum number of run rules exceeded" error in LangSmith?](https://kb.langchain.com/articles/3084048926-why-am-i-getting-maximum-number-of-run-rules-exceeded-error-in-langsmith)
- [How am I charged for LangSmith Plus plan and where can I view my billing details?](https://kb.langchain.com/articles/6889482332-how-am-i-charged-for-langsmith-plus-plan-and-where-can-i-view-my-billing-details)
- [How do I resolve PostgreSQL "too many clients already" errors in on-prem installed LangSmith?](https://kb.langchain.com/articles/4714082952-how-do-i-resolve-postgresql-too-many-clients-already-errors-in-langsmith)
- [Can I use Anthropic models with MCP Servers in LangChain?](https://kb.langchain.com/articles/8583679930-can-i-use-anthropic-models-with-mcp-servers-in-langchain)
- [High Latency and unresolved runs in LangSmith due to OpenSSL Bug](https://kb.langchain.com/articles/5435208448-high-latency-and-unresolved-runs-in-langsmith-due-to-openssl-bug)
- [How do I delete traces and runs in LangSmith based on custom retention periods?](https://kb.langchain.com/articles/2922388695-how-do-i-delete-traces-and-runs-in-langsmith-based-on-custom-retention-periods)
- [How do I set trace limits in my LangSmith workspace?](https://kb.langchain.com/articles/1066772484-how-do-i-set-trace-limits-in-my-langsmith-workspace)
- [How do I set up LangSmith API key environment variables?](https://kb.langchain.com/articles/3567245886-how-do-i-set-up-langsmith-api-key-environment-variables)
- [Why am I getting service interruption errors when using text search filters?](https://kb.langchain.com/articles/6919527577-why-am-i-getting-service-interruption-errors-when-using-text-search-filters)
- [Why is my trace exploration slow in LangSmith?](https://kb.langchain.com/articles/9719508217-why-is-my-trace-exploration-slow-in-langsmith)
- [How do I filter out traces that contain a specific node name in LangSmith?](https://kb.langchain.com/articles/8185473222-how-do-i-filter-out-traces-that-contain-a-specific-node-name-in-langsmith)
- [How do I archive a prompt instead of deleting it?](https://kb.langchain.com/articles/6404244010-how-do-i-archive-a-prompt-instead-of-deleting-it)
- [How do I disable public sharing for traces in LangSmith?](https://kb.langchain.com/articles/5345880639-how-do-i-disable-public-sharing-for-traces-in-langsmith)
- [How do I prevent traces from mixing between projects during concurrent requests?](https://kb.langchain.com/articles/4784014353-how-do-i-prevent-traces-from-mixing-between-projects-during-concurrent-requests)
- [How does LangSmith handle failures in scheduled bulk export jobs?](https://kb.langchain.com/articles/6978155545-how-does-langsmith-handle-failures-in-scheduled-bulk-export-jobs)
- [How do I configure LangSmith pricing match patterns for AWS Bedrock inference profiles?](https://kb.langchain.com/articles/4241511543-how-do-i-configure-langsmith-pricing-match-patterns-for-aws-bedrock-inference-profiles)
- [PagerDuty Alert Severity Not Respecting Configuration](https://kb.langchain.com/articles/8222693126-pagerduty-alert-severity-not-respecting-configuration)
- [Why are my traces being automatically upgraded to extended retention?](https://kb.langchain.com/articles/3206725817-why-are-my-traces-being-automatically-upgraded-to-extended-retention)
- [Merging LangSmith Runs from Remote Graph](https://kb.langchain.com/articles/9499391881-merging-langsmith-runs-from-remote-graph)
- [What is LangSmith?](https://kb.langchain.com/articles/8854797554-what-is-langsmith)
- [How do I get monthly trace costs by workspace using the API?](https://kb.langchain.com/articles/2360627821-how-do-i-get-monthly-trace-costs-by-workspace-using-the-api)
- [How do I connect Claude Code/Cursor to LangSmith Cloud for trace investigation?](https://kb.langchain.com/articles/6059731320-how-do-i-connect-claude-computer-cursor-to-langsmith-cloud-for-trace-investigation)
- [What are the minimum permissions required for bulk export jobs?](https://kb.langchain.com/articles/7650316349-what-are-the-minimum-permissions-required-for-bulk-export-jobs)
- [Can I recover deleted traces in LangSmith?](https://kb.langchain.com/articles/8458147520-can-i-recover-deleted-traces-in-langsmith)
- [How to trace agent activity inside a LangSmith sandbox](https://kb.langchain.com/articles/2533314105-how-to-trace-agent-activity-inside-a-langsmith-sandbox)
- [Routing LangSmith Alerts to Slack](https://kb.langchain.com/articles/9581596180-routing-langsmith-alerts-to-slack)
- [Multi-tenant LangSmith: workspaces vs. projects for per-customer agents](https://kb.langchain.com/articles/3714335605-multi-tenant-langsmith-workspaces-vs-projects-for-per-customer-agents)
- [Overriding the Parquet compression codec for LangSmith bulk exports](https://kb.langchain.com/articles/2698867895-overriding-the-parquet-compression-codec-for-langsmith-bulk-exports)
- [Tracing project disappears from Tracing tab after an evaluation script upsert](https://kb.langchain.com/articles/5960183996-tracing-project-disappears-from-tracing-tab-after-an-evaluation-script-upsert)
- [How to Access and Export the LangSmith Usage Report](https://kb.langchain.com/articles/3719374006-how-to-access-and-export-the-langsmith-usage-report)

## LangSmith Evaluation

- [Can I reuse evaluators across multiple LangSmith tracing projects?](https://kb.langchain.com/articles/1660800411-can-i-reuse-evaluators-across-multiple-langsmith-tracing-projects)
- [LangSmith experiment page is slow to load or not render fully with large datasets](https://kb.langchain.com/articles/3885864514-langsmith-experiment-page-is-slow-to-load-and-crashes-with-large-datasets)
- [Tracing a(evaluate())LangGraph Evaluations in LangSmith](https://kb.langchain.com/articles/9427131058-tracing-a-evaluate-langgraph-evaluations-in-langsmith)
- [Why did my evaluator token usage and costs increase after upgrading LangSmith SDK?](https://kb.langchain.com/articles/7643067789-why-did-my-evaluator-token-usage-and-costs-increase-after-upgrading-langsmith)
- [Evaluator Creation with LiteLLM Proxy - Missing API Key Error](https://kb.langchain.com/articles/2378929317-evaluator-creation-with-litellm-proxy-missing-api-key-error)
- [How do I prevent HTML tags from being escaped in prompts and evaluations?](https://kb.langchain.com/articles/6535752936-how-do-i-prevent-html-tags-from-being-escaped-in-prompts-and-evaluations)
- [Model Drift Detection and Bias/Fairness Evaluation in LangSmith](https://kb.langchain.com/articles/2310316164-model-drift-detection-and-bias-fairness-evaluation-in-langsmith)
- [How do I create LLM-as-judge evaluators programmatically via API?](https://kb.langchain.com/articles/1714979062-how-do-i-create-llm-as-judge-evaluators-programmatically-via-api)
- [LangSmith LLM evaluators scoring 0.0 when root run has no messages](https://kb.langchain.com/articles/2183380096-langsmith-llm-evaluators-scoring-0-0-when-root-run-has-no-messages)
- [Detecting experiment completion and fetching final scores in LangSmith](https://kb.langchain.com/articles/1581107512-detecting-experiment-completion-and-fetching-final-scores-in-langsmith)

## LangSmith Deployment

- [LangGraph Dev Deployment Disk Usage FAQ](https://kb.langchain.com/articles/9273009893-langgraph-dev-deployment-disk-usage-faq)
- [Understanding Checkpointers, Databases, API Memory, and TTL](https://kb.langchain.com/articles/6253531756-understanding-checkpointers-databases-api-memory-and-ttl)
- [What are the hardware specifications and resource limits for LangSmith Deployments?](https://kb.langchain.com/articles/9065388713-what-are-the-hardware-specifications-and-resource-limits-for-langgraph-cloud-deployments)
- [Why is token-by-token streaming not working after upgrading LangGraph?](https://kb.langchain.com/articles/7150806184-why-is-token-by-token-streaming-not-working-after-upgrading-langgraph)
- [How do I resolve ChatGoogleGenerativeAI blocking errors in LangGraph?](https://kb.langchain.com/articles/3873263156-how-do-i-resolve-chatgooglegenerativeai-blocking-errors-in-langgraph)
- [How do I resolve ChatGoogleGenerativeAI blocking errors in LangGraph?](https://kb.langchain.com/articles/8574277609-how-do-i-resolve-chatgooglegenerativeai-blocking-errors-in-langgraph)
- [Adding FastAPI dependency for custom middleware in LangSmith Deployment](https://kb.langchain.com/articles/7593416758-adding-fastapi-dependency-for-custom-middleware-in-langgraph-platform)
- [How do I deploy an MCP server on LangSmith Deployments with my agent?](https://kb.langchain.com/articles/8743137454-how-do-i-deploy-an-mcp-server-on-langsmith-deployments-with-my-agent)
- [How do I use the LangSmith Control Plane API to manage deployments?](https://kb.langchain.com/articles/8184800662-how-do-i-use-the-langgraph-platform-control-plane-api-to-manage-deployments)
- [Why is my LangSmith agent queue Deployment timing out after 600 seconds?](https://kb.langchain.com/articles/7898522976-why-is-my-queue-deployment-timing-out-after-600-seconds)
- [How do I resolve CancelledError in LangGraph long-running operations?](https://kb.langchain.com/articles/7667944497-how-do-i-resolve-cancellederror-in-langgraph-long-running-operations)
- [LangSmith Deployments agent is running, but the UI shows it as “Unsuccessful”](https://kb.langchain.com/articles/8394994213-langsmith-deployments-agent-is-running-but-the-ui-shows-it-as-unsuccessful)
- [Why are my agent threads getting deleted automatically?](https://kb.langchain.com/articles/7993792111-why-are-my-threads-being-marked-as-temporary-and-getting-deleted-automatically)
- [LangSmith Deployments not working with Valkey](https://kb.langchain.com/articles/2265174426-why-are-my-langgraph-requests-hanging-when-using-aws-elasticache-with-valkey)
- [How to Handle Redis Memory Issues in LangGraph Deployments](https://kb.langchain.com/articles/8357426042-how-to-handle-redis-memory-issues-in-langgraph-deployments)
- [How to Create a Locked-Down Deployment with Restricted Access](https://kb.langchain.com/articles/5382256129-how-to-create-a-locked-down-deployment-with-restricted-access)
- [Managing State Schema Changes Across LangSmith Deployment Versions](https://kb.langchain.com/articles/1785884356-managing-state-schema-changes-across-langsmith-deployment-versions)
- [Sync vs Async in LangSmith Deployment: BG_JOB_ISOLATED_LOOPS + invoke vs ainvoke](https://kb.langchain.com/articles/7101951234-sync-vs-async-in-langsmith-deployment-bg-job-isolated-loops-invoke-vs-ainvoke)
- [Why is my LangSmith deployment entering a "zombie state" where it accepts requests but stops responding?](https://kb.langchain.com/articles/7079938307-why-is-my-langgraph-deployment-entering-a-zombie-state-where-it-accepts-requests-but-stops-responding)
- [How to setup LangGraph build with private repositories and uv](https://kb.langchain.com/articles/2604599114-how-to-setup-langgraph-build-with-private-repositories-and-uv)
- [How do I disable thinking tokens in LangSmith API calls?](https://kb.langchain.com/articles/2012832443-how-do-i-disable-thinking-tokens-in-langsmith-api-calls)
- [How Thread TTL Works with the "Delete" Strategy](https://kb.langchain.com/articles/9574139807-how-thread-ttl-works-with-the-delete-strategy)
- [How do I resolve PostgreSQL connection pool issues causing 503 errors and high latency?](https://kb.langchain.com/articles/4412893639-how-do-i-resolve-postgresql-connection-pool-issues-causing-503-errors-and-high-latency)
- [Rotating a LangGraph deployment API key (self-hosted)](https://kb.langchain.com/articles/5762076496-rotating-a-langgraph-deployment-api-key-self-hosted)
- [How to connect Atlassian Jira/Confluence in Fleet](https://kb.langchain.com/articles/8095030919-how-to-connect-atlassian-jira-confluence-in-fleet)

## SDKs and APIs

- [How do I export annotated traces in bulk from LangSmith?](https://kb.langchain.com/articles/9958349143-how-do-i-export-annotated-traces-in-bulk-from-langsmith)
- [How do I trace Vercel AI SDK calls with LangSmith?](https://kb.langchain.com/articles/9620089182-how-do-i-trace-vercel-ai-sdk-calls-with-langsmith)
- [How do I use LangSmith tracing with Cloudflare Workers?](https://kb.langchain.com/articles/1885761495-how-do-i-use-langsmith-tracing-with-cloudflare-workers)
- [How do I filter runs by name using the LangSmith SDK?](https://kb.langchain.com/articles/5601207552-how-do-i-filter-runs-by-name-using-the-langsmith-sdk)
- [How do I filter runs by multiple run IDs using tree filters?](https://kb.langchain.com/articles/2574288399-how-do-i-filter-runs-by-multiple-run-ids-using-tree-filters)
- [Can I reopen a run after calling patch() to write additional data?](https://kb.langchain.com/articles/9964614152-can-i-reopen-a-run-after-calling-patch-to-write-additional-data)
- [Why do I see inconsistent output formats for the same agent across different traces?](https://kb.langchain.com/articles/2041161407-why-do-i-see-inconsistent-output-formats-for-the-same-agent-across-different-traces)
- [Why am I getting "Failed to send compressed multipart ingest" errors in LangSmith?](https://kb.langchain.com/articles/9901468881-why-am-i-getting-failed-to-send-compressed-multipart-ingest-errors-in-langsmith)
- [Preserving Trace Hierarchy with Manual RunTree Creation](https://kb.langchain.com/articles/9515178454-preserving-trace-hierarchy-with-manual-runtree-creation)
- [Missing Runs in LangSmith Experiment View with Concurrent Evaluations](https://kb.langchain.com/articles/8223468578-missing-runs-in-langsmith-experiment-view-with-concurrent-evaluations)
- [Why am I getting 403 Forbidden errors when using a personal lsv2 API key with the LangSmith Client?](https://kb.langchain.com/articles/8675798054-why-am-i-getting-403-forbidden-errors-when-using-a-personal-lsv2-api-key-with-the-langsmith-client)
- [Attaching feedback to OTel-ingested traces with the LangSmith SDK](https://kb.langchain.com/articles/9658171933-attaching-feedback-to-otel-ingested-traces-with-the-langsmith-sdk)
- [Pointing the LangSmith SDK and CLI at a non-US regional endpoint](https://kb.langchain.com/articles/6271700631-pointing-the-langsmith-sdk-and-cli-at-a-non-us-regional-endpoint)
- [Slow list_threads and read_thread calls on large LangSmith projects](https://kb.langchain.com/articles/2122147512-slow-list-threads-and-read-thread-calls-on-large-langsmith-projects)

## LangSmith Studio

- [LangSmith Studio URL Redirects to Error Page](https://kb.langchain.com/articles/4270790436-langsmith-studio-url-redirects-to-error-page)
- [LangSmith Studio vs Agent Chat UI: When to Use What](https://kb.langchain.com/articles/1353449293-langsmith-studio-vs-agent-chat-ui)
- [Private Network Access Blocking LangSmith Studio Connection](https://kb.langchain.com/articles/1897181200-private-network-access-blocking-langsmith-studio-connection)
- [How do I run LangGraph Studio in dev mode in Self-hosted LangSmith?](https://kb.langchain.com/articles/5972390316-why-am-i-being-redirected-to-the-login-page-when-using-langgraph-studio-in-dev-mode)

## Self Hosted

- [Can I Self-Deploy OAP without supabase?](https://kb.langchain.com/articles/1372835782-can-i-self-deploy-oap-without-supabase)
- [Deploying LangSmith & LangGraph on Kubernetes: A Practical Q&A](https://kb.langchain.com/articles/3969485352-deploying-langsmith-langgraph-on-kubernetes-a-practical-q-a)
- [How do I find trace IDs in LangSmith error logs?](https://kb.langchain.com/articles/2197968694-how-do-i-find-trace-ids-in-langsmith-error-logs)
- [LangSmith upgrade fails with SSL certificate verification error when connecting to Azure Cache for Redis](https://kb.langchain.com/articles/7558740603-langsmith-helm-upgrade-fails-with-ssl-certificate-verification-error-when-connecting-to-azure-cache-for-redis)
- [Why am I getting a parsing token error when upgrading LangSmith?](https://kb.langchain.com/articles/7019615393-why-am-i-getting-a-token-parsing-error-when-upgrading-langsmith)
- [Resolving LangGraph and LangSmith version compatibility issues in production](https://kb.langchain.com/articles/5102702588-resolving-langgraph-and-langsmith-version-compatibility-issues-in-production)
- [Why are some experiment runs missing when processing large datasets in self-hosted LangSmith?](https://kb.langchain.com/articles/3506757366-why-are-some-experiment-runs-missing-when-processing-large-datasets-in-self-hosted-langsmith)
- [ClickHouse: Drop Old Data](https://kb.langchain.com/articles/2379935803-clickhouse-drop-old-data)
- [How do I add existing organization members to new workspaces programmatically via API?](https://kb.langchain.com/articles/5797508505-how-do-i-add-existing-organization-members-to-new-workspaces-programmatically-via-api)
- [How do I resolve Redis disk space issues in self-hosted LangSmith?](https://kb.langchain.com/articles/5370519454-how-do-i-resolve-redis-disk-space-issues-in-self-hosted-langsmith)
- [Managing ClickHouse Storage](https://kb.langchain.com/articles/2929899751-managing-clickhouse-storage)
- [Can I use an external database cluster to host multiple self-hosted LangSmith instances?](https://kb.langchain.com/articles/5989664339-can-i-use-an-external-database-cluster-to-host-multiple-self-hosted-langsmith-instances)
- [How do I resolve ClickHouse migration errors after upgrading LangSmith?](https://kb.langchain.com/articles/6463985661-how-do-i-resolve-clickhouse-migration-errors-after-upgrading-langsmith)
- [How do I resolve "too many connections" PostgreSQL errors when scaling platform instances?](https://kb.langchain.com/articles/9651943867-how-do-i-resolve-too-many-connections-postgresql-errors-when-scaling-platform-instances)
- [Best practices for scaling Self-Hosted LangSmith](https://kb.langchain.com/articles/5142502915-best-practices-for-scaling-self-hosted-langsmith)
- [How to setup path-based routing for self-hosted LangSmith](https://kb.langchain.com/articles/2352997668-how-to-setup-path-based-routing-for-self-hosted-langsmith)
- [How to setup private container registry authentication for LangGraph agent deployments](https://kb.langchain.com/articles/8606755009-how-to-setup-private-container-registry-authentication-for-langgraph-cloud-agent-deployments)
- [How do I obtain a self-hosted LangSmith license key?](https://kb.langchain.com/articles/7011309930-how-do-i-obtain-a-self-hosted-langsmith-license-key)
- [Productionizing and Scaling Self-Hosted LangSmith - Best Practices](https://kb.langchain.com/articles/8478795211-productionizing-and-scaling-self-hosted-langsmith-best-practices)
- [Streaming Failures When Using Shared Custom Redis Instances](https://kb.langchain.com/articles/3842219806-streaming-failures-when-using-shared-custom-redis-instances)
- [How do I enable KMS encryption for S3 storage in self-hosted LangSmith?](https://kb.langchain.com/articles/9381186430-how-do-i-enable-kms-encryption-for-s3-storage-in-self-hosted-langsmith)
- [Why are my agent health checks failing with GCP Gateway API on GKE?](https://kb.langchain.com/articles/3603461301-why-are-my-agent-health-checks-failing-with-gcp-gateway-api-on-gke)
- [Cleaning ClickHouse System Log Tables](https://kb.langchain.com/articles/9482219057-cleaning-clickhouse-system-log-tables)
- [Session Timeout Configuration for LangSmith Self-Hosted](https://kb.langchain.com/articles/9515017706-session-timeout-configuration-for-langsmith-self-hosted)
- [Why am I getting 429 Rate Limit Errors during load testing on self-hosted LangSmith?](https://kb.langchain.com/articles/8364157755-why-am-i-getting-429-rate-limit-errors-during-load-testing-on-self-hosted-langsmith)
- [Resolving common issues when upgrading LangSmith Helm chart from 0.11.x to 0.12.x?](https://kb.langchain.com/articles/5255204348-resolving-common-issues-when-upgrading-langsmith-helm-chart-from-0-11-x-to-0-12-x)
- [How do I resolve S3 PutObject access denied errors when enabling LangSmith blob storage with KMS encryption requirements?](https://kb.langchain.com/articles/6337418324-how-do-i-resolve-s3-putobject-access-denied-errors-when-enabling-langsmith-blob-storage-with-kms-encryption-requirements)
- [Can I use Azure Redis Enterprise with LangSmith and what configuration is required?](https://kb.langchain.com/articles/1446698224-can-i-use-azure-redis-enterprise-with-langsmith-and-what-configuration-is-required)
- [Enabling Organization Invites](https://kb.langchain.com/articles/7950547485-enabling-organization-invites)
- [How do I resolve "AccessDenied: Not authorized to perform sts:AssumeRoleWithWebIdentity" error when upgrading to LangSmith v0.13?](https://kb.langchain.com/articles/6533929435-how-do-i-resolve-accessdenied-not-authorized-to-perform-sts-assumerolewithwebidentity-error-when-upgrading-to-langsmith-v0-13)
- [Enabling Audit Logs in Self-Hosted LangSmith](https://kb.langchain.com/articles/5478528798-enabling-audit-logs-in-self-hosted-langsmith)
- [Adding Admin Permissions via Direct SQL in Self-Hosted LangSmith](https://kb.langchain.com/articles/8213802405-adding-admin-permissions-via-direct-sql-in-self-hosted-langsmith)
- [Multi-Geo Data Residency for Self-Hosted LangSmith](https://kb.langchain.com/articles/4777992410-multi-geo-data-residency-for-self-hosted-langsmith)
- [Troubleshooting 405 Errors When Deleting or Updating Cron Jobs on Self-Hosted LangSmith Deployment](https://kb.langchain.com/articles/6320430441-troubleshooting-405-erro-when-deleting-or-updating-cron-jobs-on-self-hosted-langsmith-deployment)
- [Migrating Self-Hosted LangSmith/LangSmith Deployments to a New Kubernetes Cluster](https://kb.langchain.com/articles/4037157579-migrating-self-hosted-langsmith-langsmith-deployments-to-a-new-kubernetes-cluster)
- [Troubleshooting Failed Postgres Migrations](https://kb.langchain.com/articles/4430328116-troubleshooting-failed-postgres-migrations)
- [Determining per Workspace storage usage in ClickHouse](https://kb.langchain.com/articles/5345225835-determining-per-workspace-storage-usage-in-clickhouse)
- [How do I resolve "too many rows in result set" errors causing 403 Forbidden on all LangSmith tabs?](https://kb.langchain.com/articles/6240595579-how-do-i-resolve-too-many-rows-in-result-set-errors-causing-403-forbidden-on-all-langsmith-tabs)
- [Troubleshooting Agent Builder, Insights (clio) Startup & DNS Failures](https://kb.langchain.com/articles/1444899856-troubleshooting-agent-builder-insights-clio-startup-dns-failures)
- [Platform-Backend CrashLoopBackOff: "Failed to Initialize OpenID Connect Provider" (404)](https://kb.langchain.com/articles/8458967696-platform-backend-crashloopbackoff-failed-to-initialize-openid-connect-provider-404)
- [Why are Input/Output filters missing in my LangSmith self-hosted deployment?](https://kb.langchain.com/articles/8873915291-why-are-input-output-filters-missing-in-my-langsmith-self-hosted-deployment)
- [How do I resolve Gateway API compatibility issues with LangSmith on GKE?](https://kb.langchain.com/articles/9848553652-how-do-i-resolve-gateway-api-compatibility-issues-with-langsmith-on-gke)
- [Why is the Fleet dropdown not appearing in LangSmith?](https://kb.langchain.com/articles/5208042584-why-is-the-agent-builder-fleet-dropdown-not-appearing-in-langsmith)
- [Why is Fleet showing a blank page after enabling ArgoCD?](https://kb.langchain.com/articles/6067158823-why-is-agent-builder-showing-a-blank-page-after-upgrading-langsmith)
- [Backing up and Restoring Clickhouse Data](https://kb.langchain.com/articles/2765337769-backing-up-and-restoring-clickhouse-data)
- [Audit Logs Stop Working After Upgrading to LangSmith v0.13.37](https://kb.langchain.com/articles/4892354099-audit-logs-stop-working-after-upgrading-to-langsmith-v0-13-37)
- [Enabling LangGraph Deployments on Self-Hosted LangSmith (Hybrid / Full Platform)](https://kb.langchain.com/articles/1764819633-enabling-langgraph-deployments-on-self-hosted-langsmith-hybrid-full-platform)
- [LangSmith Go Backend panics on startup with Copy Blob health check failure against firewall-restricted Azure Blob Storage](https://kb.langchain.com/articles/1567133993-langsmith-go-backend-panics-on-startup-with-copy-blob-health-check-failure-against-firewall-restricted-azure-blob-storage)
- [Reducing Downtime During LangSmith Helm Upgrades](https://kb.langchain.com/articles/4252931498-reducing-downtime-during-langsmith-helm-upgrades)
- [Azure Entra ID SCIM User Deprovisioning](https://kb.langchain.com/articles/3694208728-azure-entra-id-scim-user-deprovisioning-behavior)
- [How do I configure SSL certificates for LangSmith Playground with custom model providers?](https://kb.langchain.com/articles/2682537770-how-do-i-configure-ssl-certificates-for-langsmith-playground-with-custom-model-providers)
- [What are the differences between internal and external Redis in LangSmith deployments?](https://kb.langchain.com/articles/4277172285-what-are-the-differences-between-internal-and-external-redis-in-langsmith-deployments)
- [Can I run both Ingress and Gateway API (HTTPRoute) simultaneously during migration on Self-Hosted LangSmith?](https://kb.langchain.com/articles/2997619406-can-i-run-both-ingress-and-gateway-api-httproute-simultaneously-during-migration)
- [Bundled Agent Deployment Stuck in DEPLOY_FAILED](https://kb.langchain.com/articles/5428922772-bundled-agent-deployment-stuck-in-deploy-failed)
- [Migrating LangSmith Deployments Control Plane Fleet to Standalone Fleet](https://kb.langchain.com/articles/8306585004-migrating-langsmith-deployments-control-plane-fleet-to-standalone-fleet)
- [Upgrading Self-Hosted LangSmith to v0.15: Fleet rename and migration guide](https://kb.langchain.com/articles/9482666900-upgrading-self-hosted-langsmith-to-v0-15-fleet-rename-and-migration-guide)
- [Self-hosted LangSmith on Kubernetes: sizing, multi-stage layout, CPU floor](https://kb.langchain.com/articles/7547514029-self-hosted-langsmith-on-kubernetes-sizing-multi-stage-layout-cpu-floor)
- [Enabling Fleet and Polly on self-hosted LangSmith after a v0.15 upgrade](https://kb.langchain.com/articles/8178735599-enabling-fleet-and-polly-on-self-hosted-langsmith-after-a-v0-15-upgrade)
- [Enabling Fleet and Polly on self-hosted LangSmith after v0.15 upgrade](https://kb.langchain.com/articles/5401857426-enabling-fleet-and-polly-on-self-hosted-langsmith-after-v0-15-upgrade)
- [LangSmith bulk export OOM: tuning buffer size and concurrency](https://kb.langchain.com/articles/2860173587-langsmith-bulk-export-oom-tuning-buffer-size-and-concurrency)
- [ClickHouse disk and memory pressure on self-hosted LangSmith](https://kb.langchain.com/articles/4285746117-clickhouse-disk-and-memory-pressure-on-self-hosted-langsmith)
- [Code evaluator creation fails when Aqua injects LD_PRELOAD into ace-backend](https://kb.langchain.com/articles/4992865553-code-evaluator-creation-fails-when-aqua-injects-ld-preload-into-ace-backend)
- [Slow Align Evaluator and experiment views: enable static-asset caching](https://kb.langchain.com/articles/6282597657-slow-align-evaluator-and-experiment-views-enable-static-asset-caching)
- [Orphaned pods after deleting a self-hosted LangGraph deployment](https://kb.langchain.com/articles/5192216921-orphaned-pods-after-deleting-a-self-hosted-langgraph-deployment)

## Troubleshooting

- [How to Generate a HAR File for Troubleshooting](https://kb.langchain.com/articles/9042697994-how-to-generate-a-har-file-for-troubleshooting)
- [What does the "incomplete" status mean in LangSmith traces?](https://kb.langchain.com/articles/1687253238-what-does-the-incomplete-status-mean-in-langsmith-traces)
- [Why am I having trouble logging in to LangSmith via SSO?](https://kb.langchain.com/articles/5799181893-why-am-i-having-trouble-logging-in-to-langsmith-via-sso)
- [How to share diagnostics information from self-hosted instances?](https://kb.langchain.com/articles/2087799075-how-to-share-diags)
- [Can deleted LangSmith projects be restored?](https://kb.langchain.com/articles/3557520564-can-deleted-langsmith-projects-be-restored)
- [Troubleshooting: Atlassian Jira MCP Server tools not loading in Fleet](https://kb.langchain.com/articles/1955122485-how-to-set-up-the-atlassian-jira-mcp-server-in-fleet)

## Security

- [External JavaScript Libraries and SRI](https://kb.langchain.com/articles/9734236024-external-javascript-libraries-and-sri)
- [Vulnerability Management & Scanning Policies](https://kb.langchain.com/articles/9396506813-vulnerability-management-scanning-policies)


- [Why am I getting deployment timeouts or failures in LangSmith Deployment?](https://kb.langchain.com/articles/5539840579-why-am-i-getting-deployment-timeouts-or-failures-in-langgraph-platform)
- [Deploy Agent Builder on self-hosted LangSmith when using additional Dataplanes](https://kb.langchain.com/articles/5436738584-deploy-agent-builder-on-self-hosted-langsmith-when-using-additional-dataplanes)
- [Exporting Self-Hosted LangSmith Usage Data](https://kb.langchain.com/articles/3229479413-exporting-self-hosted-langsmith-usage-data)
- [Managing Model Configurations via the API](https://kb.langchain.com/articles/4711692847-managing-model-configurations-via-the-api)