> ## Documentation Index
> Fetch the complete documentation index at: https://docs.langchain.com/llms.txt
> Use this file to discover all available pages before exploring further.
# LangSmith Cloud changelog
> Weekly updates to LangSmith Cloud
Weekly updates to [LangSmith Cloud](/langsmith/observability) and [LangSmith Fleet](/langsmith/fleet).
**Subscribe**: This changelog includes an [RSS feed](https://docs.langchain.com/langsmith/product-changelog/rss.xml) that can integrate with [Slack](https://slack.com/help/articles/218688467-Add-RSS-feeds-to-Slack), [email](https://zapier.com/apps/email/integrations/rss/1441/send-new-rss-feed-entries-via-email), Discord bots like [Readybot](https://readybot.io/) or [RSS Feeds to Discord Bot](https://rss.app/en/bots/rssfeeds-discord-bot), and other subscription tools.
If you use self-hosted LangSmith, see the [self-hosted changelog](/langsmith/self-hosted-changelog) for updates.
## Observability and evaluations
### Engine
* [Engine](/langsmith/engine) now shows only project-level spend in project view, so org-wide spend stays in the org settings surface.
* [Engine](/langsmith/engine) now keeps the Slack issue-alert deck pinned above the scrolling issues list, so the callout stays visible as you browse. *(Needs review: gated behind `langsmith_slack_app`, confirm GA before publishing.)*
### Datasets and experiments
The experiments table now displays loading progress bars showing the number of runs completed and evaluated, and experiments that predate this feature show a placeholder progress bar.
* [Dashboards](/langsmith/dashboards) now support time series bar and line charts backed by the v2 chart API, so monitored metrics can use the newer chart type.
* Categorical feedback now shows derived percentages in experiment tables, so pass/fail metrics are easier to scan.
### Prompts and playground
* [Playground](/langsmith/playground-model-providers) now mints OAuth bearers end to end for OAuth-enabled presets, so long-running batches and streams keep working.
## Sandboxes
* [Sandbox auth proxy](/langsmith/sandbox-auth-proxy) now supports GCP auth flows, so sandbox workloads can reach Google APIs through the proxy.
## Admin and billing
### Administration
* [Organization settings](/langsmith/administration-overview) no longer expose the hidden LCU rate-card admin modal or tenantless routes, so rate-card management stays behind the scenes.
## Fixes
* The Engine trial modal no longer shows the rough-math LCU bullet, so the pricing copy is less misleading.
## Observability and evaluations
### Automations
* [Run rule](/langsmith/rules) webhook payloads now include a trace deep link for each run, so downstream systems can jump straight back to the trace.
### Engine
* Per-workspace [Engine](/langsmith/engine) spend is now generally available: you can view LCU and USD spend directly on the Engine settings page, including session-level spend.
* The Engine settings page now surfaces additional Engine details in one place.
* You can rotate [Engine issue-board webhook](/langsmith/engine-webhooks) signing secrets from both the API and the webhook settings UI.
* The Engine issues list adds a sort option by trace count.
### Datasets and experiments
* A new out-of-the-box [Assertions evaluator](/langsmith/assertions) scores outputs against an explicit list of criteria specified in the reference output, and an Assertions rule is auto-attached when you add assertion-style examples to a dataset.
* Evaluator metrics are improved in the experiment detail, [comparison](/langsmith/compare-experiment-results), and global experiments tables.
### Prompts and playground
* The [Playground](/langsmith/playground-model-providers) supports Amazon Bedrock API key authentication, letting you authenticate with a bearer token instead of AWS credentials.
### Tracing
* The [trace view](/langsmith/view-traces) now shows an unread indicator on a run's actions menu when the run has reviewer notes you have not seen yet.
* The waterfall view is now full-height with sticky turn headers, so you keep your place while scrolling through long traces.
* Global search now includes context and sandboxes
## Deployment
* You can now trigger a LangSmith Deployment from the [Studio](/langsmith/studio) page.
* LangSmith Deployment now supports [deploying Google Agent Development Kit (ADK) agents](/langsmith/deploy-google-adk).
## Sandboxes
* [Sandbox proxy rules](/langsmith/sandbox-auth-proxy) now support configuring AWS authentication, so sandboxes can reach AWS services through the proxy with signed requests.
* Sandboxes can create [snapshots](/langsmith/sandbox-snapshots) from a Dockerfile build source.
## Admin and billing
### Administration
* Organization admins can now disable personal access token creation from the [organization settings](/langsmith/administration-overview) page.
### Usage and billing
* [Granular billable usage](/langsmith/granular-usage) now supports filtering and grouping by retention tier, separating long-lived from short-lived traces.
* The Granular Billable Usage page now surfaces LangSmith Deployment usage, including nodes executed, agent runs, and agent uptime, alongside trace usage.
## Fixes
* Performance improvements for the loading of large traces.
* Filter values for metadata are now preserved when you reopen a filter dropdown to edit it.
* Dataset creation now uses a multi-select dropdown for choosing CSV fields.
## New features
* [Templates](/langsmith/fleet/templates) now show “by Fleet” with the Fleet logo, so curated templates match Fleet branding.
## Fixes
* The Fleet list-threads endpoint now returns `items` instead of `threads`, so the response shape matches the rest of the API.
* Fleet thread requests now return a clearer error when a large response would have triggered a 5xx, so long lists fail gracefully.
## New features
* [Skills](/langsmith/fleet/skills) load faster: the skills list fetches lightweight metadata first and loads file contents only when you open a skill.
* The agent creation menu adds a [Templates](/langsmith/fleet/templates) entry.
* The [remote MCP](/langsmith/fleet/remote-mcp-servers) authorization screen now shows the connecting application's name, logo, and homepage, terms, and privacy links instead of its raw client ID.
* [Slack integration](/langsmith/fleet/slack-app) available in AWS and APAC regions.
## Fixes
* [Scheduled (cron) execution](/langsmith/fleet/schedules) is restored for enterprise Fleet agents.
* Long-running agent runs and agent-builder generations are no longer cut off after 60 seconds.
* The Gmail read-emails [tool](/langsmith/fleet/tools) now returns results when you search sent mail with an `in:sent` query.
* Scrolling is improved for long toolbox, skill, and sub-agent lists in the agent editor, and webhook dialogs now scroll within the viewport.
***
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