> ## Documentation Index
> Fetch the complete documentation index at: https://langchain-5e9cc07a-preview-opensw-1781706951-9d0138e.mintlify.site/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).

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  If you use self-hosted LangSmith, see the [self-hosted changelog](/langsmith/self-hosted-changelog) for updates.
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<Tabs>
  <Tab title="LangSmith Cloud">
    <Update label="June 1-5, 2026" rss={{ title: "2026-06-01 - LangSmith Cloud update" }}>
      ## 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.
    </Update>
  </Tab>

  <Tab title="LangSmith Fleet">
    <Update label="June 1-5, 2026" rss={{ title: "2026-06-01 - LangSmith Fleet update" }}>
      ## 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.
    </Update>
  </Tab>
</Tabs>

***

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