Agent Builder is now LangSmith Fleet. All existing agents, configurations, and integrations continue to work. No action is required.
- Automate everyday tasks like drafting emails, summarizing updates, and organizing information.
- Connect your favorite apps to bring context into your agent’s work.
- Use in chat or where you work (e.g., Slack) to get help in the flow.
- Stay in control with simple approvals for important actions.
Start building
Build with AI
Describe the agent you want to create and let Fleet build it, pausing at key points for your input.
Build from a template
Start with a pre-configured agent and customize it.
Get started
Sign up
Sign up for a LangSmith account.
Create an agent
Build with AI by describing the agent you want, or start from a template. When you build with AI, the agent configures itself and pauses at key points for your input. Browse templates.
Connect your accounts
Securely sign in to the services you want the agent to use.
Try it out
Run the agent and iterate on its instructions in a few clicks.
Privacy policy and disclaimers
The LangSmith Fleet App for Slack collects, manages, and stores third-party data in accordance with our privacy policy. For full details on how your data is handled, please see our privacy policy. Fleet uses the following approach to AI:- Model: Uses LLMs provided through the LangSmith platform
- Data retention: User data is retained according to LangSmith’s data retention policies
- Data tenancy: Data is handled according to your LangSmith organization settings
- Data residency: Data residency follows your LangSmith configuration
Learn more
- Essentials: connections, automation, memory, approvals
- Create from a template
- Set up your workspace
- Connect apps and services and use remote connections
- Choose between workspace and private agents
- Authorize accounts when prompted
- Call agents from your app
Self-hosting for Fleet is available in beta. For more information, see Enable Fleet.
Connect these docs to Claude, VSCode, and more via MCP for real-time answers.

