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LangSmith Fleet

LangChain's no-code platform for creating agents from chat or templates, with tool-level approvals, remote MCP servers and use in Slack, Teams and Gmail

Builder by LangChain

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Chalk Labs

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Sign up or self-host from the vendor's site. Website · Docs

About

LangSmith Fleet, formerly Agent Builder, is a no-code platform where users describe an agent or start from a template, connect their accounts and run it in chat or tools like Slack. Admins control which tools and credentials are available, and sensitive actions can require approval through an agent inbox. Tools can be added through first-party integrations or any remote MCP server, and agents can be triggered through an API. It works with OpenAI, Anthropic, Gemini or other models.

Use cases: agent-orchestration, workflow-automation

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Fact sheet

Self-host
Yeslangchain.com
Agent features
tools, human-in-the-loop, mcplangchain.com
Deployment
cloud, self-host, apilangchain.com

Pricing

Free plan plus paid plans · free tier available

Developer$0per seat per month, then pay as you go; 1 seat; 5k base traces per month; Fleet metered in LSUs at $1.00 per LSU, 7 LSU included
Plus$39/monthper seat per month; 10k base traces per month; Fleet includes 37 LSU
EnterpriseContact salescustom pricing, contact sales; self-hosted and hybrid options

As of Oct 24, 2026, from the vendor's pricing page. Prices change; check the vendor before you buy.

Facts extracted by Claude Sonnet 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Details

License
License unknown
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

More from LangChain

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped
50+
launches shipped
media placements
500+
media placements
founders on every account
2
founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

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Cite this page

LangSmith Fleet. Agent Mart. https://agentmart.dev/builders/langsmith-fleet (last updated 2026-10-24)