LangSmith Fleet: Agent Identity with Per-Agent Slack Bots, ABAC Permissions, and Deploy CLI

LangChain Blog·high signal

LangChain rebranded Agent Builder to LangSmith Fleet with three major additions: agent identity (each agent gets its own Slack bot handle like @vendor-intake or @weekly-sales-numbers), Attribute-Based Access Control for tag-based allow/deny policies layered on RBAC, and a Deploy CLI for one-step terminal-to-production agent deployment. This is the first enterprise agent management platform with per-agent messaging identity.