Flue is a TypeScript framework that turns large language models into autonomous agents by providing sessions, tools, sandboxed execution, and durable workflows. It adds subagents, observability, fault recovery, and Model Context Protocol integrations so you can run agents locally via CLI or deploy them on hosted runtimes.

• Flue turns simple TypeScript config (model, sandbox, skills, instructions) into a fully deployable HTTP-exposed agent, no separate infra work needed.
• Built-in durability tracks agent state across restarts so long-running workflows survive failures.
• Supports subagent delegation (e.g., one agent triages issues, another verifies fixes) for specialized multi-role workflows.
• Comes with a full ecosystem out of the box: CLI, runtime, SDK, Postgres/OpenTelemetry adapters, MCP tool auth, and integrations with Slack, Teams, Discord, GitHub, Braintrust, and Sentry.