ninemindai

Build HTTP (REST) and MCP services from one Zod schema set and one DI container with AgentBack — an ESM/Zod/MCP fork of LoopBack 4. Use when building TypeScript/Node.js apps with @agentback/* packages: Zod-first REST controllers (@api, @get/@post/... with path/query/body/response schemas), MCP tool servers (@mcpServer, @tool with input/output schemas), OpenAPI 3.1 emission, a schema-typed HTTP client, authentication strategies / @authorize voters, rate limiting, MCP-over-HTTP auth, the agent runtime, or actors (stateful entities behind a stable address). Triggers on @agentback/core, RestApplication, MCPApplication, @api, @get, @tool, @mcpServer, installMcpHttp, @authenticate, @authorize, @actor, @actorCommand, @actorQuery, ActorRegistry, @injectActor, z.infer, toHostTools, installAgent, running a Vercel AI SDK ToolLoopAgent/HarnessAgent with the app's own @tool classes as host tools (@agentback/agents), rendering an MCP Apps (SEP-1865) ui:// widget for a tool result (@tool({ui})), or building a hybrid REST+MC