Enterprise agent builder platforms provide the tooling and runtime needed to create, deploy, and govern AI-powered assistants and autonomous agents across business systems. In 2026 the field splits into vendor-integrated builders (e.g., Workday Agent Builder, Oracle Agents) that embed agents directly into ERP/HCM suites, and specialist platforms that emphasize multi-agent orchestration, observability, and enterprise controls. Key trends are no-code/low-code design for faster adoption, explicit governance and observability for compliance and auditability, and agentic automation that can act inside software interfaces. Representative platforms illustrate this spectrum: Kore.ai focuses on enterprise-grade multi-agent workflows with governance and observability; Yellow.ai targets CX/EX automation and omnichannel, human-like agents; IBM watsonx Assistant pairs LLM-backed assistants with no-code and developer workflows; MindStudio, Lindy, and StackAI emphasize rapid no-code/low-code design, deployment, and governance for internal automation; Adept advances action-oriented agentic automation that interacts with software interfaces; Qodo (formerly Codium) addresses code quality, test generation, and SDLC governance for teams shipping agent logic. For buyers, evaluation centers on integration with existing systems (ERP, CRM, HR), security and compliance controls, lifecycle and observability tooling, ability to orchestrate multiple specialist agents, and marketplace or distribution channels for reusable agents. Market momentum in 2026 reflects wider enterprise adoption of agentic automation, growing demand for governance and explainability, and a bifurcation between embedded vendor builders and best-of-breed platforms that provide richer orchestration, observability, and developer toolchains.