The best verified Agent frameworks in 2026

Agent frameworks provide the reusable runtime pieces for building software that can plan, call tools, keep state and coordinate work around a language model. Some focus on a single agent loop; others model graphs, teams, hand-offs or durable workflows. The right framework depends on the control you need over execution, persistence, observability and deployment, not on a universal feature score. Before adopting one, inspect its programming language, licence, supported model interfaces, tool-calling model and approach to retries or human approval. Documentation quality and an active public repository can also affect how quickly a team can diagnose failures. Attest verifies that each listed framework has a reachable public surface and enough visible product evidence to distinguish it from an empty or parked project. The check is limited: it is not a code audit, benchmark or endorsement. This hub reads the current verified category data, orders entries by launch recency and links every framework to its Attest record. Use those records as a starting point, then confirm technical fit against the framework's own documentation.