In the Software Engineering area, Web Accessibility is gaining more space, establishing itself as an important quality attribute. In the context of agile development, approaching this type of requirement by development teams is still a challenging task, as there is often a lack of knowledge about the domain and a lack of methods or tools to support the specification of accessibility requirements, which end up being neglected or considered only in the final phase of the projects. Therefore, this work proposes the development of a framework to support the specification of web accessibility requirements in an agile context. The framework consists of automating the reuse of accessibility requirements, supporting the generation of artifacts, such as user stories, thus improving communication between stakeholders and supporting the analysis of the possible impact of these accessibility requirements on other system features.