A computer-implemented method comprises: generating, by a computing device, a computer-accessible corpus including evidence passage generation information; storing, by the computing device, the corpus; automatically generating, by the computing device, evidence passages that support a proposer's response to a customer's proposal request, wherein the evidence passages include a narrative identifying the proposer's capabilities to satisfy evaluation criteria in the proposal request, and wherein the narrative is based on customer-specific information, wherein the generating includes accessing and searching the corpus via an application programming interface (API); and outputting, by the computing device, the evidence passages as an electronic document that is editable via software running on a user device via a user interface.