The Defense Advanced Research Projects Agency (DARPA) is seeking qualified entities to respond to a Request for Information (RFI) focused on the physics-based control over the de novo synthesis of DNA and RNA sequences in living cells. The initiative aims to develop innovative methods for template-free synthesis, addressing challenges related to scalability and environmental impacts of traditional synthesis approaches. This effort is significant for advancing synthetic biology, with potential applications in biopharmaceuticals and genetic engineering. Interested parties are encouraged to submit their responses, and DARPA may host a workshop on May 1, 2025, in Arlington, VA, for selected respondents, with travel costs reimbursed. For further inquiries, contact the BAA Coordinator at DARPA-SN-25-46@darpa.mil.