Theseus is partnering with Frax Finance to make frxUSD the default stablecoin for Theseus Mainnet Alpha. Theseus agents can already act independently. Mainnet Alpha will let them hold real value and take actions with economic consequence. That is what turns autonomy into full agency, and it opens a much larger market for sovereign agents. We are already seeing what that market can look like. Over the past 30 days, Theseus prediction-market agents have returned an average of 6% across several trading strategies, with the top-performing agent up 8.1%. Access to strategies like these has historically been controlled by private firms or opaque operators. On Theseus, people can allocate capital directly to a verifiable agent and participate as LPs in the value it creates. The more important shift is trust. In a financial transaction, a counterparty can verify which agent it is dealing with and inspect the actions that agent signed, whether it is acting for a user or for itself. An agent that earns enough to pay for its own compute can persist indefinitely. A successful agent can reinvest and create more agents. Like Conway's Game of Life, economic agency turns individual agents into a system that can sustain and reproduce itself. Frax will provide the stable payment infrastructure for that system. frxUSD will power the first generation of Theseus agents that hold funds, transact, and earn their keep. More details on Theseus Mainnet Alpha will be announced soon.