In the landscape of enterprise API ecosystems, three key behavioral archetypes emerge: the Benefactor, the Amplifier, and the Redundancer, each with a significant impact on organizational efficiency and cost. Benefactors build foundational APIs that multiple teams can reuse, thus eliminating duplicated efforts and accelerating organizational velocity, providing immense value by saving millions in build and maintenance costs while enabling faster feature development. Amplifiers, on the other hand, enhance cost-effectiveness and speed by reusing existing APIs, reducing development time, and leveraging existing solutions to accelerate time-to-market, thereby increasing potential revenue and compounding organizational learning and innovation. Conversely, Redundancers unintentionally create inefficiencies by rebuilding existing capabilities due to a lack of discoverability or trust in available APIs, leading to duplicated development and maintenance costs, operational overhead, and increased security risks. The emergence of these roles is heavily influenced by the organizational environment; in chaotic settings with poor API visibility and unclear ownership, redundancers thrive, while in well-governed environments with clear documentation and trustworthy APIs, amplifiers and benefactors flourish. Leadership can foster a healthy API ecosystem by ensuring API visibility, reliability, and governance, which encourages reuse and maximizes the potential of benefactors and amplifiers, ultimately enhancing organizational agility and competitiveness.