BrainBlend AI releases Tesseron, an open-source API that lets app developers define how AI agents should behave

BrainBlend AI published Tesseron on GitHub as an open-source project—a framework that lets developers build and control AI agents (AIs that decide what actions to take on their own) through code, rather than relying on pre-built agent libraries.

Instead of developers adapting their apps to fit existing agent tools, Tesseron flips the model: developers write the rules first, and the agent learns to follow them. This means a team building a customer-service chatbot can define exactly how it should prioritize replies, escalate problems, or refuse requests—without waiting for the tool vendor to add that feature.

App developers and startups building AI-powered products now have a choice between closed commercial platforms (which move faster but impose constraints) and this open alternative (which demands more engineering work but gives full control). Teams with AI-engineering capacity may save on licensing costs and vendor lock-in.