Kopium turns agent replies into partial programs

Kopium’s strongest idea is treating the wire format as an executable, typed program rather than a transport for opaque tool calls.

• –A single interpreter tool can express multi-step workflows, bind intermediate values, and compose chains the model was never explicitly trained on.
• –Koru declarations generate the grammar, tool vocabulary, documentation, argument shapes, and legal outcome branches enforced by the runtime.
• –Early measurements are promising but provisional: matched tasks used roughly 25–40% fewer context tokens, while a 50-task sweep reached 47/50.
• –Partial execution makes failures diagnosable: completed prefixes remain accounted for, while invalid tails are refused instead of silently producing misleading output.
• –The wire guarantees structure, not judgment; policy/evaluation mismatches and unresolved hard tasks show that better execution semantics still need better benchmarks.