mcp 0.5.0 - tools can't declare dependencies, agent schedules them wrong and everything breaks

ok so we have a workflow where tool A fetches data, tool B processes it, tool C writes results. in 0.5.0 there's no way to declare that B depends on A's output or C depends on B's output. agent schedules them nondeterministically, sometimes C runs before B finishes, sometimes B runs before A returns data. entire workflow just fails randomly. we've been working around it by having each tool poll for its dependencies in a retry loop which is completely insane and burns through our api quota. does anyone know if there's a way to declare tool dependencies in 0.5.0 or do we just have to manually coordinate execution order in the agent prompt