Three things really stand out to me about this exposition:
- the synthesis of what each proposal does and how the first two fit inside the third
- the step-change in client DevEx by introducing representation at runtime, and
- the ambitious push to end ENSIP proliferation for metadata conventions
NMS governs data shapes via schemas, but the implicit limitation is that NMS can only govern key shapes whose pattern was previously anticipated, while flat parameterized keys govern by convention to account for novel key shapes that emerge outside a schema’s regex.
A separation of concerns is the natural resolution: NMS handles the identity and metadata layer — typed keys, self-describing schemas, what the agent is, who controls it.
Any new metadata convention focused on routing and discovery (open keyspace, flat records, how you reach it across protocols) warrants its own ENSIP.