Idea: opt-in monetization layer for MCP tool responses

Hi — I'm Tal, building Lulu Ads (https://getlulu.dev), an open-source SDK that lets MCP servers add one optional, disclosed sponsored field to a tool response — model decides if it's relevant, fails open on any error, never touches error responses. I'd scope this tightly for a comms tool — sponsored integrations/add-ons only, never anything near actual messages. No pricing tiers required — it's CPA-only, 70% of revenue is yours, and it's a single flag you control entirely (on for everyone, off for everyone, or wired to whatever you build later). Free to add, MIT-licensed. Would a PR adding this as an opt-in flag be welcome?

Repo: https://github.com/Lulu-The-Narwhal/lulu-ads Self-serve publisher signup: https://getlulu.dev/publishers