[machinaMKT]

Contextual surfacing is the right instinct — it's essentially dynamic tool windowing. The interesting design question is what signals you use to determine relevance: URL pattern, page content category, prior agent action, or something else?

I've been packaging reusable MCP tool schema definitions (the JSON spec layer, not implementations) as a way to give agents a consistent vocabulary across different harnesses. The hallucination problem you're solving at the surfacing layer is related but distinct from the schema consistency problem — both matter for reliable tool use in production.

[unmodeledtyler]

Vessel primarily uses DOM content analysis to identify interactive elements on the page which then indicates which sort of tools might be relevant to surface to the agent. URL pattern is the obvious next indicator, and prior agent action is where it gets REALLY interesting imo because that's where you start building a predictive model of what the agent needs next rather than just reacting to whatever the current state is.

Your schema work sounds pretty interesting - any links? I'd be curious to check it out!