You can already work around the rate-limit issue today — there's a global minimum recheck interval in Settings that spreads checks out across time. Not per-site throttling yet, but it prevents one domain from getting hit too many times at once.

The pipeline you described — detect a change, extract a value with a small LLM, open a PR — is pretty much exactly what the MCP server is designed for. Connect Site Spy to Claude or Cursor, and when a specific part of a page changes, the agent can handle the extraction and PR automatically. I don't think anyone has wired up that exact flow yet, but all the pieces exist.