Most AI integrations stop at reporting. 100MCP also ships write tools, which is what lets Claude act on what it finds: update a campaign budget, pause an ad group that is overspending, reply to a new review on Google Business Profile or submit a fresh sitemap to Google and Bing.
Write access sits behind safety controls. Every write tool is scoped to the accounts you connected, destructive operations are kept out of the toolset entirely, and team members only get the capabilities you grant them. You can keep an account read-only and still get full reporting from it.
A typical flow looks like this: ask which campaigns overspent this week, review the list Claude returns, then tell it to pause the two worst performers. The analysis and the action happen in the same conversation, with you approving the step that changes money.