Anthropic's own weekly sales digest runs on Claude Code plus a BigQuery MCP connector and nine hand-written content rules.

A field marketer wired Claude Code to the marketing warehouse through a BigQuery MCP server, pulling from HubSpot, Clay and Salesforce to send a personalized Slack DM to every account executive each Monday, no approval step (Anthropic). The reliability work is the transferable part: nine explicit content rules accumulated from field feedback, a hard rule never to invent URLs so links render only on character-for-character matches from the source sheet, contact-title validation against event audience, and a header-row check before each run so the job survives spreadsheet column changes. Extending it to BDRs meant duplicating the prompt and changing one field.