Built a custom MCP server that gives Claude Code real-time access to all financial accounts via Copilot Money’s undocumented GraphQL API. Balances, credit card utilization, net worth history, spending breakdowns — all queryable as native tools. The CLI existed but didn’t expose balances, so we reverse-engineered the schema from the binary and built on top of it.

Installed Google Workspace CLI — can now go from a vault markdown file to a Google Sheet, Slides deck, or formatted email in one command. Previously, the only path to Google Workspace was browser automation — slow, brittle, breaks when the UI changes. The new scripts talk directly to Google’s API, so a markdown table becomes a formatted spreadsheet in seconds, not minutes of clicking through Chrome.

Built a data-grounded Consumer Insights section for a PMM brief. Strong output. Then discovered I’d been editing the wrong file — the brief format had changed and both files lived in the same folder. The fix isn’t “be more careful.” It’s one canonical file per deliverable, an Outputs folder for things that leave the vault, and updating the skill to know the new format exists. The bug was in the system, not the session.