Office MCP

Driving Office with office-mcp

These tools edit the Microsoft Office documents the user already has open on macOS, live (via Apple events). Each app is a separate MCP server (word, excel, powerpoint); the connected server's tools are prefixed word_* / excel_* / ppt_*. Every server also exposes run_applescript (escape hatch) and *_screenshot.

Core workflow: read -> edit -> see

1. Read first — *_status to confirm the app/document is open, then read the relevant content (word_get_document_text, excel_read_range, ppt_read_slide) so you act on real indices/values, not guesses.
2. Edit with the most specific tool.
3. Verify visually — call *_screenshot after any layout/format change and look at the result. Don't assume; confirm.

Conventions

• Indexes (slides, shapes, paragraphs, tables, rows) are 1-based.
• Colors are [r, g, b], 0-255.
• Excel ranges are A1-style; most Excel tools take an optional sheet (name) — omit for the active sheet, pass it to work across tabs. Reads return 2-D lists.
• Prefer the composite tools for common multi-step tasks (fewer calls, more reliable — especially for smaller models):
  • word_add_section(heading, body, level) — styled heading + paragraph.
  • excel_write_table(start_cell, values, header) — values + header + borders + autofit.
  • ppt_add_content_slide(title, bullets) — a titled, bulleted slide.

Per-app notes

• Word: editing is paragraph-anchored — read word_get_paragraphs to get the index, then word_insert_paragraph(after=N or before=N, style=…), word_replace_paragraph(N, …), word_delete_paragraph(N). word_get_paragraph(N) gives one paragraph's full text. word_insert_text only appends at the end; word_insert_at_cursor / word_replace_selection act at the live cursor. word_get_stats for page/word counts (no screenshot). Build with word_add_section and word_insert_table(data=…) / word_fill_table. word_find_replace caps the replacement at 255 chars — use the paragraph tools for bigger text.
• Excel: formatting via excel_format_range; structure via excel_insert_rows/_columns, excel_sort, excel_autofilter, excel_set_borders, excel_create_chart; sheets via excel_add_sheet etc.
• PowerPoint: PowerPoint can't report which shape is selected — take a screenshot to see it. Reveal-on-click = ppt_add_animation(..., exit=True) on a cover shape. Add objects with ppt_add_textbox / ppt_add_image.

Not possible (don't attempt — they error in the dictionary)

• PowerPoint: duplicating slides, creating charts, creating tables on slides.
• Word: comments.

Do these manually or tell the user. For anything else uncovered, use run_applescript.

Permissions

First use of an app prompts a macOS Automation grant on the terminal app (each app prompts once). The *_screenshot tools also need Screen Recording (separate prompt, takes effect only after the terminal restarts). A denial returns a clear "not authorized" error — guide the user to System Settings -> Privacy & Security.