SumOffice
Open, read, edit and save Word documents and Excel workbooks with formulas, macros and queries intact.
Connect your .docx, .doc, .odt documents and .xlsx, .xlsm, .xlsb, .xls, .ods workbooks to Muse. Read paragraphs and cells, propose edits with preview, apply changes, and download the edited file. Preserves formatting, comments, tracked changes, VBA macros and Power Query.
Try asking Muse: "Open my Excel budget spreadsheet, update the Q4 revenue numbers, and save me a copy with the changes."
Source: Found in the official MCP Registry (com.sumoffice/office) · First listed September 24, 2026
Last 24 hours
Each bar is one check, every 15 minutes. Green means it answered. Last checked 49 min ago.
Is it safe to connect?
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
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How to add it to Muse
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://view.sumoffice.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 711ms. Worked in 100% of checks over 30 days.
Screening · September 24, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 21
document_openOpen one of the demo files by name: documents footnotes, comments, forms, rtl, wild-horse, workshop, offer, tools; workbooks workbook, functions, macros, queries, gep, vba-web, sqlite, order-desk, onrr, cashflow, pivot, chart, notes, check, xtools. Default is footnotes. For your document_open_fileOpen YOUR file in a private editor cabin for this session: a .docx/.doc/.odt document or an .xlsx/.xlsm/.xlsb/.xls/.ods workbook, up to 50 MB. Give exactly one of: url (https link the server can fetch), base64 (file bytes; then name with the extension is required). Nothing in thedocument_describeName, pages, paragraphs, words, number of comments and tracked changes, whether track changes is on. For documents; call first.document_readParagraph text as a window: from = index of the first paragraph (0-based), count = how many (max 40). The answer carries next — where to continue, null at the end. A missing paragraph is a refusal, not an invention.document_findParagraphs containing the text (case-insensitive), with snippets around the match.document_commentsComments (author, text, anchor, resolved) and tracked changes — up to 50.document_propose_replacementPropose the full new text of one paragraph (paragraph_index from document_read). Nothing changes yet: the editor core builds the change on a copy and returns before/after plus checks (numbers, dates, links kept). Then call document_apply with the proposal_id. Read the paragraph fdocument_applyApply a proposal from document_propose_replacement to the document in this session's cabin (not to your original file). Stale proposal (the document moved on) is refused by the engine — propose again. Repeating an applied proposal is a no-op.sheet_describeWorkbook overview: every sheet tab with its used range, the current revision, and the header row of the sheet that is open. Call this first, then pass the tab name you need as "sheet" to sheet_read and sheet_find.sheet_readRead a rectangular range like A1:F20 (max 60 rows × 26 columns): values and formulas. Empty cells are omitted. ALWAYS pass "sheet" with the exact tab name when the workbook has more than one sheet — without it you read whichever sheet happens to be open, and the answer will quietsheet_findFind cells whose value or formula contains the text (case-insensitive) in the used range of a sheet. ALWAYS pass "sheet" with the exact tab name when the workbook has more than one sheet: without it only the sheet that happens to be open is searched.macro_listList VBA modules and runnable macros (entry points) in this workbook with their route and blockers. Runs nothing.macro_read_sourceRead the source text of one procedure (module + procedure name from macro_list). Read-only; runs nothing.macro_planPlan a macro run without running it: route, whether the engine can run it natively, blockers, instruction budget.query_listList Power Query queries in this workbook: names, step chain, load target, connections. Reads only; refreshes nothing.query_explainExplain one Power Query query by name: its steps in order, where it loads, its connection. Reads only; refreshes nothing.workbook_inspectMap the whole application model of this workbook in one call: sheets; VBA modules, procedures, which can run here and which are blocked and why; event handlers; external objects (CreateObject) and Windows API (Declare) dependencies; project references; Power Query queries; data csheet_propose_editsPropose new contents for up to 20 cells (formulas like =SUM(B2:B9), or numbers/text). Nothing changes in the workbook: the engine previews the edits on the current revision and reports what would change and whether errors appear; the person decides whether to apply. Read the cellsheet_applyApply a proposal from sheet_propose_edits to the workbook in this session's cabin (not to your original file); the engine recalculates. Refused if the workbook revision moved on since the proposal — propose again. Repeating an applied proposal is a no-op.document_save_copyWrite the document or workbook as it is now in this session's cabin (after applied proposals) to a copy and return a download link valid for 24 hours. Your original file is never touched. A workbook with macros comes back as .xlsm with the VBA project intact; a document keeps itsdocument_export_pdfLay out the document as it is now in this session's cabin (after applied proposals, or as opened) and return a PDF download link valid for 24 hours, plus the page count. Documents only; for workbooks use document_save_copy.Recent checks
Link
https://view.sumoffice.com/mcpQuestions about SumOffice in Muse
How do I connect SumOffice to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use SumOffice to help me. It is a free service with an MCP server at https://view.sumoffice.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is SumOffice working right now?
At the last check (September 28, 2026, 08:46 UTC) the endpoint was working, answering in 711ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is SumOffice safe to connect to Muse?
It was screened on September 24, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can SumOffice do in Muse?
It exposes 21 tools, including document_open, document_open_file, document_describe, document_read. For example, you could ask Muse: "Open my Excel budget spreadsheet, update the Q4 revenue numbers, and save me a copy with the changes."
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