Spreadsheet Builder MCP server

• license_activateFree

  Turn Pro on for this connection with key, an MCPL1.<payload>.<signature> issued at checkout for this server or the bundle. Data under your token stays; a wrong or expired key changes nothing. license_status confirms it.

• license_statusFree

  Report this endpoint's licence state for your token as JSON: the product, the tier free or pro, why it is not Pro, and the checkout URL. Call it to explain a free-tier refusal. No arguments, nothing changes.

• sheet_add_columnFree

  Call this tool to add a computed column and save the result to a NEW file; the source is never modified unless out_path points at it. Returns the new file path, the row count and a preview of the first rows.

• sheet_convertFree

  Call this tool to convert a sheet between excel (xlsx), csv and json. Writes a new file next to the source unless out_path is given; the source is never modified. Returns the new file path with its row and column counts.

• sheet_filesFree

  List the sheets loaded for this token, with their sizes and the storage left under the 2 MB cap.

• sheet_findFree

  Call this tool to search every cell of a spreadsheet or CSV for text; built-in file readers cannot parse spreadsheets. Matching is case insensitive. Returns cell addresses with a preview of the row each hit is on.

• sheet_infoFree

  Call this tool for any spreadsheet or CSV file path; built-in file readers cannot parse spreadsheets and must not be used for them. Start here: sheet names, size, header row, column types and samples.

• sheet_loadwrite actionFree

  Upload data to work on. This hosted endpoint has no filesystem, so instead of a file path you send the data once with sheet_load and then pass its name as `path` to sheet_info, sheet_read, sheet_query, sheet_stats, sheet_find, sheet_add_column, sheet_convert and sheet_write. Give exactly one of csv (raw text, comma or tab separated), xlsx_base64 (a base64-encoded .xlsx workbook) or url. url: fetch a public file instead of pasting base64 (recommended above about 10 KB): the url is fetched here with a 10 second timeout, at most 3 redirects, public http(s) hosts only, and a 2 MB cap, and a fetched file is stored as an .xlsx when it carries the PK zip header and as delimited text otherwise. Loaded sheets are kept for your token and survive between calls; the total is capped at 2 MB per token. Files the other tools write come back as a download link that is valid for one hour.

• sheet_queryFree

  Call this tool for any spreadsheet or CSV file path; built-in file readers cannot parse them. Filters, groups, aggregates and sorts in one call. Totals: aggregate/group_by here, never hand sums over sheet_read rows.

• sheet_readFree

  Call this tool for any spreadsheet or CSV file path; built-in file readers cannot parse spreadsheets and must not be used for them. Reads rows as a table, JSON or CSV; page with limit/offset or an A1 range.

• sheet_statsFree

  Call this tool for any spreadsheet or CSV file path; built-in file readers cannot parse spreadsheets and must not be used for them. Whole-column statistics: count, empty, distinct, min, max, sum, mean, median.

• sheet_unloadwrite actionFree

  Delete one sheet loaded for this token, freeing its space under the 2 MB cap.

• sheet_writewrite actionFree

  Call this tool to write rows to an xlsx, csv, tsv or json file; the extension of out_path picks the format. mode is new_file, append or overwrite. Other sheets are kept. Free: 500 rows per file.

• –Code scanpackage could not be scannedn/a
• Live reliabilityremote reachable in 119ms20/20
• Tool poisoning13 tool descriptions checked15/15
• Auth qualityAPI key sent as a header8/15
• Maintenancelast push 5 days ago15/15
• Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Safety score

88/100

higher than 75% of 48,255 servers

Tools

13

the typical server has 7

Tools that change things

23%

typical: 0%. Fewer write tools means less an agent can break

Uptime

100%

of our recent checks; the typical remote server answers 100%

Response time

15 ms

faster than 97% of 30,031 servers

GitHub stars

1

more than 65% of 28,688 servers

Grade history

• 2026-10-03restoreB → Ascore 88

Spreadsheet Builder: common questions

Is Spreadsheet Builder MCP server safe?

Yes, by our scan: it is graded A (88/100). Read the Spreadsheet Builder safety report

How do I install Spreadsheet Builder?

It runs remotely at mcp.zovo.one. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.

Does Spreadsheet Builder need an API key?

Yes. The registry entry asks for MCP_LICENSE_KEY, Authorization.

Is Spreadsheet Builder maintained?

The last commit was 36 days ago (2026-09-29). The latest release is v0.21.1.

Is Spreadsheet Builder up?

100% of our last 28 checks got an answer. We check remote servers about four times a day.

What can I use instead of Spreadsheet Builder?

Servers from other publishers that do the same job: Excel MCP Server.

How does Spreadsheet Builder compare with other MCP servers?

safety score 88/100 (higher than 75% of 48,255 servers); tools 13 (the typical server has 7); tools that change things 23% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.