miyazawai/dsh-melody-launcher-overture/officecli-xlsx

OfficeCLI XLSX Skill

Setup

If officecli is missing:

• macOS / Linux: curl -fsSL https://d.officecli.ai/install.sh | bash
• Windows (PowerShell): irm https://d.officecli.ai/install.ps1 | iex

Verify with officecli --version (open a new terminal if PATH hasn't picked up). If install fails, download a binary from https://github.com/iOfficeAI/OfficeCLI/releases.

⚠️ Help-First Rule

This skill teaches what good xlsx looks like, not every command flag. When a property name, enum value, or alias is uncertain, consult help BEFORE guessing.

officecli help xlsx                         # List all xlsx elements
officecli help xlsx <element>               # Full element schema (e.g. pivottable, chart, cf)
officecli help xlsx <verb> <element>        # Verb-scoped (e.g. add chart, set cell)
officecli help xlsx <element> --json        # Machine-readable schema

Help reflects the installed CLI version. When this skill and help disagree, help is authoritative.

Shell & Execution Discipline

Shell quoting (zsh / bash). Excel paths contain [], and number formats contain $. Both are shell metacharacters. Rules:

• ALWAYS quote element paths: "/Sheet1/row[1]", not /Sheet1/row[1].
• Use single quotes for any prop value containing $: numFmt='$#,##0'.
• For formulas with cross-sheet ! references, use batch with a <<'EOF' heredoc (see Known Issues).
• \n and \t in a prop value ARE interpreted by the CLI — \n is a real in-cell line break (pair with --prop wrapText=true), \t a tab — consistent across xlsx / docx / pptx. Double them (\\n) for a literal backslash-n (rarely wanted). ($ is the shell layer above — single-quote it.)

Incremental execution. Run commands one at a time and read each exit code. officecli mutates the file on every call; a 50-command script that fails at command 3 will cascade silently. One command → check output → continue.

Requirements for Outputs

Before reaching for a command, know what a good xlsx looks like. These are the deliverable standards every workbook MUST meet.

All Excel files

Zero formula errors. Every delivered workbook MUST have ZERO #REF!, #DIV/0!, #VALUE!, #NAME?, #N/A. No exceptions — guard denominators with IFERROR or IF(x=0,...).

Formulas, not hardcoded values. If a number can be computed from other cells, it is a formula. Hardcoding 5000 where =SUM(B2:B9) belongs breaks the contract that the workbook stays live when inputs change. This is the single most important rule in this skill.

Professional font. Use one consistent, professional font across the workbook (Arial / Calibri / Times New Roman). Don't mix four fonts because one sheet came from CSV.

Explicit widths. There is no auto-fit. Any column the user will read MUST have width set — default 8.43 chars clips everything. Sensible starts: labels 20-25, numbers 12-15, dates 12, short codes 8-10.

Preserve existing templates. When editing a file that already has a look, match it. Existing conventions override these guidelines.

Visual delivery floor (applies to EVERY workbook)

Before you declare done, run officecli view "$FILE" html and Read the returned HTML path to confirm all of these:

• No `###` in any cell. ### means a column is too narrow for its widest value. Every column the user reads needs an explicit width. ### in a delivered file is unfinished work, never "a small visual nit".
• No truncated titles. Sheet titles, section headers, long labels must fit. Widen the column or apply wrapText=true on the cell.
• No placeholder tokens rendered as data. $fy$24, {var}, <TODO>, xxxx must never appear in a cell, chart title, series name, or legend. These are build-time tokens that escaped replacement.
• Pie / doughnut slices have distinct fill colors. If the slices render same-colored, switch to bar / column or set colors=... explicitly.
• No empty trailing pages / empty chart anchors. anchor=D2:J18 over empty source cells looks like a broken chart.

If any of the above fails, STOP and fix before declaring done.

Print layout. Any sheet the user may print or send as a board pack needs page setup. Default portrait + no fit-to-page splits wide tables and charts mid-way. Pick the fit mode by sheet shape:

# Summary / chart / dashboard sheet (small, ≤ ~40 rows): fit to a single page.
officecli set "$FILE" "/Summary" --prop orientation=landscape --prop fitToPage=true
# Tall data table (dozens+ rows): fit WIDTH only, let height paginate naturally.
# fitToPage=true here crushes every row onto one page → unreadable (### dates, 5px rows).
officecli set "$FILE" "/Data" --prop orientation=landscape --prop fitToPage=1x0

fitToPage=true == 1x1 == fit both axes to one page — correct only when the sheet is already short. 1x0 = fit 1 page wide, unlimited pages tall. Trigger: sheet holds a chart, or > 8 columns, or the user's ask mentions print / board / investor.

Financial models only — skip this section if you are building a template, tracker, CSV import, or operational sheet

Scope: budgets, forecasts, 3-statement models, valuation, any $-heavy analytical workbook. A customer-support tracker or onboarding template does not need this section.

Color coding — industry standard. Five core colors used as a language, not decoration. A reviewer should tell what a cell IS by color alone — before reading the formula.

A reviewer should tell what a cell IS just by its color — before reading the formula. This is a communication contract, not a cosmetic preference.

Number formatting — standards, not preferences.

• Years are text, not numbers. Format 2026 not 2,026 — use numFmt="@" or set type=string.
• Currency carries its unit in the header (Revenue ($mm)), not in every cell.
• Zeros display as `-`, not 0. Use $#,##0;($#,##0);"-".
• Percentages default to one decimal: 0.0%.
• Negatives use parentheses: (1,234) not -1,234.
• Valuation multiples use 0.0x format (EV/EBITDA, P/E, etc.).

Assumptions live in cells, not inside formulas. =B5*(1+$B$6) is correct; =B5*1.05 is a bug. Document each blue hardcoded input with an adjacent source note in the next cell or a cell comment:

Source: Company 10-K, FY2024, Page 45, Revenue Note
Source: Bloomberg, 2026-05-02, AAPL US Equity
Source: Management guidance, Q2 2026 earnings call

Any hardcoded number without a source is an undocumented assumption — a reviewer cannot audit it.

Common Workflow

Six steps. Every non-trivial build follows this shape.

1. Open/save lifecycle. Use officecli open <file> at the start and officecli save <file> at the end to flush to disk — save only writes and leaves the resident warm for follow-up edits; reach for officecli close <file> only to release the resident on a one-shot handoff. Both are always safe (never error or lose work). For many cells, use batch: ≤ 50 ops/block recommended; tested up to 80+ ops per block on pure value-set payloads with zero failures. Cross-sheet formula batches are the exception — run those non-resident, single heredoc (see Known Issues). Flush only at the non-officecli boundary: officecli's own reads always see your edits; run save/close only before a non-officecli program reads the file (openpyxl/pandas, Excel, a renderer, delivery).
2. Create or load. officecli create "$FILE" (new) or officecli view "$FILE" outline (existing — get the lay of the land first).
3. Build incrementally. One command, read the output, continue. After any structural op (new sheet, chart, named range, pivot), run get on it to confirm shape before stacking more on top.
4. Format. Column widths, number formats, freeze panes, tab colors, header fills. Formatting is not optional polish — per "Requirements for Outputs" it is part of the deliverable.
5. Save, then reckon with the cache. officecli save <file> writes to disk. Newly-added formulas ship without cached values; when a human opens the file in a spreadsheet app, the app recalculates and populates them. But your downstream `INDEX/MATCH`, `SUMPRODUCT`, or any formula that references an upstream formula will cache whatever the upstream cached at write-time — often `0` or a stale value — and that cached lie survives into non-recalculating readers. After any multi-formula build involving array formulas (SUMPRODUCT, SUMIFS with dynamic criteria) or cross-sheet chains, re-touch every downstream cell (run set again with the same formula) so the engine recomputes its cache from the freshly-cached upstream. ⚠️ Re-touch on cross-sheet chains via resident is unreliable (see Batch / resident caveats) — prefer non-resident set for the re-touch pass. Then officecli get a few downstream cells and eyeball that their cachedValue= is plausible. validate is safe with a resident open and itself flushes pending edits to disk (same as docx / pptx).
6. QA — assume there are problems. See the QA section. You are not done when your last command exited 0; you are done after one fix-and-verify cycle finds zero new issues.

Quick Start

Minimal viable xlsx: 3 months of revenue + a total formula + column widths + a currency format. Adapt, don't copy-paste — your file, your data.

officecli create "$FILE"
officecli open "$FILE"
officecli set "$FILE" /Sheet1/A1 --prop value=Month --prop bold=true
officecli set "$FILE" /Sheet1/B1 --prop value=Revenue --prop bold=true
officecli set "$FILE" /Sheet1/A2 --prop value=Jan
officecli set "$FILE" /Sheet1/A3 --prop value=Feb
officecli set "$FILE" /Sheet1/A4 --prop value=Mar
officecli set "$FILE" /Sheet1/B2 --prop value=42000 --prop numFmt='$#,##0'
officecli set "$FILE" /Sheet1/B3 --prop value=45000 --prop numFmt='$#,##0'
officecli set "$FILE" /Sheet1/B4 --prop value=48000 --prop numFmt='$#,##0'
officecli set "$FILE" /Sheet1/A5 --prop value=Total --prop bold=true
officecli set "$FILE" /Sheet1/B5 --prop formula="SUM(B2:B4)" --prop bold=true --prop numFmt='$#,##0'
officecli set "$FILE" "/Sheet1/col[A]" --prop width=12
officecli set "$FILE" "/Sheet1/col[B]" --prop width=15
officecli close "$FILE"
officecli validate "$FILE"

Verified: validate returns no errors found, B5 resolves to 135000. This is the shape of every build: open → set cells/formulas → format → close → validate.

CSV / bulk import

Native `import` command (preferred for CSV/TSV). Fastest path; loads a CSV into a sheet in one call. --header sets AutoFilter + freeze pane on row 1. Widths and numFmt still need a follow-up pass (per D-12 in Dashboard skill).

officecli import "$FILE" /Sheet1 --file data.csv --header
officecli import "$FILE" /Sheet1 --file data.tsv --format tsv --header
officecli import "$FILE" /Sheet1 --stdin --start-cell B2 < data.csv

Python + batch fallback — use when you need custom type coercion, formula injection, or the CSV lives inside another data pipeline. Recipe for 600-6000+ cells:

# gen_batch.py — produces batch chunks of 80 value-set ops each
import csv, json
ops = []
with open("data.csv") as f:
    reader = csv.reader(f)
    for r, row in enumerate(reader, start=1):
        for c, val in enumerate(row):
            col = chr(ord('A') + c)
            ops.append({"command":"set","path":f"/Data/{col}{r}",
                        "props":{"value": val}})
for i in range(0, len(ops), 80):
    print(json.dumps(ops[i:i+80]))