Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/proompteng/bilignpx agentmods add skills/proompteng/bilig/xlsx-formula-recalcWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/proompteng/bilig/xlsx-formula-recalc)<a href="https://agentmods.dev/skills/proompteng/bilig/xlsx-formula-recalc"><img src="https://agentmods.dev/badge/skills/proompteng/bilig/xlsx-formula-recalc/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/proompteng/bilig/xlsx-formula-recalc"><img src="https://agentmods.dev/badge/skills/proompteng/bilig/xlsx-formula-recalc.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00029 | $0.01004 |
| Opus 5 | $0.00015 | $0.00502 |
| Sonnet 5 | $0.00006 | $0.00201 |
| Haiku 4.5 | $0.00003 | $0.00100 |
Grade A, and why
xlsx-formula-recalc scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
91% identical to bilig-xlsx-formula-recalc — 15 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.
XLSX Formula Recalculation
Use @bilig/xlsx-formula-recalc when an agent or Node.js service has changed
XLSX inputs and must read recalculated formula outputs without opening Excel,
LibreOffice, or a browser. The unscoped xlsx-formula-recalc package remains a
compatibility/search alias; new agent instructions should use the scoped package
first.
First Check
npm exec --yes --package @bilig/xlsx-formula-recalc@latest -- bilig-evaluate --door workbook-compatibility --json
npm exec --yes --package @bilig/xlsx-formula-recalc@latest -- bilig-evaluate --door xlsx-cache --json
Use workbook-compatibility when you need a local preflight report for a real
workbook before a Node service or agent trusts it. The report lists unsupported
functions, external links, macro payloads, pivots, volatile functions, stale
caches, and concrete risk reasons. It does not certify Excel compatibility and
must not grow a compatibility score.
The cache evaluator should print schemaVersion: "bilig-evaluator.v1",
door: "xlsx-cache", verified: true, and evidence for a stale cached
formula corrected to a Summary!B2 value of 72000.
For SheetJS / xlsx stale-formula issues, use the SheetJS-named binary from the
same package:
npm exec --yes --package @bilig/xlsx-formula-recalc@latest -- sheetjs-recalc --demo --json
If you have a real workbook but do not yet know which formula cells to verify, inspect it without writing an output file:
npm exec --yes --package @bilig/xlsx-formula-recalc@latest -- xlsx-recalc workbook.xlsx --inspect --json
For CI or issue triage, use the cache-diagnosis alias:
npm exec --yes --package @bilig/xlsx-formula-recalc@latest -- xlsx-cache-doctor workbook.xlsx --json
For workbook risk review, use the compatibility report:
npm exec --yes --package @bilig/xlsx-formula-recalc@latest -- workbook-compatibility-report workbook.xlsx --json
The inspection output includes formulaCellCount, staleCachedFormulaCount,
suggestedReads, and a nextStep.command for the recalculation proof. Default
inspection checks every formula. If a workflow sets --inspect-limit, require
uninspectedFormulaCellCount: 0 before treating the report as complete
coverage.
What ships with it
32 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- AGENTS.md 3.5 KB
- bin/bilig-evaluate.js 61 B runs code
- bin/sheetjs-recalc.js 59 B runs code
- bin/workbook-compatibility-report.js 81 B runs code
- bin/xlsx-cache-doctor.js 64 B runs code
- bin/xlsx-recalc.js 51 B runs code
- LICENSE 1.0 KB
- package.json 3.1 KB
- README.md 13 KB
- src/__tests__/bilig-evaluator-cli.test.ts 3.9 KB runs code
- src/__tests__/macos-desktop-excel-external-link-cache-oracle.test.ts 21 KB runs code
- src/__tests__/macos-desktop-excel-manual-calc-stale-cache-oracle.test.ts 7.7 KB runs code
- src/__tests__/macos-desktop-excel-unsupported-formula-cache-oracle.test.ts 8.2 KB runs code
- src/__tests__/xlsx-formula-recalc-cli-test-helpers.ts 23 KB runs code
- src/__tests__/xlsx-formula-recalc-cli.test.ts 39 KB runs code
- src/__tests__/xlsx-formula-recalc-native-aggregate.test.ts 67 KB runs code
- src/__tests__/xlsx-formula-recalc-native-typed-aggregate.test.ts 4.2 KB runs code
- src/__tests__/xlsx-formula-recalc.test.ts 48 KB runs code
- src/bytes-recalc.ts 2.1 KB runs code
- src/cache-doctor-cli.ts 200 B runs code
- src/cli-api.ts 31 KB runs code
- src/cli-github-action.ts 6.2 KB runs code
- src/cli.ts 261 B runs code
- src/evaluator-bin.ts 128 B runs code
- src/evaluator-cli.ts 17 KB runs code
- src/file-recalc.ts 2.1 KB runs code
- src/index.ts 1.1 KB runs code
- src/sheetjs-cli.ts 197 B runs code
- src/types.ts 2.1 KB runs code
- src/workbook-compatibility-report-cli.ts 185 B runs code
- src/workbook-compatibility-report.ts 121 B runs code
- tsconfig.json 420 B
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 11d ago First seen · 119 lines · 29 tokens per session scan A 163656a32aca
xlsx-formula-recalc is a skill published in the GitHub repository proompteng/bilig (36 stars, last pushed 3d ago), licensed MIT. It adds 29 tokens to every session and 1,004 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 91% identical to bilig-xlsx-formula-recalc, differing in 15 lines, and is treated as a copy.
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