Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add lianghsun/open-sheet --skill current-sheetgit clone --depth 1 https://github.com/lianghsun/open-sheetWrote 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/lianghsun/open-sheet/current-sheet)<a href="https://agentmods.dev/skills/lianghsun/open-sheet/current-sheet"><img src="https://agentmods.dev/badge/skills/lianghsun/open-sheet/current-sheet/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/lianghsun/open-sheet/current-sheet"><img src="https://agentmods.dev/badge/skills/lianghsun/open-sheet/current-sheet.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 1 finding, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Excessive Agency · line 3 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00084 | $0.00447 |
| Opus 5.5 | $0.00034 | $0.00179 |
| Sonnet 5.5 | $0.00017 | $0.00089 |
| Haiku 4.5 | $0.00008 | $0.00045 |
Grade A, and why
current-sheet 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 1mo 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.
What it actually says
Resolve "this one"
The dev server publishes the reader's position to
node_modules/.open-sheet/current.json as they navigate:
{ "id": "fy26-budget", "sheet": "P&L", "cell": "B7", "updatedAt": "2026-08-18T…" }
Read that file, or GET http://localhost:5373/__open-sheet/api/current.
Using it
- Read the file. If it is missing or
updatedAtis old, the dev server is probably not running — ask which workbook rather than guessing. idgives yousheets/<id>/index.tsx.cellis an A1 address for reading only. It tells you where the user is pointing; it is not something to write into the source.
Turning a cell into a source location
The user points at a cell; you have to edit the block that produced it. Open the workbook and work out which block covers that address — usually obvious from the sheet's structure — then change the authoring construct:
| The user says | You change |
|---|---|
| "this number is wrong" | the value in the data array, or the formula |
| "make this a percentage" | format on that column |
| "this column should be a bar" | bar: true on that column |
| "this total is wrong" | the total aggregate, or the formula feeding it |
Never respond by writing an address into the file. If you find yourself wanting
to, re-read sheet-authoring.
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.
- 1mo ago First seen · 40 lines · 84 tokens per session scan A ed83a2ea1766
current-sheet is a skill published in the GitHub repository lianghsun/open-sheet (127 stars, last pushed 1mo ago), licensed MIT. It adds 84 tokens to every session and 447 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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