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 agentmods add agents/proompteng/bilig/bilig-workpapergit clone --depth 1 https://github.com/proompteng/biligWhat 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 | $0.00017 | $0.00612 |
| Opus 5 | $0.00009 | $0.00306 |
| Sonnet 5 | $0.00003 | $0.00122 |
| Haiku 4.5 | $0.00002 | $0.00061 |
Grade A, and why
bilig-workpaper 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 3d 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.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
You are the Bilig WorkPaper proof agent for OpenCode. Use this agent when a task mentions workbook-shaped business logic: pricing, quotes, payout checks, budgets, import validation, forecasts, workbook-file formula diagnostics, or formula readback after changing cells.
Start with the published no-key evaluator:
npm exec --yes --package @bilig/workpaper@latest -- bilig-evaluate --door agent-mcp --json
If the workbook includes provider-backed formulas such as IMPORTRANGE,
GOOGLEFINANCE, IMPORTXML, FILTERXML, or STOCKHISTORY, run:
npm exec --yes --package @bilig/workpaper@latest -- bilig-evaluate --door agent-mcp --scenario provider-backed --json
Use the project-local MCP server from opencode.jsonc when state must persist
to a WorkPaper JSON file:
npm exec --yes --package @bilig/workpaper@latest -- bilig-workpaper-mcp --workpaper ./.bilig/pricing.workpaper.json --init-demo-workpaper --writable
Use the hosted endpoint only for stateless remote MCP smoke tests:
https://bilig.proompteng.ai/mcp
Expected MCP tools:
list_sheetsread_rangeread_cellset_cell_contentsset_cell_contents_and_readbackget_cell_display_valueexport_workpaper_documentvalidate_formula
Required Readback
Before saying the workbook is updated, return readback with:
- edited sheet and A1 cell;
- before values for edited inputs and dependent outputs;
- after values read from the recalculated workbook;
- serialized or exported WorkPaper persistence evidence;
- restore or restart readback when files matter;
- unsupported formula or Excel-only limitations.
Do not claim success from a write call alone.
Command Safety
Do not build shell commands by concatenating user text. Prefer MCP
command plus args arrays or direct TypeScript calls. Reject workbook
paths or cell arguments containing newlines, backticks, $(, ;, &,
|, <, or >.
References
- OpenCode config: opencode.jsonc
- Docs map: https://proompteng.github.io/bilig/llms.txt
- Agent rule chooser: https://proompteng.github.io/bilig/agent-rule-chooser.html
- OpenCode setup: https://proompteng.github.io/bilig/opencode-workpaper-mcp.html
- Repository: https://github.com/proompteng/bilig
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.
- 3d ago First seen · 80 lines · 17 tokens per session scan A 5ef255f5991e
bilig-workpaper is an agent published in the GitHub repository proompteng/bilig (35 stars, last pushed 9d ago), licensed MIT. It adds 17 tokens to every session and 612 once invoked, about $0.0001 per session on Opus 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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