Synthadoc is an open-source knowledge compilation engine that uses an LLM to turn source documents into a structured, cross-referenced wiki made from local Markdown files. It is for researchers, teams, and organizations that need a maintainable domain knowledge base, with interfaces including a CLI, Obsidian, a web UI, and MCP; the catalogue entries provide agent skills for operating its workflows.
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 axoviq-ai/synthadoc --skill xlsxgit clone --depth 1 https://github.com/axoviq-ai/synthadocWrote 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/axoviq-ai/synthadoc/xlsx)<a href="https://agentmods.dev/skills/axoviq-ai/synthadoc/xlsx"><img src="https://agentmods.dev/badge/skills/axoviq-ai/synthadoc/xlsx/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/axoviq-ai/synthadoc/xlsx"><img src="https://agentmods.dev/badge/skills/axoviq-ai/synthadoc/xlsx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00009 | $0.00295 |
| Opus 5.5 | $0.00004 | $0.00118 |
| Sonnet 5.5 | $0.00002 | $0.00059 |
| Haiku 4.5 | $0.00001 | $0.00030 |
Grade A, and why
xlsx 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.
The source is not reproduced here
Licensed AGPL-3.0
The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.
What ships with it
3 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.
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 · 55 lines · 9 tokens per session scan A e8d6db10f0b3
xlsx is a skill published in the GitHub repository axoviq-ai/synthadoc (1,568 stars, last pushed yesterday), licensed AGPL-3.0. It adds 9 tokens to every session and 295 once invoked, about $0.0000 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.
Other skills, from other repositories
dev-document
Code that generates documents inside an application (PDF, DOCX, XLSX, PPTX) - choose and wire the library for an export endpoint, an invoice, a scheduled report. Trigger when the user wants their app or a script to generate, export or download PDF/Word/Excel/PowerPoint files. For Claude itself to write, read or edit…
browser4-web-miner
Groups similar web pages together and produces an interactive HTML report with clusters of related pages, plus Excel spreadsheets for analysis. Use when the user wants to cluster downloaded HTML files, convert detail web pages into interactive views, or analyze a folder of web pages locally.
xlsx
Create, inspect, edit, recalculate, validate, render, and deliver Excel workbooks while preserving formulas, formatting, drawings, links, macros, and metadata.
craft-data-visual
Turn data into a finished visual with ArtCraft apps - GridCraft workbook with a formula-error read-back, chart, VectorCraft/DesignCraft infographic, DeckCraft slide; verified and resumable. Use for "make a chart from this spreadsheet", "build an infographic from these numbers", "put the revenue chart on a slide".
gridcraft
Headless spreadsheets with GridCraft (XLSX/CSV/TSV workbooks, formula evaluation, recalculation, PDF export), provisioned on demand by pi-craft. Use for "build a budget spreadsheet with formulas", "convert this xlsx to csv", "what does this formula evaluate to", "change a cell and recalculate the totals", "export the…
office-documents
Create, edit and convert Word, Excel, PowerPoint and PDF artifacts with format-aware verification. Use when producing docx, xlsx, pptx or PDF files; preserve templates and actual document structure, and render or recalculate before delivery.