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 yangtaihong59/siyuan-plugins-mcp-sisyphus --skill siyuan-mcp-write-formatgit clone --depth 1 https://github.com/yangtaihong59/siyuan-plugins-mcp-sisyphusWrote 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/yangtaihong59/siyuan-plugins-mcp-sisyphus/siyuan-mcp-write-format)<a href="https://agentmods.dev/skills/yangtaihong59/siyuan-plugins-mcp-sisyphus/siyuan-mcp-write-format"><img src="https://agentmods.dev/badge/skills/yangtaihong59/siyuan-plugins-mcp-sisyphus/siyuan-mcp-write-format/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/yangtaihong59/siyuan-plugins-mcp-sisyphus/siyuan-mcp-write-format"><img src="https://agentmods.dev/badge/skills/yangtaihong59/siyuan-plugins-mcp-sisyphus/siyuan-mcp-write-format.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 | $0.00052 | $0.00276 |
| Opus 5 | $0.00026 | $0.00138 |
| Sonnet 5 | $0.00010 | $0.00055 |
| Haiku 4.5 | $0.00005 | $0.00028 |
Grade A, and why
siyuan-mcp-write-format 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 12d 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
Write and Format SiYuan Content
Read the target first, choose the highest-level action that preserves intent, perform one bounded change, then read it again. Use fs(action="write") for convenient path-based documents; use document and block actions for IDs, attributes, daily notes, or block-granular edits. Use block(action="replace") for a small exact replacement and update only when replacing the whole block.
Write rich content as SiYuan Markdown. Use an attribute view for real database behavior rather than a Markdown table. Do not invent unsupported markup. Resolve the exact target and obtain approval before rename, move, delete, or broad replacement.
For detailed examples, read skill://siyuan-mcp-create-edit/SKILL.md and skill://siyuan-mcp-markup-guide/SKILL.md. If the experimental Skills extension is disabled, use the stable resources siyuan://skills/siyuan-mcp-create-edit and siyuan://skills/siyuan-mcp-markup-guide instead.
What ships with it
1 file 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.
- 12d ago First seen · 13 lines · 52 tokens per session scan A 63fb533a8f48
siyuan-mcp-write-format is a skill published in the GitHub repository yangtaihong59/siyuan-plugins-mcp-sisyphus (104 stars, last pushed 2d ago), licensed MIT. It adds 52 tokens to every session and 276 once invoked, about $0.0003 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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