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 nexus-research-lab/nexus --skill ima-skillgit clone --depth 1 https://github.com/nexus-research-lab/nexusWrote 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/nexus-research-lab/nexus/ima-skill)<a href="https://agentmods.dev/skills/nexus-research-lab/nexus/ima-skill"><img src="https://agentmods.dev/badge/skills/nexus-research-lab/nexus/ima-skill/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/nexus-research-lab/nexus/ima-skill"><img src="https://agentmods.dev/badge/skills/nexus-research-lab/nexus/ima-skill.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 | $0.00137 | $0.04165 |
| Opus 5.5 | $0.00055 | $0.01666 |
| Sonnet 5.5 | $0.00027 | $0.00833 |
| Haiku 4.5 | $0.00014 | $0.00417 |
Grade A, and why
ima-skill 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.
This is a copy
98% identical to ima-skill — 2 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 — 288 lines — stays where its author put it; the contents beside it link to each section on GitHub.
ima-skill
Unified IMA OpenAPI skill. Currently supports: notes, knowledge-base.
⛔ MANDATORY RULES — read before ANY operation
- UTF-8 encoding (notes writes only): Before calling
import_docorappend_doc, ALL string fields (content,title) MUST be validated as legal UTF-8. Non-UTF-8 content causes irreversible garbled text. See Detailed Rules for platform-specific methods. - File upload naming:
titleMUST equalfile_name(with extension). Never rename, shorten, translate, or modify the original filename. - Unsupported file types: Reject immediately with a clear message. Do NOT ask user "do you still want to try?" Video files, Bilibili/YouTube URLs, and
file://URLs are not supported — tell user to use IMA desktop client. - File upload integrity: Keep file content as-is during upload. No encoding conversion for binary files (PDF, images, Excel, etc.).
- PowerShell 5.1 (all modules): If running in PowerShell, detect version before first API call. PS 5.1 silently converts request Body to GBK — must use UTF-8 byte array mode. See Detailed Rules.
模块决策表
| 用户意图 | 模块 | 读取 |
|---|---|---|
| 搜索笔记、浏览笔记本、获取笔记内容、创建笔记、追加内容 | notes | notes/SKILL.md |
| 上传文件、添加网页链接、搜索知识库、浏览知识库内容、获取知识库信息、获取可添加的知识库列表 | knowledge-base | knowledge-base/SKILL.md |
| 查看原文、分析原文、导出原文（需要 media_id） | knowledge-base | knowledge-base/SKILL.md |
⚠️ 易混淆场景
| 用户说的 | 实际意图 | 正确路由 |
|---|---|---|
| "把这段内容添加到知识库XX里的笔记YY" | 往已有笔记追加内容 | notes — 先搜索笔记获取 note_id，再用 append_doc |
| "把这个写到XX笔记里"、"记到XX笔记" | 往已有笔记追加内容 | notes — append_doc |
| "把这篇笔记添加到知识库" | 将笔记关联到知识库 | knowledge-base — add_knowledge with media_type=11 |
| "上传文件到知识库" | 上传文件到知识库 | knowledge-base — create_media → COS → add_knowledge |
| "新建一篇笔记记录这些内容" | 创建新笔记 | notes — import_doc |
| "帮我记一下"、"记录一下"、"保存为笔记"（未指定已有笔记） | 意图不明确，需要确认 | notes — 先询问用户是创建新笔记还是追加到哪篇已有笔记 |
| "添加到笔记里"（未指定具体哪篇） | 意图不明确，需要确认 | notes — 先询问用户是创建新笔记还是追加到哪篇已有笔记 |
What ships with it
9 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 · 288 lines · 137 tokens per session scan A 4217d856b23f
ima-skill is a skill published in the GitHub repository nexus-research-lab/nexus (154 stars, last pushed today), licensed Apache-2.0. It adds 137 tokens to every session and 4,165 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 98% identical to ima-skill, differing in 2 lines, and is treated as a copy.
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