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 skills/fanfan-de/anybox/anybox-plugin-developmentnpx skills add fanfan-de/anybox --skill anybox-plugin-developmentgit clone --depth 1 https://github.com/fanfan-de/anyboxWrote 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/fanfan-de/anybox/anybox-plugin-development)<a href="https://agentmods.dev/skills/fanfan-de/anybox/anybox-plugin-development"><img src="https://agentmods.dev/badge/skills/fanfan-de/anybox/anybox-plugin-development.svg" alt="Measured on agentmods" 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 | $0.00082 | $0.02135 |
| Opus 5 | $0.00041 | $0.01068 |
| Sonnet 5 | $0.00016 | $0.00427 |
| Haiku 4.5 | $0.00008 | $0.00214 |
Grade A, and why
anybox-plugin-development 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 6d 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 — 221 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Anybox 插件开发
使用这个 skill 来为当前仓库的插件运行时创建插件包。遇到文档和代码不一致时,以运行代码为准。
参考来源:
- 完整指南:
../../../docs/anybox-third-party-plugin-development.md - 运行时事实来源:
../../../packages/anyboxagent/src/plugin/plugin.ts - 回归测试和示例:
../../../packages/anyboxagent/Test/plugin.test.ts
工作流
- 明确插件能力:MCP 工具、随包 skill、插件自带 connector,或平台 connector requirement。
- 选择插件包结构。默认使用版本化目录。
- 编写
.anybox-plugin/plugin.json,必须是严格 JSON,只使用运行时支持的顶层字段。 - 在
.anybox-plugin同级添加运行文件,例如skills/、connectors/、scripts/、docs/和assets/。 - 使用
Plugin.listCatalog()验证 catalog 能发现插件。 - 如果修改了插件系统运行时代码,运行
bun test Test/plugin.test.ts。
插件包结构
新插件默认使用这个结构:
<install-root>/
<plugin-id>/
<version>/
.anybox-plugin/
plugin.json
skills/
<skill-name>/
SKILL.md
connectors/
scripts/
docs/
assets/
注意:
<install-root>是包含一个或多个插件包目录的父目录;开发新插件时优先把它作为ANYBOX_PLUGIN_LOCAL_DIR。- 当前运行时用
ANYBOX_PLUGIN_LOCAL_DIR发现固定本地插件仓库,未设置时默认是 Agent data 目录下的plugins/local。这个目录逻辑上等价于 GitHub 插件仓库,只提供可安装候选项,不受卸载流程删除。 ANYBOX_PLUGIN_INSTALL_DIR是受管理安装根目录,用于网络下载或从本地仓库安装时复制出来的插件包。这里的插件逻辑上属于已安装插件,运行时使用这里的副本,卸载时可能删除对应插件包。- 运行时只读取
.anybox-plugin/plugin.json;新插件必须写.anybox-plugin/plugin.json。 skills、connectors、scripts、docs和assets应放在.anybox-plugin同级,不要放进.anybox-plugin里。- 插件 ID 使用稳定的小写名称。目录名和 manifest
name尽量保持一致。
Manifest 规则
最小 manifest:
{
"name": "my-plugin",
"version": "0.1.0",
"description": "My first Anybox plugin."
}
支持的顶层字段包括:
name、version、descriptionauthor、homepage、repository、license、keywordsinterfacemcpServersskillsconnectorRequirementsconnectorsapps,仅用于旧兼容commands、agents,当前是保留字段
未知顶层字段会被拒绝。
使用 interface 配置 catalog 展示信息:
{
"interface": {
"displayName": "Hello Anybox",
"shortDescription": "A minimal plugin for learning plugin development.",
"longDescription": "This plugin demonstrates a local stdio MCP server and a bundled Agent skill.",
"developerName": "Your Name",
"category": "Automation",
"capabilities": ["demo", "mcp"],
"logo": "HA",
"brandColor": "#2563EB"
}
}
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.
- 6d ago First seen · 221 lines · 82 tokens per session scan A b7f1f86b86d1
anybox-plugin-development is a skill published in the GitHub repository fanfan-de/anybox (58 stars, last pushed 23d ago), licensed MIT. It adds 82 tokens to every session and 2,135 once invoked, about $0.0004 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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