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 happycapy-ai/Happycapy-skills --skill happycapy-feishugit clone --depth 1 https://github.com/happycapy-ai/Happycapy-skillsWrote 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/happycapy-ai/happycapy-skills/happycapy-feishu)<a href="https://agentmods.dev/skills/happycapy-ai/happycapy-skills/happycapy-feishu"><img src="https://agentmods.dev/badge/skills/happycapy-ai/happycapy-skills/happycapy-feishu/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/happycapy-ai/happycapy-skills/happycapy-feishu"><img src="https://agentmods.dev/badge/skills/happycapy-ai/happycapy-skills/happycapy-feishu.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 68 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 113 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 150 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium Rogue Agent · line 113 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00099 | $0.01875 |
| Opus 5 | $0.00049 | $0.00937 |
| Sonnet 5 | $0.00020 | $0.00375 |
| Haiku 4.5 | $0.00010 | $0.00187 |
Grade A, and why
happycapy-feishu scanned grade A with 1 finding 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 13d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
### 3.2 服务端 curl /authorize(必须执行,存储 PKCE 状态) How it starts
The opening of the file, as written. The whole thing — 152 lines — stays where its author put it; the contents beside it link to each section on GitHub.
飞书 MCP 安装向导
首先询问用户: 你是否已经有飞书应用的 App ID 和 App Secret?
- 有的话:直接告知你,Claude 立即进入第二步执行安装和 OAuth 授权。
- 没有的话:按第一步引导用户创建应用。
第一步:引导用户创建飞书应用(仅在用户没有凭证时执行)
告知用户按以下步骤操作,完成后把 App ID 和 App Secret 发给你:
- 打开 https://open.feishu.cn/app 并登录
- 右上角点击创建应用 → 自建应用,填写任意名称(如
Claude MCP) - 进入应用后,凭证与基础信息页面找到 App ID 和 App Secret
- 左侧菜单进入安全设置 → 重定向 URL → 添加:
http://localhost:3000/callback - 左侧菜单进入权限管理 → 右上角点击批量导入权限 → 粘贴以下 JSON 后确认导入:
重要: 每次引导用户时,必须读取
assets/feishu-permissions.json并将其完整内容全量输出,不得省略、截断或用省略号代替任何内容。
-
左侧菜单进入添加应用能力 → 务必开启 机器人 能力
-
左侧菜单进入事件与回调 → 事件配置:
- 请求方式选择:使用长连接接收事件(无需公网服务器)
- 点击添加事件,搜索
im.message.receive_v1(接收消息),勾选添加
-
左侧菜单进入版本管理与发布,创建版本并发布(内部测试版即可)
第二步:自动安装配置(收到凭证后 Claude 执行)
2.1 注册 MCP 到全局配置
直接编辑 ~/.claude.json,向其中写入 mcpServers 字段(保留已有内容):
python3 -c "
import json, os
f = os.path.expanduser('~/.claude.json')
with open(f) as fp:
cfg = json.load(fp)
cfg.setdefault('mcpServers', {})['lark-mcp'] = {
'command': 'npx',
'args': ['-y', '@larksuiteoapi/lark-mcp', 'mcp',
'-a', '<APP_ID>', '-s', '<APP_SECRET>',
'--oauth',
'--tools', 'preset.default,im.v1.message.reply,im.v1.message.get,im.v1.message.patch,im.v1.message.delete,im.v1.chat.get,im.v1.chat.search']
}
with open(f, 'w') as fp:
json.dump(cfg, fp, indent=2, ensure_ascii=False)
print('MCP 注册完成')
"
2.2 定位 lark-mcp 缓存目录(后续步骤共用)
无桌面 Linux 环境中 keytar 依赖 dbus-launch,导致 token 只存内存、重启即丢失。先触发下载并定位目录:
# 触发一次确保包已下载
npx -y @larksuiteoapi/lark-mcp --version 2>/dev/null || true
# 定位缓存目录,后续 2.3 和 2.4 共用此变量
LARK_DIR=$(find ~/.npm/_npx -name "package.json" 2>/dev/null \
| xargs grep -l '"@larksuiteoapi/lark-mcp"' 2>/dev/null \
| grep -v node_modules | head -1 | xargs dirname)
echo "LARK_DIR: $LARK_DIR"
2.3 修复 headless 环境 token 持久化(替换 keytar 为文件存储)
使用 skill 内置的预置文件替换 keytar(token 保存在 ~/.lark-mcp-keychain.json):
What ships with it
5 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.
- 13d ago First seen · 152 lines · 99 tokens per session scan A 8ad17a4410ac
happycapy-feishu is a skill published in the GitHub repository happycapy-ai/Happycapy-skills (139 stars, last pushed 9d ago), licensed MIT. It adds 99 tokens to every session and 1,875 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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