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/askie/cfmail/email-inboxnpx skills add askie/cfmail --skill email-inboxgit clone --depth 1 https://github.com/askie/cfmailWrote 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/askie/cfmail/email-inbox)<a href="https://agentmods.dev/skills/askie/cfmail/email-inbox"><img src="https://agentmods.dev/badge/skills/askie/cfmail/email-inbox.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 | $0.00094 | $0.03113 |
| Opus 5 | $0.00047 | $0.01556 |
| Sonnet 5 | $0.00019 | $0.00623 |
| Haiku 4.5 | $0.00009 | $0.00311 |
Grade A, and why
email-inbox 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 4d 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
92% identical to email-inbox — 14 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 — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.
email-inbox
收发 cloudflare-email 邮箱里的邮件。这个服务把发到某个域名的邮件存档；你拿到一把绑定到某个邮箱地址的 API Key，就能读取属于这个邮箱的邮件，并以这个地址发信。
所有操作都通过 cfmail 这个命令行工具完成，从任何目录都能跑，不用 cd 到技能目录。
何时使用
- 收：查收邮件 / 看有没有新邮件 / 读未读邮件 / 找验证码、发票、账单、通知 / 轮询某个邮箱
- 发：发一封邮件 / 回复某封邮件 / 把某个附件发给谁 / 把收到的附件转发出去
前置：安装 cfmail（一次性）
先看有没有装：
cfmail --version
没有就装（需要 Node 20+）：
npm install -g cfmail
要跑仓库里最新未发布的代码才用源码安装：
git clone https://github.com/askie/cfmail.git
cd cfmail/cli && npm i -g $(npm pack | tail -1)
装完 cfmail 在任何目录都能用，不需要 cd 到技能目录。
第一步：配置接入点（一次性）
cfmail setup --base <服务地址> --email <你的邮箱> --key <你的API Key>
- 服务地址：例如
https://mail.example.com，不带/mcp - 邮箱地址：这把 Key 绑定的收件地址，仅用于显示，权限由 Key 决定
- API Key：一串 32 位十六进制字符，由服务管理员发放。这是凭证，不要泄露。
命令会当场连服务验证，看到 ✅ Connected 才算成功。配置写到 ~/.config/email-inbox/config.json，Key 只存在本机这个文件里。
一台机器多个邮箱
一份配置文件 = 一个邮箱。 没有「当前邮箱」这种共享设置，所以不存在被别的 Agent 改掉的问题。
再收一个邮箱就再开一份配置：
export EMAIL_INBOX_CONFIG=~/.config/email-inbox/work.json
cfmail setup --base <服务地址> --email [email protected] --key <Key>
cfmail unread # 这个进程之后都走 work 这份
密钥、未读游标、归档目录、推送设置全在各自的文件里，互相看不见。不设这个变量就用默认那份 ~/.config/email-inbox/config.json。
这台机器上有多个 Agent 时
各设各的 EMAIL_INBOX_CONFIG，一次设好，之后所有命令自动走对邮箱：
export EMAIL_INBOX_CONFIG=~/.config/email-inbox/agent-a.json
不确定自己现在连的是哪个邮箱，跑 cfmail config 看一眼——它会打印邮箱、服务地址、归档目录和用的哪份配置文件，不打印 Key。
同一份配置被并发读写是安全的，不会丢更新也不会读到写了一半的内容。
注意 unread 的语义：它是「我看到哪儿了」的游标，不是任务队列。两个 Agent 读同一个邮箱会各自拉到同一批未读——即使用两份配置也一样，那只是让游标各走各的。要分工请让它们用不同邮箱。
命令输出会标明这次读的是哪个邮箱。
收邮件
cfmail unread # 收最新未读（首次给存量，之后只给新的）
cfmail unread --peek # 只看，不标记已读
cfmail unread --all # 忽略已读状态，看最近的
cfmail unread --reset # 把当前全部标为已读
cfmail read <邮件id> # 读全文，末尾列出附件 id
cfmail read <邮件id> --html # 连 HTML 正文一起
cfmail search "关键字" # 全文搜索，中文可用
cfmail list --from [email protected] # 按发件人/主题/时间筛选
cfmail attachment <附件id> --out ./file.pdf # 下载附件
cfmail stats # 邮箱统计
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.
- 4d ago First seen · 208 lines · 94 tokens per session scan A 7a1bf605ef1a
email-inbox is a skill published in the GitHub repository askie/cfmail (0 stars, last pushed 8d ago), licensed MIT. It adds 94 tokens to every session and 3,113 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. It is 92% identical to email-inbox, differing in 14 lines, and is treated as a copy.
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