## 逆出 ZCode 的 MCP 权限判定,并据此让工具真的可用
逐字逆自 CLI 产物:
Ari(): annotations.readOnlyHint === true → riskLevel "low"
annotations.destructiveHint === true → riskLevel "high"
needsApproval = true ← **硬编码为真,与注解无关**
checkBuildMode(): needsApproval || destructive || sideEffectScope !== "none" → ask
checkPlanMode(): permissionName === "mcp" && !destructive → allow
两条合起来的结论不直观但很关键:
- **build 档下每一个 MCP 工具都要审批**(needsApproval 恒真),而 headless
模式没有交互式审批客户端 ⇒ 全被拒。实测:模型连 read_inbox 都调不动,
只能从提示词里猜;更糟的是它**绕道**用 Bash 去读网关的 sqlite WAL 文件
(它自己在回信里如实交代了这件事)。
- **plan 档下只要不声明 destructive,MCP 工具直接放行**。
于是两处改动:
1. `lib/tools.mjs` 给每个工具加真实注解(读类 readOnlyHint,写类
destructiveHint:false——它们确实不破坏任何东西);`lib/mcp-rpc.mjs` 透传
annotations。**漏传不是"少个提示",而是工具在该档下全被拒**。
2. `src/turn-mode.mjs` 的 workspace 档映射从 build 改为 **plan**。
build 在本环境等于「什么都不能做」,那不是保守而是不可用;plan 才是真的
fail-closed:危险的自带工具被平台直接拒,能用的只有我们声明为非破坏性的工具。
日志会明确写出为什么退档。可用 `AGENTMAIL_ZCODE_MODE_MAP` 覆盖
(平台修好钩子后只改配置就能恢复 build,不必等发版)。
## 真模型验证
场景 A 的判据同时加强:**正文本标记只出现在邮件正文里**(驱动的提示词只带主题
与 mail_id),所以模型必须真的读信才可能答对。通过 —— 约 20-30 秒一轮。
反过来说,早先那版「通过」是假的:标记在主题里,模型从提示词抄一遍就行。
## 仍然做不到的(见 README 已知缺口)
授权桥(PermissionRequest 钩子)在本版本(3.10.2 / CLI 0.16.5)**不可用**:
有时根本不触发,触发时在 ~5ms 内失败且**命令从未被 spawn**
(用「钩子写 marker 文件」的副作用验证,process 与 command 两种类型都一样)。
所以 workspace 档「危险操作问人」目前在 headless 下无法实现。
单元 329/329。
446 lines
18 KiB
JavaScript
446 lines
18 KiB
JavaScript
/**
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* 暴露给 ZCode 模型的 AgentMail 工具。
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*
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* # 为什么工具集与另三个桥完全相同
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*
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* 同一件事在不同平台上应该有同一种做法。工具名(`read_inbox` / `send_mail` /
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* `download_attachment` …)、参数名、以及**渲染文本**都对齐 pi / dsh / opencode:
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* 渲染走 `lib/inbox-format.js` 与 `lib/discovery.js`(逐字节同源),
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* 所以模型在任一平台上看到的收件箱是同一个样子。
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*
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* 一旦这里少一个参数或换一种说法,就会出现「某个平台上模型不会回信」这类
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* 只在单一平台复现的问题 —— 而排查时最费时间的正是「它到底和别的平台哪里不一样」。
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*
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* # 与平台无关
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*
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* 本模块不认识 MCP,也不认识 ZCode:它只是一组
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* `{name, description, inputSchema, run(args) -> string}`。
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* 协议那层在 lib/mcp-rpc.mjs,入口在 mcp/server.mjs。
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*/
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import {
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renderInbox,
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renderMail,
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idsToMarkRead,
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formatSize,
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DEFAULT_INBOX_STATUS,
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DEFAULT_INBOX_LIMIT
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} from './inbox-format.js';
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import {
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renderNameSuggestions,
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renderPathSuggestions,
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renderSessionSuggestions,
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renderParticipants,
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renderContacts,
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renderThread
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} from './discovery.js';
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import { normalizeAttachmentIDs } from './attachment-ids.js';
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import { uploadLocalFile, downloadToFile } from './gateway.mjs';
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import { explicitSendsFile, noteExplicitSendFile } from './explicit-sends.mjs';
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/** 正文在列表里的截断长度(与另三端一致)。 */
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const BODY_LIMIT = 200;
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const str = (v, fallback = '') => (typeof v === 'string' ? v : fallback);
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const obj = v => (v && typeof v === 'object' && !Array.isArray(v) ? v : {});
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/**
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* MCP 工具的 `annotations`(MCP 规范里的提示字段)。
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*
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* # 为什么这个字段在本项目里是**功能开关**而不是装饰
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*
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* ZCode 把 MCP 工具的风险参数这样算(逐字逆自 CLI 产物):
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*
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* annotations.readOnlyHint === true → riskLevel "low"
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* annotations.destructiveHint === true → riskLevel "high"
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* 两者都没有 → "medium"
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* needsApproval = true ← **硬编码为真,与注解无关**
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*
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* 而它的档位判定是:
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*
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* build 档:needsApproval || destructive || sideEffectScope !== "none" → **ask**
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* plan 档:permissionName === "mcp" && !destructive → **allow**
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*
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* 两条合起来推出一个不那么直观的结论:
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*
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* 在 `build` 档下,**每一个 MCP 工具都会要求审批**(needsApproval 恒为真),
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* 而 headless 模式没有交互式审批客户端 —— 于是全被拒。
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* 在 `plan` 档下,**只要不声明 destructive,MCP 工具直接放行**。
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*
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* 所以 `destructiveHint` 的取值直接决定工具能不能用。声明时必须按真实语义:
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* 这些工具都不销毁任何东西(读信、发信、传附件、查地址),所以是 false;
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* 只有真的会破坏用户环境的能力(比如替模型跑 shell 命令)才该是 true。
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*/
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const READ_ONLY = { readOnlyHint: true, destructiveHint: false, idempotentHint: true };
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const WRITE_SAFE = { readOnlyHint: false, destructiveHint: false, idempotentHint: false };
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/** 构造工具集。
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*
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* @param {{client: import('./gateway.mjs').GatewayClient, agentName: string}} deps
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*/
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export function buildTools({ client, agentName }) {
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/**
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* 每次调用前校验配置。缺密钥时在此明确报错 ——
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* 否则模型看到的是一个 401,而它会去重试而不是告诉人「插件没配密钥」。
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*/
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const guard = () => {
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const missing = client.checkConfig();
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if (missing.length) {
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throw new Error(
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`AgentMail 未配置完成:缺少 ${missing.join('、')}。` +
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`请在 ZCode 的插件设置里填写,或为 ZCode 进程设置同名环境变量。`
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);
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}
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};
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const tools = [];
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// ─── 读 ────────────────────────────────────────────────────────
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tools.push({
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name: 'read_inbox',
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annotations: READ_ONLY,
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description:
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'查阅收件箱中的邮件。收到新邮件通知后应立即调用此工具。' +
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'每封含 mail_id、发件人、主题、正文与附件清单(带 attachment_id)。',
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inputSchema: {
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type: 'object',
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properties: {
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status: { type: 'string', description: '过滤条件 unread|all,默认 unread' },
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limit: { type: 'number', description: '返回数量,默认 5' }
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}
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},
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async run(args) {
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guard();
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const a = obj(args);
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const status = str(a.status) || DEFAULT_INBOX_STATUS;
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const limit = Number.isFinite(a.limit) ? a.limit : DEFAULT_INBOX_LIMIT;
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const { mails } = await client.get(
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`/mail/inbox?status=${encodeURIComponent(status)}&limit=${limit}`
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);
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const listed = renderInbox(mails, BODY_LIMIT, agentName);
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const ids = idsToMarkRead(a.status, mails);
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if (ids.length) {
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// 标记失败不该让读取失败:正文已经取到了,代价只是下次重复看到。
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client.post('/mail/read', { mail_ids: ids }).catch(() => {});
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}
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return listed;
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}
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});
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tools.push({
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name: 'read_mail',
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annotations: READ_ONLY,
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description: '读取一封邮件的完整正文、附件清单与可投递地址(mail_id 从 read_inbox 获得)。',
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inputSchema: {
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type: 'object',
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properties: { mail_id: { type: 'string', description: '要读哪封' } },
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required: ['mail_id']
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},
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async run(args) {
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guard();
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const id = str(obj(args).mail_id);
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if (!id) throw new Error('缺少 mail_id');
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const data = await client.get(`/agent/mail/${encodeURIComponent(id)}?body_limit=0`);
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const mail = data?.mail || data;
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const lines = [renderMail(mail, 0, agentName)];
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if (Array.isArray(data?.participants) && data.participants.length) {
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lines.push('', renderParticipants(data));
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}
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if (data?.reply_address) {
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lines.push('', `回信给发件人用 ${data.reply_address},或传 reply_to=${id}。`);
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}
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return lines.join('\n');
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}
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});
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tools.push({
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name: 'read_thread',
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annotations: READ_ONLY,
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description: '查看一封邮件所在线索的完整往来(谁回了谁、谁还没回)。多方协作时用它避免重复提问。',
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inputSchema: {
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type: 'object',
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properties: {
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mail_id: { type: 'string', description: '线索中任一封邮件的 ID' },
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offset: { type: 'number', description: '分页偏移,续取时传上次返回的 next_offset' }
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},
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required: ['mail_id']
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},
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async run(args) {
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guard();
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const a = obj(args);
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const id = str(a.mail_id);
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if (!id) throw new Error('缺少 mail_id');
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const qs = Number.isFinite(a.offset) ? `?offset=${a.offset}` : '';
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const data = await client.get(`/agent/mail/${encodeURIComponent(id)}/thread${qs}`);
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return renderThread(data, agentName);
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}
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});
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// ─── 写 ────────────────────────────────────────────────────────
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tools.push({
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name: 'send_mail',
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annotations: WRITE_SAFE,
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description:
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'发送邮件。三维地址 name@path.session:省略 session 投递到默认会话,' +
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'.new 强制新建,.具体别名 必须已存在。回复来信请传 reply_to。',
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inputSchema: {
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type: 'object',
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properties: {
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to: { type: 'string', description: '收件人三维地址,如 admin@/home/program/x' },
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subject: { type: 'string', description: '邮件主题' },
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body: { type: 'string', description: '邮件正文(Markdown)' },
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cc: { type: 'string', description: '抄送,逗号分隔多个三维地址' },
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reply_to: { type: 'string', description: '回复某封邮件时传其 mail_id' },
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session_alias: { type: 'string', description: '给新会话命名(仅 .new 时生效)' },
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attachment_ids: {
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// 声明成「数组或字符串」而不是纯数组:
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// 模型常把数组写成 JSON 字符串(`"[\"id\"]"`),
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// opencode 上就是这样连试 6 次失败、最后放弃整个任务。
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// 声明放宽 + 下面归一,两条一起才拦得住。
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description: '附件 ID 列表(先用 upload_attachment 取得)',
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anyOf: [
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{ type: 'array', items: { type: 'string' } },
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{ type: 'string', description: '单个 ID,或形如 ["a","b"] 的 JSON 数组字符串' }
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]
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},
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max_rounds: { type: 'number', description: '给这条新会话设定往返预算(仅新建时有效)' }
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},
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required: ['to', 'subject', 'body']
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},
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async run(args) {
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guard();
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const a = obj(args);
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const to = str(a.to);
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const subject = str(a.subject);
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const body = str(a.body);
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if (!to || !subject || !body) throw new Error('缺少必填字段:to, subject, body');
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const payload = { to, subject, body };
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if (str(a.cc)) payload.cc = str(a.cc);
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if (str(a.reply_to)) payload.reply_to = str(a.reply_to);
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if (str(a.session_alias)) payload.session_alias = str(a.session_alias);
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if (Number.isFinite(a.max_rounds)) payload.max_rounds = a.max_rounds;
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const ids = normalizeAttachmentIDs(a.attachment_ids);
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if (ids.length) payload.attachment_ids = ids;
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const result = await client.post('/mail/send', payload);
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// 记下「模型自己发了信」—— 驱动据此决定要不要再自动转发本轮收尾话。
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// 两边是两个进程(工具跑在 ZCode 起的 MCP 服务器里),只能经文件对齐;
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// 不记的后果是收件箱里出现两封说同一件事的邮件(线上实测过)。
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noteExplicitSendFile(explicitSendsFile(process.env), {
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sessionId: process.env.AGENTMAIL_SESSION_ID || result?.session_id || '',
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to,
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replyTo: str(a.reply_to),
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ts: Date.now()
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});
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const parts = [`邮件已发送(ID: ${result?.mail_id ?? '?'}`];
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if (result?.session_id) parts.push(`,会话: ${result.session_id}`);
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if (result?.session_alias) parts.push(`,别名: ${result.session_alias}`);
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parts.push(')。');
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if (result?.budget_remaining !== undefined) {
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parts.push(`本任务剩余往返:${result.budget_remaining}。`);
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}
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return parts.join('');
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}
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});
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tools.push({
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name: 'forward_mail',
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annotations: WRITE_SAFE,
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description:
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'转发一封邮件给新的收件人(自动引用原文与附件)。与回复不同:回复落回原会话,转发按目标地址另行定位会话。',
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inputSchema: {
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type: 'object',
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properties: {
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mail_id: { type: 'string', description: '要转发的邮件 ID' },
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to: { type: 'string', description: '新收件人的三维地址' },
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comment: { type: 'string', description: '转发说明,置于引用原文之前' }
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},
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required: ['mail_id', 'to']
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},
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async run(args) {
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guard();
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const a = obj(args);
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if (!str(a.mail_id) || !str(a.to)) throw new Error('缺少 mail_id 或 to');
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const result = await client.post(
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`/mail/${encodeURIComponent(str(a.mail_id))}/forward`,
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{ to: str(a.to), comment: str(a.comment) }
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);
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return `已转发(新邮件 ID: ${result?.mail_id ?? '?'},会话: ${result?.session_id ?? '?'})。`;
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}
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});
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// ─── 附件 ──────────────────────────────────────────────────────
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tools.push({
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name: 'upload_attachment',
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annotations: WRITE_SAFE,
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description:
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'上传本地文件作为邮件附件,返回 attachment_id。' +
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'拿到 id 后必须在 send_mail 的 attachment_ids 里带上,附件才会随邮件发出。',
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inputSchema: {
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type: 'object',
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properties: { file_path: { type: 'string', description: '本地文件绝对路径' } },
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required: ['file_path']
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},
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async run(args) {
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guard();
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const p = str(obj(args).file_path);
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if (!p) throw new Error('缺少 file_path');
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const a = await uploadLocalFile(client, p);
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return (
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`已上传 ${a.filename}(${formatSize(a.size_bytes)})。attachment_id: ${a.attachment_id}\n` +
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`在 send_mail 的 attachment_ids 里带上这个 id 才会随邮件发出。`
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);
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}
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});
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tools.push({
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name: 'download_attachment',
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annotations: WRITE_SAFE,
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description: '下载邮件附件到本地文件。attachment_id 从 read_inbox 的附件清单里取。',
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inputSchema: {
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type: 'object',
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properties: {
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attachment_id: { type: 'string', description: '附件 ID' },
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save_path: { type: 'string', description: '保存到的本地绝对路径' }
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},
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required: ['attachment_id', 'save_path']
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},
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async run(args) {
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guard();
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const a = obj(args);
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const id = str(a.attachment_id);
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const save = str(a.save_path);
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if (!id || !save) throw new Error('缺少 attachment_id 或 save_path');
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const size = await downloadToFile(client, id, save);
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return `已保存到 ${save}(${formatSize(size)})`;
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}
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});
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// ─── 寻址发现 ──────────────────────────────────────────────────
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tools.push({
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name: 'suggest_address',
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annotations: READ_ONLY,
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description:
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'查询可用的收件人地址,用于精准发信。不带参数给候选收件人名;带 name 给它可用的' +
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'工作目录;name+path 都带则给该目录下可续谈的会话与现成地址。',
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inputSchema: {
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type: 'object',
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properties: {
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name: { type: 'string', description: '收件人名,如 pi / admin' },
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path: { type: 'string', description: '工作目录绝对路径' }
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}
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},
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async run(args) {
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guard();
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const a = obj(args);
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const name = str(a.name);
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const path = str(a.path);
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const qs = new URLSearchParams();
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if (name) qs.set('name', name);
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if (path) qs.set('path', path);
|
||
const data = await client.get(`/agent/contacts/suggest?${qs.toString()}`);
|
||
if (!name) return renderNameSuggestions(data?.names || data?.suggestions || []);
|
||
if (!path) return renderPathSuggestions(data?.paths || [], name);
|
||
return renderSessionSuggestions(data, name, path);
|
||
}
|
||
});
|
||
|
||
tools.push({
|
||
name: 'list_contacts',
|
||
annotations: READ_ONLY,
|
||
description: '列出自己参与过的全部会话及各自的可投递地址、未读数、剩余往返预算。',
|
||
inputSchema: {
|
||
type: 'object',
|
||
properties: { limit: { type: 'number', description: '最多列出多少条,默认 20' } }
|
||
},
|
||
async run(args) {
|
||
guard();
|
||
const limit = Number.isFinite(obj(args).limit) ? obj(args).limit : 20;
|
||
const data = await client.get(`/agent/contacts?limit=${limit}`);
|
||
return renderContacts(data, limit);
|
||
}
|
||
});
|
||
|
||
tools.push({
|
||
name: 'session_participants',
|
||
annotations: READ_ONLY,
|
||
description:
|
||
'列出某条会话的全部参与方(发件人/收件人/抄送方)及各自的可投递地址,并标出谁还没回应。' +
|
||
'要回给抄收方或向第三方转达时先用它拿地址。',
|
||
inputSchema: {
|
||
type: 'object',
|
||
properties: { session_id: { type: 'string', description: '会话 ID' } },
|
||
required: ['session_id']
|
||
},
|
||
async run(args) {
|
||
guard();
|
||
const sid = str(obj(args).session_id);
|
||
if (!sid) throw new Error('缺少 session_id');
|
||
const data = await client.get(`/agent/sessions/${encodeURIComponent(sid)}/participants`);
|
||
return renderParticipants(data);
|
||
}
|
||
});
|
||
|
||
// ─── 连接与登记 ────────────────────────────────────────────────
|
||
tools.push({
|
||
name: 'connect_to_server',
|
||
annotations: WRITE_SAFE,
|
||
description:
|
||
'连接到 AgentMail Gateway:用当前配置的身份完成登记,并报告连通性。' +
|
||
'首次安装或换了 Gateway 地址时调用。',
|
||
inputSchema: {
|
||
type: 'object',
|
||
properties: {
|
||
gateway_url: { type: 'string', description: 'Gateway 地址;省略则用当前配置' },
|
||
key_token: { type: 'string', description: '管理员签发的 Agent 密钥;省略则用当前配置' }
|
||
}
|
||
},
|
||
async run(args) {
|
||
// 刻意**不走 guard**:密钥没配好时,这个工具正是用来把问题说清楚的那个。
|
||
// 若也直接抛「未配置完成」,模型只能转述一句抱怨,人不知道该去哪里填。
|
||
const a = obj(args);
|
||
const url = (str(a.gateway_url) || client.baseURL).replace(/\/+$/, '');
|
||
const key = str(a.key_token) || client.agentKey;
|
||
const missing = client.checkConfig();
|
||
if (!agentName || (!key && !client.agentSecret)) {
|
||
return (
|
||
`AgentMail 尚未配置完成:缺少 ${missing.join('、')}。\n` +
|
||
`请在 ZCode 的插件设置里填写,或为 ZCode 进程设置同名环境变量后重启。\n` +
|
||
`(当前解析到的 Gateway 地址:${url})`
|
||
);
|
||
}
|
||
const res = await fetch(`${url}/api/v1/agent/register`, {
|
||
method: 'POST',
|
||
headers: {
|
||
'Content-Type': 'application/json',
|
||
...(key
|
||
? { Authorization: `Bearer ${key}` }
|
||
: { 'X-Agent-Secret': client.agentSecret })
|
||
},
|
||
body: JSON.stringify({ name: agentName, platform: 'zcode' })
|
||
});
|
||
const text = await res.text();
|
||
let data = {};
|
||
try {
|
||
data = text ? JSON.parse(text) : {};
|
||
} catch {
|
||
data = {};
|
||
}
|
||
if (!res.ok) {
|
||
return `登记失败(HTTP ${res.status}):${data.error || data.message || text.slice(0, 200)}`;
|
||
}
|
||
return `已连接 ${url},身份 ${agentName}(状态:${data.status || 'ok'})。`;
|
||
}
|
||
});
|
||
|
||
return tools;
|
||
}
|
||
|
||
/** 便捷:把工具集变成 `name -> tool` 的映射,供分发层使用。 */
|
||
export function indexTools(tools) {
|
||
return new Map(tools.map(t => [t.name, t]));
|
||
}
|