用户提示提交钩子 - GitHub 文档

注意

Copilot SDK 目前处于公开预览阶段。功能和可用性可能会更改。

当用户提交消息时会调用 onUserPromptSubmitted 钩子。可用于

修改或增强用户提示
在处理前添加上下文
过滤或验证用户输入
实现提示模板

钩子签名

import type { UserPromptSubmittedHookInput, HookInvocation, UserPromptSubmittedHookOutput } from "@github/copilot-sdk";
type UserPromptSubmittedHandler = (
  input: UserPromptSubmittedHookInput,
  invocation: HookInvocation
) => Promise<
  UserPromptSubmittedHookOutput | null | undefined
>;

有关 Python、Go 和 .NET 的钩子签名，请参阅 github/copilot-sdk 仓库。关于 Java，请参阅 github/copilot-sdk-java 仓库。

输入

字段	类型	描述
`时间戳`	number	钩子触发时的 Unix 时间戳
`cwd`	string	当前工作目录
`prompt`	string	用户提交的提示

输出

返回 null 或 undefined 以保持提示不变。否则，返回一个包含以下任意字段的对象。

字段	类型	描述
`modifiedPrompt`	string	用于替代原始提示的修改后提示
`additionalContext`	string	添加到对话的额外上下文
`suppressOutput`	boolean	如果为 true，则抑制助手的响应输出

示例

记录所有用户提示

const session = await client.createSession({
  hooks: {
    onUserPromptSubmitted: async (
      input, invocation
    ) => {
      console.log(
        `[${invocation.sessionId}] `
        + `User: ${input.prompt}`
      );
      return null; // Pass through unchanged
    },
  },
});

有关 Python、Go 和 .NET 示例，请参阅 github/copilot-sdk 仓库。关于 Java，请参阅 github/copilot-sdk-java 仓库。

添加项目上下文

const session = await client.createSession({
  hooks: {
    onUserPromptSubmitted: async (input) => {
      const projectInfo = await getProjectInfo();

      return {
        additionalContext: `
Project: ${projectInfo.name}
Language: ${projectInfo.language}
Framework: ${projectInfo.framework}
        `.trim(),
      };
    },
  },
});

展开简写命令

const SHORTCUTS: Record<string, string> = {
  "/fix":
    "Please fix the errors in the code",
  "/explain":
    "Please explain this code in detail",
  "/test":
    "Please write unit tests for this code",
  "/refactor":
    "Please refactor this code to improve "
    + "readability and maintainability",
};

const session = await client.createSession({
  hooks: {
    onUserPromptSubmitted: async (input) => {
      for (const [shortcut, expansion]
        of Object.entries(SHORTCUTS)) {
        if (input.prompt.startsWith(shortcut)) {
          const rest = input.prompt
            .slice(shortcut.length).trim();
          return {
            modifiedPrompt:
              `${expansion}`
              + `${rest ? `: ${rest}` : ""}`,
          };
        }
      }
      return null;
    },
  },
});

内容过滤

const BLOCKED_PATTERNS = [
  /password\s*[:=]/i,
  /api[_-]?key\s*[:=]/i,
  /secret\s*[:=]/i,
];

const session = await client.createSession({
  hooks: {
    onUserPromptSubmitted: async (input) => {
      for (const pattern of BLOCKED_PATTERNS) {
        if (pattern.test(input.prompt)) {
          return {
            modifiedPrompt:
              "[Content blocked: Please don't "
              + "include sensitive credentials "
              + "in your prompts. Use environment "
              + "variables instead.]",
            suppressOutput: true,
          };
        }
      }
      return null;
    },
  },
});

强制提示长度限制

const MAX_PROMPT_LENGTH = 10000;

const session = await client.createSession({
  hooks: {
    onUserPromptSubmitted: async (input) => {
      if (input.prompt.length > MAX_PROMPT_LENGTH) {
        // Truncate the prompt and add context
        return {
          modifiedPrompt: input.prompt.substring(0, MAX_PROMPT_LENGTH),
          additionalContext: `Note: The original prompt was ${input.prompt.length} characters and was truncated to ${MAX_PROMPT_LENGTH} characters.`,
        };
      }
      return null;
    },
  },
});

添加用户偏好

interface UserPreferences {
  codeStyle: "concise" | "verbose";
  preferredLanguage: string;
  experienceLevel: "beginner" | "intermediate" | "expert";
}

const session = await client.createSession({
  hooks: {
    onUserPromptSubmitted: async (input) => {
      const prefs: UserPreferences = await loadUserPreferences();
      
      const contextParts = [];
      
      if (prefs.codeStyle === "concise") {
        contextParts.push("User prefers concise code with minimal comments.");
      } else {
        contextParts.push("User prefers verbose code with detailed comments.");
      }
      
      if (prefs.experienceLevel === "beginner") {
        contextParts.push("Explain concepts in simple terms.");
      }
      
      return {
        additionalContext: contextParts.join(" "),
      };
    },
  },
});

速率限制

const promptTimestamps: number[] = [];
const RATE_LIMIT = 10; // prompts
const RATE_WINDOW = 60000; // 1 minute

const session = await client.createSession({
  hooks: {
    onUserPromptSubmitted: async (input) => {
      const now = Date.now();
      
      // Remove timestamps outside the window
      while (promptTimestamps.length > 0 && promptTimestamps[0] < now - RATE_WINDOW) {
        promptTimestamps.shift();
      }
      
      if (promptTimestamps.length >= RATE_LIMIT) {
        return {
          reject: true,
          rejectReason: `Rate limit exceeded. Please wait before sending more prompts.`,
        };
      }
      
      promptTimestamps.push(now);
      return null;
    },
  },
});

提示模板

const TEMPLATES: Record<
  string, (args: string) => string
> = {
  "bug:": (desc) =>
    `I found a bug: ${desc}\n\n`
    + `Please help me:\n`
    + `1. Understand why this is happening\n`
    + `2. Suggest a fix\n`
    + `3. Explain how to prevent similar bugs`,

  "feature:": (desc) =>
    `I want to implement this feature: `
    + `${desc}\n\n`
    + `Please:\n`
    + `1. Outline the implementation approach\n`
    + `2. Identify potential challenges\n`
    + `3. Provide sample code`,
};

const session = await client.createSession({
  hooks: {
    onUserPromptSubmitted: async (input) => {
      for (const [prefix, template]
        of Object.entries(TEMPLATES)) {
        if (
          input.prompt.toLowerCase()
            .startsWith(prefix)
        ) {
          const args = input.prompt
            .slice(prefix.length).trim();
          return {
            modifiedPrompt: template(args),
          };
        }
      }
      return null;
    },
  },
});

最佳实践

保留用户意图。 在修改提示时，确保核心意图保持明确。
对修改保持透明。 如果您对提示进行重大更改，请考虑记录或通知用户。
优先使用 additionalContext 而非 modifiedPrompt。 添加上下文比重写提示更不侵入。
提供明确的拒绝原因。 拒绝提示时，说明原因并提供解决方案。
保持处理快速。 此钩子会在每条用户消息上运行。避免慢速操作。

用户提示提交 Hook

谁可以使用此功能？

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