get_dynamic_comments

Retrieve comments from Bilibili dynamic posts with pagination and nested reply support. Requires valid Bilibili Cookie for authentication.

Instructions

获取 B 站动态的评论内容，支持分页和楼中楼回复。注意：需要有效的 B 站 Cookie 才能正常工作。

Input Schema

TableJSON Schema

Name	Required	Description	Default
`dynamic_id`	Yes	B 站动态 ID
`page`	No	页码，默认为 1
`pageSize`	No	每页数量，范围 1-20，默认 20
`includeReplies`	No	是否包含楼中楼回复
`outputFormat`	No	输出格式: markdown 或 json	markdown
`cookie`	No	B 站 Cookie（可选）。如果已设置环境变量，则无需提供。

Implementation Reference

src/tools/dynamic.js:13-63 (handler)

Main handler function for 'get_dynamic_comments' tool. Validates input parameters (dynamic_id, page, pageSize, includeReplies, outputFormat, cookie), fetches dynamic details, retrieves comments via Bilibili API, and returns formatted output (markdown or json). Includes error handling and validation logic.

export async function getDynamicComments(args, api) {
    try {
        const { dynamic_id, page = 1, pageSize = 20, includeReplies = true, outputFormat = "markdown" } = args;
        const cookie = getValidCookie(args.cookie);

        if (!cookie) {
            throw new McpError(ErrorCode.InvalidParams, "必须提供有效的 B 站 Cookie。请通过参数传入或设置 BILIBILI_SESSDATA 环境变量。");
        }
        if (!dynamic_id) throw new McpError(ErrorCode.InvalidParams, "必须提供 dynamic_id");
        if (!validateDynamicId(dynamic_id)) {
            throw new McpError(ErrorCode.InvalidParams, `无效的 dynamic_id 格式: ${dynamic_id}。动态ID应该是长数字字符串。`);
        }
        if (pageSize < 1 || pageSize > 20) throw new McpError(ErrorCode.InvalidParams, "pageSize 必须在 1-20 之间");
        if (page < 1) throw new McpError(ErrorCode.InvalidParams, "page 必须大于等于1");
        if (!["markdown", "json"].includes(outputFormat)) throw new McpError(ErrorCode.InvalidParams, "outputFormat 必须是 markdown 或 json");

        // 获取动态详情，确定正确的评论参数
        const dynamicDetail = await api.getDynamicDetail(dynamic_id, cookie);

        const response = await api.fetchDynamicComments(
            dynamic_id, page, pageSize, cookie,
            dynamicDetail.commentType, dynamicDetail.oid
        );

        if (response.data.code !== 0) {
            let errorMsg = getApiErrorMessage(response.data.code, response.data.message);
            if (response.data.code === -404) {
                errorMsg = "动态不存在或已被删除。请检查 dynamic_id 是否正确，或该动态可能已被作者删除。";
            }
            throw new McpError(ErrorCode.InternalError, `B 站 API 错误 (${response.data.code}): ${errorMsg}`);
        }

        // 构建楼中楼获取函数（使用正确的 oid）
        const fetchRepliesFn = (comment) => api.fetchReplies(dynamicDetail.oid, comment.rpid, cookie, dynamic_id);

        if (outputFormat === "json") {
            const jsonResponse = await generateJsonResponse(response.data.data, includeReplies, fetchRepliesFn);
            return { content: [{ type: "text", text: JSON.stringify(jsonResponse, null, 2) }] };
        } else {
            const markdownResponse = await generateDynamicMarkdown(
                response.data.data, includeReplies, fetchRepliesFn, dynamicDetail.type
            );
            return { content: [{ type: "text", text: markdownResponse }] };
        }
    } catch (error) {
        if (process.env.NODE_ENV === 'development') {
            console.error(`[ERROR] 获取动态评论失败:`, error);
        }
        return { content: [{ type: "text", text: `❌ 获取动态评论失败: ${error.message}` }] };
    }
}

src/server.js:60-75 (schema)

Tool schema definition for 'get_dynamic_comments'. Defines the tool name, description, inputSchema with properties (dynamic_id, page, pageSize, includeReplies, outputFormat, cookie), required fields, and annotations for the MCP tool registry.

    name: "get_dynamic_comments",
    description: "获取 B 站动态的评论内容，支持分页和楼中楼回复。注意：需要有效的 B 站 Cookie 才能正常工作。",
    inputSchema: {
        type: "object",
        properties: {
            dynamic_id: { type: "string", description: "B 站动态 ID" },
            page: { type: "number", default: 1, description: "页码，默认为 1" },
            pageSize: { type: "number", default: 20, description: "每页数量，范围 1-20，默认 20" },
            includeReplies: { type: "boolean", default: true, description: "是否包含楼中楼回复" },
            outputFormat: { type: "string", default: "markdown", description: "输出格式: markdown 或 json" },
            cookie: { type: "string", description: "B 站 Cookie（可选）。如果已设置环境变量，则无需提供。" }
        },
        required: ["dynamic_id"]
    },
    annotations: { title: "B站动态评论获取", readOnlyHint: true, openWorldHint: false }
}

src/server.js:84-85 (registration)
Tool registration in CallToolRequestSchema handler. Routes 'get_dynamic_comments' tool calls to the getDynamicComments handler function.
```
case "get_dynamic_comments":
    return await getDynamicComments(args, this.api);
```

src/tools/dynamic.js:1-5 (helper)

Helper utilities imported for the get_dynamic_comments tool: McpError and ErrorCode for error handling, getValidCookie and validateDynamicId for validation, getApiErrorMessage for API error messages, and formatters for markdown/json output.

import { McpError, ErrorCode } from "@modelcontextprotocol/sdk/types.js";
import { getValidCookie, validateDynamicId } from '../utils/cookie.js';
import { getApiErrorMessage } from '../utils/common.js';
import { generateDynamicMarkdown } from '../formatters/markdown.js';
import { generateJsonResponse } from '../formatters/json.js';

Bilibili Comments MCP