Reddit MCP Server

Instructions

Implementation Reference

• src/tools/search-tools.ts:5-60 (handler)

  Main handler function for the 'get_comment' tool. It takes comment_id parameter, fetches the comment using RedditClient.getComment, formats it, and returns MCP-formatted content.

  export async function getComment(params: { comment_id: string }) {
    const { comment_id } = params;
    const client = getRedditClient();
  
    if (!client) {
      throw new McpError(
        ErrorCode.InternalError,
        "Reddit client not initialized"
      );
    }
  
    try {
      console.log(`[Tool] Getting comment ${comment_id}`);
      const comment = await client.getComment(comment_id);
      const formattedComment = formatCommentInfo(comment);
  
      return {
        content: [
          {
            type: "text",
            text: `
  # Commentaire Reddit
  
  ## Détails du commentaire
  - Auteur: u/${formattedComment.author}
  - Score: ${formattedComment.stats.score}
  - Controverse: ${formattedComment.stats.controversiality}
  
  ## Contenu
  ${formattedComment.content}
  
  ## Contexte
  - Subreddit: r/${formattedComment.context.subreddit}
  - Thread: ${formattedComment.context.thread}
  
  ## Métadonnées
  - Posté: ${formattedComment.metadata.posted}
  - Drapeaux: ${formattedComment.metadata.flags.length ? formattedComment.metadata.flags.join(", ") : "Aucun"}
  
  ## Lien
  ${formattedComment.link}
  
  ## Analyse du commentaire
  ${formattedComment.commentAnalysis}
            `,
          },
        ],
      };
    } catch (error) {
      console.error(`[Error] Error getting comment: ${error}`);
      throw new McpError(
        ErrorCode.InternalError,
        `Failed to fetch comment: ${error}`
      );
    }
  }

• src/index.ts:231-242 (registration)

  Registration of the 'get_comment' tool in the MCP server's tool list, including name, description, and input schema.

  name: "get_comment",
  description: "Accéder à un commentaire spécifique",
  inputSchema: {
    type: "object",
    properties: {
      comment_id: {
        type: "string",
        description: "L'ID du commentaire à récupérer",
      },
    },
    required: ["comment_id"],
  },

• src/index.ts:473-476 (handler)

  Dispatch handler in the main tool call switch statement that routes 'get_comment' calls to tools.getComment.

  case "get_comment":
    return await tools.getComment(
      toolParams as { comment_id: string }
    );

• src/client/reddit-client.ts:409-436 (helper)

  RedditClient method that performs the actual API call to fetch a specific comment by ID from Reddit's API.

  async getComment(commentId: string): Promise<RedditComment> {
    await this.authenticate();
    try {
      const response = await this.api.get(`/api/info.json?id=t1_${commentId}`);
      
      if (!response.data.data.children.length) {
        throw new Error(`Comment with ID ${commentId} not found`);
      }
  
      const comment = response.data.data.children[0].data;
      return {
        id: comment.id,
        author: comment.author,
        body: comment.body,
        score: comment.score,
        controversiality: comment.controversiality,
        subreddit: comment.subreddit,
        submissionTitle: comment.link_title || "",
        createdUtc: comment.created_utc,
        edited: !!comment.edited,
        isSubmitter: comment.is_submitter,
        permalink: comment.permalink,
      };
    } catch (error) {
      console.error(`[Error] Failed to get comment with ID ${commentId}:`, error);
      throw new Error(`Failed to get comment with ID ${commentId}`);
    }
  }