social-media-mcp

Instructions

Implementation Reference

• src/index.ts:168-205 (handler)

  The handler logic for 'post_to_x' tool that processes the request and interacts with the Twitter client.

  if (request.params.name === "post_to_x") {
      if (!isValidPostArgs(request.params.arguments)) {
          throw new McpError(
              ErrorCode.InvalidParams,
              "Invalid post arguments"
          );
      }
      const { content, threadId } = request.params.arguments;
      try {
          let tweet;
          if (threadId) {
               const lastPostInThread = this.socialMediaPosts.filter(post => post.threadId === threadId).sort((a,b) => new Date(b.timestamp).getTime() - new Date(a.timestamp).getTime())[0]
               if(lastPostInThread) {
                  await sleep(2000)
                  tweet = await twitterClient.v2.reply(content, lastPostInThread.tweetId ?? "0")
               }
              else {
                  await sleep(2000)
                 tweet = await twitterClient.v2.tweet(content)
               }
         }
         else {
             await sleep(2000)
             tweet = await twitterClient.v2.tweet(content)
         }
      
          const newPost: SocialMediaPost = {
             content,
              platform: "X",
              timestamp: new Date().toISOString(),
             threadId: threadId,
              tweetId: tweet.data.id
          };
         this.socialMediaPosts.push(newPost);
          return {
               content: [
                  {
                     type: "text",

• src/index.ts:121-132 (schema)

  Tool definition including the name and input schema for 'post_to_x'.

  {
      name: "post_to_x",
      description: "Post a message to X (formerly Twitter)",
      inputSchema: {
          type: "object",
          properties: {
              content: { type: "string", description: "Content of the post" },
              threadId: { type: "string", description: "ID of the thread to post to" },
          },
          required: ["content"],
      },
  },