Dev MCP Prompt Server

Instructions

Implementation Reference

• src/server.ts:223-251 (handler)

  The core handler logic for the 'list_skills' tool within the CallToolRequestSchema switch statement. It retrieves skill prompts from the 'skills' category, optionally filters by tags provided in arguments, maps relevant fields, and returns a formatted JSON list as text content.

  case "list_skills":
    const skillsPrompts =
      await this.promptManager.searchPromptsByCategory("skills");
  
    let skillsList = skillsPrompts.map((skill) => ({
      id: skill.id,
      title: skill.title,
      description: skill.description,
      tags: skill.tags,
      effectiveness: skill.effectiveness,
    }));
  
    if (args && Array.isArray(args.tags) && args.tags.length > 0) {
      const tags: string[] = args.tags;
      skillsList = skillsList.filter((item) => {
        return item.tags.some((item) => tags.includes(item));
      });
    }
  
    logger.info(`Listed ${skillsList.length} skills`);
  
    return {
      content: [
        {
          type: "text",
          text: JSON.stringify(skillsList, null, 2),
        },
      ],
    };

• src/prompt-manager.ts:220-240 (helper)

  Helper function in PromptManager used by the list_skills handler to fetch all prompts in the 'skills' category (searchPromptsByCategory('skills')).

  searchPromptsByCategory(category: string) {
    const lowercaseQuery = category.toLowerCase();
    const results: PromptWithScore[] = [];
  
    for (const prompt of this.prompts.values()) {
      let score = 0;
  
      // Check tags
      // Check category
      if (prompt.category.toLowerCase().includes(lowercaseQuery)) {
        score += 1;
      }
  
      if (score > 0) {
        results.push({ ...prompt, searchScore: score });
      }
    }
  
    // Sort by score (descending)
    return results;
  }