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benswel

QR for Agent

create_social_qr

Create a customizable QR code that links to multiple social media profiles. Scanning the short URL returns a JSON object with all platform links. Supports customization options like colors, dot style, and frame text.

Instructions

Create a QR code that links to social media profiles. When scanned via the short URL, returns a JSON object with all platform links. Provide at least one platform link.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
facebookNoFacebook profile/page URL.
instagramNoInstagram profile URL.
twitterNoTwitter/X profile URL.
linkedinNoLinkedIn profile URL.
youtubeNoYouTube channel URL.
tiktokNoTikTok profile URL.
githubNoGitHub profile URL.
websiteNoPersonal/company website URL.
labelNoLabel for this QR code.
formatNoImage format.svg
foreground_colorNoHex color for dots.
background_colorNoHex color for background.
dot_styleNoDot shape.
corner_styleNoCorner shape.
logo_urlNoLogo URL or data URI.
frame_styleNoFrame style around QR.
frame_textNoCTA text on frame (max 30 chars).
frame_colorNoFrame background color.
frame_text_colorNoFrame text color.

Implementation Reference

  • The 'create_social_qr' tool definition including its input schema and handler function. The handler extracts social media links (facebook, instagram, twitter, linkedin, youtube, tiktok, github, website) along with optional styling parameters and sends a POST request to /api/qr with type 'social'.
    create_social_qr: {
      description:
        "Create a QR code that links to social media profiles. When scanned via the short URL, returns a JSON object with all platform links. Provide at least one platform link.",
      inputSchema: z.object({
        facebook: z.string().optional().describe("Facebook profile/page URL."),
        instagram: z.string().optional().describe("Instagram profile URL."),
        twitter: z.string().optional().describe("Twitter/X profile URL."),
        linkedin: z.string().optional().describe("LinkedIn profile URL."),
        youtube: z.string().optional().describe("YouTube channel URL."),
        tiktok: z.string().optional().describe("TikTok profile URL."),
        github: z.string().optional().describe("GitHub profile URL."),
        website: z.string().optional().describe("Personal/company website URL."),
        label: z.string().optional().describe("Label for this QR code."),
        format: z.enum(["svg", "png"]).default("svg").describe("Image format."),
        foreground_color: z.string().regex(/^#[0-9A-Fa-f]{6}$/).optional().describe("Hex color for dots."),
        background_color: z.string().regex(/^#[0-9A-Fa-f]{6}$/).optional().describe("Hex color for background."),
        dot_style: z.enum(["square", "rounded", "dots", "classy-rounded"]).optional().describe("Dot shape."),
        corner_style: z.enum(["square", "extra-rounded", "dot"]).optional().describe("Corner shape."),
        logo_url: z.string().optional().describe("Logo URL or data URI."),
        frame_style: z.enum(["none", "banner_bottom", "banner_top", "rounded"]).optional().describe("Frame style around QR."),
        frame_text: z.string().max(30).optional().describe("CTA text on frame (max 30 chars)."),
        frame_color: z.string().regex(/^#[0-9A-Fa-f]{6}$/).optional().describe("Frame background color."),
        frame_text_color: z.string().regex(/^#[0-9A-Fa-f]{6}$/).optional().describe("Frame text color."),
      }),
      handler: async (input: Record<string, unknown>) => {
        const { facebook, instagram, twitter, linkedin, youtube, tiktok, github, website, ...rest } = input;
        return apiRequest("/api/qr", {
          method: "POST",
          body: { type: "social", social_data: { facebook, instagram, twitter, linkedin, youtube, tiktok, github, website }, ...rest },
        });
      },
    },
  • Input schema for create_social_qr tool using Zod. Defines optional social media links (facebook, instagram, twitter, linkedin, youtube, tiktok, github, website), a label, format (svg/png), and styling options (colors, dot/corner styles, logo, frame settings).
    inputSchema: z.object({
      facebook: z.string().optional().describe("Facebook profile/page URL."),
      instagram: z.string().optional().describe("Instagram profile URL."),
      twitter: z.string().optional().describe("Twitter/X profile URL."),
      linkedin: z.string().optional().describe("LinkedIn profile URL."),
      youtube: z.string().optional().describe("YouTube channel URL."),
      tiktok: z.string().optional().describe("TikTok profile URL."),
      github: z.string().optional().describe("GitHub profile URL."),
      website: z.string().optional().describe("Personal/company website URL."),
      label: z.string().optional().describe("Label for this QR code."),
      format: z.enum(["svg", "png"]).default("svg").describe("Image format."),
      foreground_color: z.string().regex(/^#[0-9A-Fa-f]{6}$/).optional().describe("Hex color for dots."),
      background_color: z.string().regex(/^#[0-9A-Fa-f]{6}$/).optional().describe("Hex color for background."),
      dot_style: z.enum(["square", "rounded", "dots", "classy-rounded"]).optional().describe("Dot shape."),
      corner_style: z.enum(["square", "extra-rounded", "dot"]).optional().describe("Corner shape."),
      logo_url: z.string().optional().describe("Logo URL or data URI."),
      frame_style: z.enum(["none", "banner_bottom", "banner_top", "rounded"]).optional().describe("Frame style around QR."),
      frame_text: z.string().max(30).optional().describe("CTA text on frame (max 30 chars)."),
      frame_color: z.string().regex(/^#[0-9A-Fa-f]{6}$/).optional().describe("Frame background color."),
      frame_text_color: z.string().regex(/^#[0-9A-Fa-f]{6}$/).optional().describe("Frame text color."),
    }),
  • Registration loop in the MCP server. Iterates over all tools (including create_social_qr) and registers each with the McpServer via server.tool(), wiring up the description, inputSchema, and handler.
    for (const [name, tool] of Object.entries(tools)) {
      server.tool(
        name,
        tool.description,
        tool.inputSchema.shape,
        async (input: Record<string, unknown>) => {
          try {
            const result = await tool.handler(input as any);
            return {
              content: [
                {
                  type: "text" as const,
                  text: JSON.stringify(result, null, 2),
                },
              ],
            };
          } catch (error) {
            const message = error instanceof Error ? error.message : String(error);
            return {
              content: [
                {
                  type: "text" as const,
                  text: JSON.stringify({
                    error: message,
                    hint: "Check the input parameters and try again. Use list_qr_codes to verify available QR codes.",
                  }),
                },
              ],
              isError: true,
            };
          }
        }
      );
    }
  • The apiRequest helper used by the create_social_qr handler to make HTTP POST requests to the backend API with X-API-Key authentication.
    export async function apiRequest(path: string, options: RequestOptions = {}) {
      const { method = "GET", body, query } = options;
    
      let url = `${BASE_URL}${path}`;
      if (query) {
        const params = new URLSearchParams();
        for (const [key, value] of Object.entries(query)) {
          params.set(key, String(value));
        }
        url += `?${params.toString()}`;
      }
    
      const headers: Record<string, string> = {
        "X-API-Key": API_KEY,
      };
    
      if (body) {
        headers["Content-Type"] = "application/json";
      }
    
      const res = await fetch(url, {
        method,
        headers,
        body: body ? JSON.stringify(body) : undefined,
      });
    
      return res.json();
    }
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations, the description partially covers behavioral traits: it mentions the JSON return via short URL and the need for at least one platform link. It does not disclose side effects, authorization needs, or rate limits, so transparency is adequate but not comprehensive.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is extremely concise: two sentences covering purpose, behavior, and a requirement. No redundant or filler content; every sentence earns its place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (19 parameters, no output schema, no annotations), the description explains the core function and a key constraint. However, it lacks details on output format, defaults (e.g., format=svg), and possible side effects, making it somewhat incomplete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the baseline is 3. The description adds value by imposing the constraint 'Provide at least one platform link,' which is not in the schema. Otherwise, it does not elaborate on parameter semantics beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Create' and the resource 'QR code that links to social media profiles', distinguishing it from sibling tools like create_email_qr or create_phone_qr. It also adds unique behavioral details (returns JSON when scanned).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description includes a clear requirement: 'Provide at least one platform link.' This guides the agent on minimum inputs. However, it does not explicitly mention when not to use this tool or compare it to alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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