invoice-parse

Instructions

Implementation Reference

• src/index.ts:138-144 (schema)

  Input schema definition for the 'invoice-parse' tool. Defines the tool's name, description, and input parameters (document_url).

  {
    name: "invoice-parse",
    description: "Extract structured line items, totals, and dates from an invoice or receipt. Cost: 3 credits.",
    inputSchema: {
      document_url: z.string().describe("URL to invoice PDF or image"),
    },
  },

• src/index.ts:240-259 (registration)

  Server setup and tool registration. All capabilities (including invoice-parse) are dynamically registered as MCP tools using server.registerTool(). The handler calls the Suprsonic REST API with the capability name.

  function createServer(): McpServer {
    const server = new McpServer(
      { name: "suprsonic", version: "0.1.0" },
      { capabilities: { logging: {} } },
    );
  
    // Register each capability as an MCP tool
    for (const cap of CAPABILITIES) {
      // Cast inputSchema to avoid TS2589 (excessively deep type instantiation from Zod chains)
      server.registerTool(
        cap.name,
        {
          description: cap.description,
          inputSchema: cap.inputSchema as any,
        },
        async (args: any): Promise<CallToolResult> => {
          return callSuprsonic(cap.name, args as Record<string, unknown>);
        },
      );
    }

• src/index.ts:183-234 (handler)

  Generic HTTP handler that executes all tools including invoice-parse. It calls the Suprsonic REST API at /v1/agent with the capability name ('invoice-parse') and its parameters, then returns the result.

  async function callSuprsonic(capability: string, params: Record<string, unknown>): Promise<CallToolResult> {
    if (!API_KEY) {
      return {
        content: [{ type: "text", text: "Error: SUPRSONIC_API_KEY environment variable is not set. Get your key at https://suprsonic.ai/app/apis" }],
        isError: true,
      };
    }
  
    try {
      const resp = await fetch(`${BASE_URL}/v1/agent`, {
        method: "POST",
        headers: {
          "Authorization": `Bearer ${API_KEY}`,
          "Content-Type": "application/json",
        },
        body: JSON.stringify({ capability, params }),
      });
  
      const result = await resp.json() as any;
  
      // Handle non-envelope responses (401, 429, etc. return {"detail": ...})
      if (result.detail && result.success === undefined) {
        const msg = typeof result.detail === "object" ? (result.detail.title || result.detail.detail || JSON.stringify(result.detail)) : String(result.detail);
        return {
          content: [{ type: "text", text: `Error (HTTP ${resp.status}): ${msg}` }],
          isError: true,
        };
      }
  
      if (!result.success) {
        const errMsg = result.error?.detail || result.error?.title || "Request failed";
        return {
          content: [{ type: "text", text: `Error: ${errMsg}` }],
          isError: true,
        };
      }
  
      const text = JSON.stringify(result.data, null, 2);
      const meta = result.metadata
        ? `\n\n[Provider: ${(result.metadata as any).provider_used || "unknown"}, ${(result.metadata as any).response_time_ms || 0}ms, ${result.credits_used || 0} credits]`
        : "";
  
      return {
        content: [{ type: "text", text: text + meta }],
      };
    } catch (err) {
      return {
        content: [{ type: "text", text: `Network error: ${err instanceof Error ? err.message : String(err)}` }],
        isError: true,
      };
    }
  }