provider_enrich

Instructions

Implementation Reference

• src/tools.js:224-232 (schema)

  Tool definition for 'provider_enrich' including name, description, price ($0.05), endpoint (/agent/v1/providers/enrich), and Zod schema requiring a 10-digit NPI number.

  {
    name: 'provider_enrich',
    description: 'AI-enriched provider intelligence from NPI number. Returns practice details, specialties, affiliations, and market context.',
    price: '$0.05',
    endpoint: '/agent/v1/providers/enrich',
    schema: {
      npi: z.string().describe('10-digit NPI number'),
    },
  },

• src/index.js:17-62 (registration)

  Generic tool registration loop (s.tool()) that registers all tools from MCP_TOOLS including 'provider_enrich'. The handler proxies requests to the external API endpoint.

  function createMcpServer() {
    const s = new McpServer({ name: 'mymedi-ai', version: '1.2.1' });
    for (const tool of MCP_TOOLS) {
      s.tool(tool.name, tool.description, tool.schema, async (params) => {
        const toolDef = getToolByName(tool.name);
        if (!toolDef) {
          return { content: [{ type: 'text', text: `Unknown tool: ${tool.name}` }], isError: true };
        }
        try {
          const response = await fetch(`${API_BASE_URL}${toolDef.endpoint}`, {
            method: 'POST',
            headers: {
              'Content-Type': 'application/json',
              ...(API_KEY && { 'X-API-Key': API_KEY }),
              'X-Agent-ID': 'mcp-client',
              'User-Agent': '@mymedi-ai/mcp-server/1.2.1',
            },
            body: JSON.stringify(params),
          });
          if (response.status === 402) {
            const paymentInfo = await response.json();
            return {
              content: [{ type: 'text', text: JSON.stringify({
                error: 'payment_required',
                message: `This tool costs ${toolDef.price} per call. Register at ${API_BASE_URL}/bot-marketplace/register for an API key with 10 free starter credits, or pay per call with on-chain USDC (no signup) via the x402 protocol.`,
                price: toolDef.price, register: `${API_BASE_URL}/bot-marketplace/register`, ...paymentInfo,
              }, null, 2) }], isError: true,
            };
          }
          if (!response.ok) {
            const error = await response.json().catch(() => ({ message: response.statusText }));
            return { content: [{ type: 'text', text: JSON.stringify({ error: true, status: response.status, ...error }, null, 2) }], isError: true };
          }
          const data = await response.json();
          const creditsSpent = response.headers.get('X-Credits-Spent');
          const creditsRemaining = response.headers.get('X-Credits-Remaining');
          if (creditsSpent) {
            data._billing = { creditsSpent: parseInt(creditsSpent, 10), creditsRemaining: creditsRemaining ? parseInt(creditsRemaining, 10) : undefined, priceUSD: toolDef.price };
          }
          return { content: [{ type: 'text', text: JSON.stringify(data, null, 2) }] };
        } catch (err) {
          return { content: [{ type: 'text', text: JSON.stringify({ error: true, message: err.message, hint: 'Ensure MCP_API_BASE_URL and MCP_API_KEY environment variables are set.' }, null, 2) }], isError: true };
        }
      });
    }
    return s;

• src/index.js:20-60 (handler)

  Generic async handler for all tools including 'provider_enrich'. Calls the external REST API at /agent/v1/providers/enrich with the npi parameter, handles 402 payment responses, error responses, and billing headers.

  s.tool(tool.name, tool.description, tool.schema, async (params) => {
    const toolDef = getToolByName(tool.name);
    if (!toolDef) {
      return { content: [{ type: 'text', text: `Unknown tool: ${tool.name}` }], isError: true };
    }
    try {
      const response = await fetch(`${API_BASE_URL}${toolDef.endpoint}`, {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
          ...(API_KEY && { 'X-API-Key': API_KEY }),
          'X-Agent-ID': 'mcp-client',
          'User-Agent': '@mymedi-ai/mcp-server/1.2.1',
        },
        body: JSON.stringify(params),
      });
      if (response.status === 402) {
        const paymentInfo = await response.json();
        return {
          content: [{ type: 'text', text: JSON.stringify({
            error: 'payment_required',
            message: `This tool costs ${toolDef.price} per call. Register at ${API_BASE_URL}/bot-marketplace/register for an API key with 10 free starter credits, or pay per call with on-chain USDC (no signup) via the x402 protocol.`,
            price: toolDef.price, register: `${API_BASE_URL}/bot-marketplace/register`, ...paymentInfo,
          }, null, 2) }], isError: true,
        };
      }
      if (!response.ok) {
        const error = await response.json().catch(() => ({ message: response.statusText }));
        return { content: [{ type: 'text', text: JSON.stringify({ error: true, status: response.status, ...error }, null, 2) }], isError: true };
      }
      const data = await response.json();
      const creditsSpent = response.headers.get('X-Credits-Spent');
      const creditsRemaining = response.headers.get('X-Credits-Remaining');
      if (creditsSpent) {
        data._billing = { creditsSpent: parseInt(creditsSpent, 10), creditsRemaining: creditsRemaining ? parseInt(creditsRemaining, 10) : undefined, priceUSD: toolDef.price };
      }
      return { content: [{ type: 'text', text: JSON.stringify(data, null, 2) }] };
    } catch (err) {
      return { content: [{ type: 'text', text: JSON.stringify({ error: true, message: err.message, hint: 'Ensure MCP_API_BASE_URL and MCP_API_KEY environment variables are set.' }, null, 2) }], isError: true };
    }
  });

• src/tools.js:255-257 (helper)

  getToolByName helper function that looks up a tool definition by name from the MCP_TOOLS array.

  export function getToolByName(name) {
    return MCP_TOOLS.find((t) => t.name === name);
  }