proxy-mcp

Instructions

Implementation Reference

• src/tools/upstream.ts:55-79 (handler)

  Implementation of the proxy_set_host_upstream tool handler.

  server.tool(
    "proxy_set_host_upstream",
    "Set a per-host upstream proxy override. Traffic to this hostname will use the specified proxy instead of the global one.",
    {
      hostname: z.string().describe("Hostname to override (e.g., api.example.com)"),
      proxy_url: z.string().describe("Upstream proxy URL for this host"),
      no_proxy: z.array(z.string()).optional().describe("Hostnames to bypass this proxy"),
    },
    async ({ hostname, proxy_url, no_proxy }) => {
      try {
        await proxyManager.setHostUpstream(hostname, { proxyUrl: proxy_url, noProxy: no_proxy });
        return {
          content: [{
            type: "text",
            text: JSON.stringify({
              status: "success",
              message: `Upstream for '${hostname}' set to ${proxy_url}`,
            }),
          }],
        };
      } catch (e) {
        return { content: [{ type: "text", text: JSON.stringify({ status: "error", error: String(e) }) }] };
      }
    },
  );