Error handling

import { Obscura, ObscuraError } from "@obscura-app/sdk";

const agent = new Obscura({
apiKey: process.env.OBSCURA_KEY!,
baseUrl: process.env.OBSCURA_BASE_URL!,
});

try {
const res = await agent.fetch(url);
return await res.json();
} catch (err) {
if (err instanceof ObscuraError) {
  switch (err.code) {
    case "over_cap":
      // Monthly spend cap hit. Raise it in the dashboard or wait
      // for the calendar-month reset.
      throw new Error("This agent has no budget left this month.");
    case "insufficient_funds":
      // Encrypted balance is below the requested amount. Top up.
      throw new Error("Agent needs a top-up before retrying.");
    case "agent_inactive":
      // Agent paused or cancelled in the dashboard.
      throw new Error("Agent is inactive.");
    case "invalid_token":
      // API key revoked, rotated, or mistyped.
      throw new Error("Obscura API key invalid — rotate in dashboard.");
    case "invalid_challenge":
      // The merchant sent a malformed 402 — not your fault.
      throw new Error("Merchant payment request was invalid.");
    case "conflict":
      // The same spend intent is already in flight. Don't retry.
      throw new Error("Duplicate spend already processing — wait, don't retry.");
    case "signing_failed":
      // Umbra didn't finalize. May be in flight on-chain — DON'T retry
      // until reconciliation has run, or you risk double-charging.
      throw new Error("Payment is in flight — check status before retrying.");
    case "network_error":
    case "timeout":
      // Couldn't reach Obscura, or the sign request exceeded the timeout.
      throw new Error("Obscura unreachable — retry in a moment.");
    default:
      throw err;
  }
}
throw err;
}