Create Farcaster-Fid-add.md

_posts/Farcaster-Fid-add.md

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+console.log("Args received:", args);
+console.log("Secrets received:", secrets);
+
+const fid = args[0];
+const expectedAddress = args[1];
+
+if (!fid || !expectedAddress) {
+  throw Error("Invalid input: FID or expected address missing");
+}
+
+const neynarApiKey = secrets.NEYNAR_API_KEY;
+
+try {
+  const response = await Functions.makeHttpRequest({
+    url: `https://api.neynar.com/v2/farcaster/user/bulk/?fids=${fid}`,
+    headers: {
+      'api_key': neynarApiKey
+    }
+  });
+
+  console.log("API response:", JSON.stringify(response, null, 2));
+
+  if (response.error) {
+    throw Error(`API Error: ${response.error}`);
+  }
+
+  const userData = response.data?.users?.[0];
+
+  if (!userData || !userData.custody_address) {
+    throw Error("No custody address found for the given FID");
+  }
+
+  const custodyAddress = userData.custody_address.toLowerCase();
+  const expectedAddressLower = expectedAddress.toLowerCase();
+
+  console.log("Custody address:", custodyAddress);
+  console.log("Expected address:", expectedAddressLower);
+
+  const isValid = custodyAddress === expectedAddressLower;
+
+  return Functions.encodeString(isValid ? "true" : "false");
+
+
+} catch (error) {
+  console.log("Caught error:", error.message || error);
+  throw Error(`Verification failed: ${error.message || error}`);
+}