diff --git a/antd-swift/Sources/AntdSdk/AntdRestClient.swift b/antd-swift/Sources/AntdSdk/AntdRestClient.swift
index 43115bf..ed24372 100644
--- a/antd-swift/Sources/AntdSdk/AntdRestClient.swift
+++ b/antd-swift/Sources/AntdSdk/AntdRestClient.swift
@@ -67,7 +67,7 @@ public final class AntdRestClient: AntdClientProtocol, @unchecked Sendable {
     public func health() async throws -> HealthStatus {
         do {
             let resp: HealthResponseDTO = try await getJSON("/health")
-            return HealthStatus(ok: resp.status == "ok", network: resp.network ?? "unknown")
+            return resp.toHealthStatus()
         } catch {
             return HealthStatus(ok: false, network: "unknown")
         }
@@ -251,6 +251,25 @@ public final class AntdRestClient: AntdClientProtocol, @unchecked Sendable {
 private struct HealthResponseDTO: Decodable {
     let status: String?
     let network: String?
+    let version: String?
+    let evm_network: String?
+    let uptime_seconds: UInt64?
+    let build_commit: String?
+    let payment_token_address: String?
+    let payment_vault_address: String?
+
+    func toHealthStatus() -> HealthStatus {
+        HealthStatus(
+            ok: status == "ok",
+            network: network ?? "unknown",
+            version: version ?? "",
+            evmNetwork: evm_network ?? "",
+            uptimeSeconds: uptime_seconds ?? 0,
+            buildCommit: build_commit ?? "",
+            paymentTokenAddress: payment_token_address ?? "",
+            paymentVaultAddress: payment_vault_address ?? ""
+        )
+    }
 }
 
 private struct CostAddressDTO: Decodable {
diff --git a/antd-swift/Sources/AntdSdk/Models.swift b/antd-swift/Sources/AntdSdk/Models.swift
index 5aa8026..7f24db6 100644
--- a/antd-swift/Sources/AntdSdk/Models.swift
+++ b/antd-swift/Sources/AntdSdk/Models.swift
@@ -1,13 +1,39 @@
 import Foundation
 
 /// Health check result from the antd daemon.
+///
+/// The diagnostic fields (`version`, `evmNetwork`, `uptimeSeconds`,
+/// `buildCommit`, `paymentTokenAddress`, `paymentVaultAddress`) were added in
+/// antd 0.4.0. They default to `""` / `0` so the struct stays usable when
+/// talking to a pre-0.4.0 daemon that doesn't report them.
 public struct HealthStatus: Sendable, Equatable {
     public let ok: Bool
     public let network: String
+    public let version: String
+    public let evmNetwork: String
+    public let uptimeSeconds: UInt64
+    public let buildCommit: String
+    public let paymentTokenAddress: String
+    public let paymentVaultAddress: String
 
-    public init(ok: Bool, network: String) {
+    public init(
+        ok: Bool,
+        network: String,
+        version: String = "",
+        evmNetwork: String = "",
+        uptimeSeconds: UInt64 = 0,
+        buildCommit: String = "",
+        paymentTokenAddress: String = "",
+        paymentVaultAddress: String = ""
+    ) {
         self.ok = ok
         self.network = network
+        self.version = version
+        self.evmNetwork = evmNetwork
+        self.uptimeSeconds = uptimeSeconds
+        self.buildCommit = buildCommit
+        self.paymentTokenAddress = paymentTokenAddress
+        self.paymentVaultAddress = paymentVaultAddress
     }
 }
 
diff --git a/antd-swift/Tests/AntdSdkTests/SmokeTests.swift b/antd-swift/Tests/AntdSdkTests/SmokeTests.swift
index f25dce6..ee3a41e 100644
--- a/antd-swift/Tests/AntdSdkTests/SmokeTests.swift
+++ b/antd-swift/Tests/AntdSdkTests/SmokeTests.swift
@@ -25,6 +25,26 @@ final class SmokeTests: XCTestCase {
         let health = HealthStatus(ok: true, network: "local")
         XCTAssertTrue(health.ok)
         XCTAssertEqual(health.network, "local")
+        // Diagnostic fields default to empty / 0 for the 2-arg init,
+        // so callers + pre-0.4.0 daemon responses both still work.
+        XCTAssertEqual(health.version, "")
+        XCTAssertEqual(health.evmNetwork, "")
+        XCTAssertEqual(health.uptimeSeconds, 0)
+        XCTAssertEqual(health.buildCommit, "")
+
+        let fullHealth = HealthStatus(
+            ok: true,
+            network: "default",
+            version: "0.4.0",
+            evmNetwork: "arbitrum-one",
+            uptimeSeconds: 42,
+            buildCommit: "abcdef123456",
+            paymentTokenAddress: "0xtoken",
+            paymentVaultAddress: "0xvault"
+        )
+        XCTAssertEqual(fullHealth.version, "0.4.0")
+        XCTAssertEqual(fullHealth.evmNetwork, "arbitrum-one")
+        XCTAssertEqual(fullHealth.uptimeSeconds, 42)
 
         let put = PutResult(cost: "100", address: "abc123")
         XCTAssertEqual(put.cost, "100")