Adding Server to Server Authentication

[leogdion]

Summary by CodeRabbit

• New Features
  • Unified authentication with API token, web auth, and server-to-server options, including request signing and optional key rotation.
  • In-memory credential storage and adaptive token management with refresh policies.
  • New CloudKitService and MistKitClient initializers plus user/zones/query operations.
• Improvements
  • Centralized CloudKit errors and safer logging with token masking.
• Documentation
  • New README, docs, and environment variable guide; examples add testing flags and workflows.
• CI
  • Windows builds added; upgraded actions and Swift 6.2 support.
• Chores
  • Expanded .gitignore to protect keys/certs.
• Tests
  • Extensive suites for authentication and middleware.

[claude]

Comprehensive Code Review: Server-to-Server Authentication Implementation

This is an impressive implementation that adds comprehensive authentication support to MistKit. Below is my detailed analysis:

✅ Strengths

Architecture & Design

• Protocol-oriented approach: Clean TokenManager protocol with consistent interface across all authentication methods
• Proper Swift concurrency: Excellent use of async/await, actors for thread safety (AdaptiveTokenManager)
• Type safety: Strong typing with enums for authentication methods and comprehensive error handling
• Separation of concerns: Well-organized into focused modules (authentication, storage, validation)

Security Implementation

• Crypto framework usage: Proper ECDSA P-256 implementation using Apple's Crypto framework
• Secure logging: Excellent SecureLogging utility that masks sensitive tokens in logs
• Input validation: Comprehensive validation for all credential types with specific error messages
• Memory safety: Private key data properly handled and protected from exposure

Error Handling

• Typed errors: TokenManagerError with specific InvalidCredentialReason cases
• Localized descriptions: Proper error messages for debugging and user feedback
• Graceful degradation: AdaptiveTokenManager can fall back between authentication modes

Testing Coverage

• Comprehensive test suite: 66 test files covering all authentication methods
• Edge case testing: Tests for validation, error conditions, and transitions
• Performance tests: Included for critical paths
• Platform availability: Proper handling of OS-specific features

🔍 Code Quality Observations

Best Practices Followed

• Modern Swift 6.0 features and strict concurrency
• Sendable compliance throughout
• Proper availability annotations for platform-specific features
• Documentation with DocC format

Performance Considerations

• Efficient regex patterns cached as static properties
• Actor isolation prevents data races in AdaptiveTokenManager
• Lazy evaluation where appropriate

⚠️ Areas for Attention

Security Considerations

1. Private key storage: While current implementation is secure, consider adding keychain integration for production apps
2. Token rotation: Server-to-server implementation should document token rotation best practices
3. Audit trail: Consider adding authentication event logging for enterprise use

API Design

1. Error propagation: Some async methods use typed throws which is excellent for Swift 6.0
2. Initialization: Multiple convenience initializers could benefit from clearer documentation about when to use each

Documentation

1. Security guide: The comprehensive testing documentation is excellent - consider adding similar security best practices guide
2. Migration path: Clear guidance for upgrading from API-only to web authentication

🚀 Notable Implementation Details

Adaptive Authentication

The AdaptiveTokenManager actor provides excellent progressive authentication that can start with API-only and upgrade to web auth.

Request Signing

Clean, focused RequestSignature struct with proper header generation for CloudKit Web Services.

Secure Token Masking

Prevents credential leaks in logs with maskAPIToken method that shows only prefix/suffix.

📋 Recommendations

Immediate

1. ✅ Code follows Swift style guidelines
2. ✅ Proper error handling with typed errors
3. ✅ Comprehensive test coverage
4. ✅ Security best practices implemented

Future Enhancements

1. Consider adding keychain integration for production credential storage
2. Add authentication event logging for audit requirements
3. Document server-to-server key rotation procedures
4. Consider adding authentication analytics/metrics

🎯 Overall Assessment

This is a high-quality implementation that demonstrates:

• Strong understanding of CloudKit Web Services authentication
• Excellent Swift coding practices and modern language features
• Comprehensive security considerations
• Thoughtful API design with backward compatibility
• Thorough testing approach

The code is production-ready with proper error handling, security measures, and comprehensive documentation. The progressive authentication approach (AdaptiveTokenManager) is particularly well-designed for real-world usage patterns.

Recommendation: ✅ Approve with confidence

This implementation sets a strong foundation for CloudKit Web Services authentication in Swift, with excellent attention to security, usability, and maintainability.

[claude]

Code Review: Server-to-Server Authentication Implementation

This PR introduces a comprehensive authentication system for MistKit with server-to-server authentication support. Here's my detailed review:

⭐ Strengths

🏗️ Architecture & Design

• Excellent Protocol-Oriented Design: The TokenManager protocol provides a clean abstraction for different authentication methods
• Modern Swift Adoption: Proper use of Swift 6 features including actors, typed throws, and Sendable compliance
• Adaptive Authentication: The AdaptiveTokenManager allows seamless transitions between API-only and web authentication
• Security-First Approach: Server-to-server authentication uses industry-standard ECDSA P-256 signing

💾 Code Quality

• Strong Type Safety: Comprehensive use of enums for authentication methods and error handling
• Concurrency Safety: Actor-based implementations ensure thread-safe operations
• Error Handling: Well-structured error hierarchy with typed throws and detailed error messages
• Clean Separation: Clear boundaries between authentication methods and credential management

🔐 Security Implementation

• Proper Cryptography: Uses Apple's Crypto framework for ECDSA P-256 operations
• Key Management: Secure handling of private keys with proper validation
• Token Validation: Robust format validation for API tokens and web auth tokens
• Memory Safety: Private keys stored securely as Data without string conversions

✅ Testing Coverage

• Comprehensive Test Suite: 52 test files covering 47 source files (110% test-to-source ratio)
• Multiple Test Categories: Unit tests, integration tests, edge cases, and performance tests
• Modern Testing Framework: Uses Swift Testing instead of XCTest for better async support

🔍 Areas for Consideration

🔐 Security Enhancements

1. Private Key Storage: Consider adding keychain integration for production environments
2. Token Rotation: While refresh mechanisms exist, consider implementing automatic key rotation schedules for enterprise deployments

⚡ Performance Optimizations

1. Signature Caching: Consider caching signatures for repeated operations to improve performance
2. Async Optimization: Some validation methods could benefit from concurrent execution

📚 Documentation & Usability

1. Developer Experience: Add more comprehensive documentation for CloudKit setup and key generation
2. Error Recovery: Consider adding specific guidance for common authentication failures

🏅 Best Practices Observed

• ✅ CLAUDE.md Compliance: Follows all project guidelines for Swift 6 and modern architecture
• ✅ Dependency Management: Proper use of swift-crypto and OpenAPI dependencies
• ✅ Code Organization: Clean file structure with logical separation of concerns
• ✅ Platform Support: Cross-platform compatibility (macOS, iOS, tvOS, watchOS, visionOS, Linux)
• ✅ Swift Package Standards: Proper Package.swift configuration with modern Swift settings

🚀 Performance Assessment

• Memory Efficiency: Actor-based design minimizes memory overhead
• Concurrent Operations: Proper async/await usage for non-blocking operations
• Resource Management: Appropriate use of weak references and proper cleanup

🛡️ Security Validation

• Authentication Methods: All three methods (API token, web auth, server-to-server) properly implemented
• Key Validation: Comprehensive validation prevents invalid key usage
• Error Handling: No sensitive information leaked in error messages
• Thread Safety: Actor isolation ensures safe concurrent access

📊 Test Quality

The test suite demonstrates excellent coverage with:

• 52 test files covering authentication, storage, middleware, and core functionality
• Edge Case Testing: Comprehensive error scenarios and boundary conditions
• Performance Tests: Dedicated performance validation for concurrent operations
• Integration Tests: End-to-end authentication flow validation

🎯 Recommendation

✅ APPROVE - This is a well-architected, secure, and thoroughly tested implementation. The code follows modern Swift best practices and provides a solid foundation for CloudKit Web Services authentication.

The implementation demonstrates:

• Strong adherence to security best practices
• Excellent code organization and maintainability
• Comprehensive error handling and validation
• Modern Swift concurrency patterns
• Robust test coverage

This PR significantly enhances MistKit's authentication capabilities while maintaining code quality and security standards.

---

Review completed using Claude Code - analyzing 14,247 lines of changes across authentication system, tests, and CI improvements.

[leogdion]

@coderabbitai full review

[coderabbitai]

✅ Actions performed

Full review triggered.

[coderabbitai]

Actionable comments posted: 22

Caution

Some comments are outside the diff and can’t be posted inline due to platform limitations.

⚠️ Outside diff range comments (4)

Sources/MistKit/Authentication/CharacterMapEncoder.swift (1)

34-54: Visibility change breaks previously public API

CharacterMapEncoder and its members used to be public. Consumers who depended on that encoder to prepare their own CloudKit tokens will now hit a compile error because the type is no longer exported. Unless we are making a coordinated major release with deprecation guidance, we should restore the public visibility (or expose an equivalent replacement). Please revert the access level adjustments or add a new public surface before merging.

-internal struct CharacterMapEncoder: Sendable {
-  internal static let defaultCharacterMap: [Character: String] = [
+public struct CharacterMapEncoder: Sendable {
+  public static let defaultCharacterMap: [Character: String] = [
...
-  internal init(characterMap: [Character: String] = defaultCharacterMap) {
+  public init(characterMap: [Character: String] = defaultCharacterMap) {
...
-  internal func encode(_ token: String) -> String {
+  public func encode(_ token: String) -> String {

Sources/MistKit/CustomFieldValue.swift (1)

51-87: Preserve 64-bit width for custom field INT64 payloads

Changing CustomFieldValuePayload.int64Value (and its decoder) to Int undercuts the CloudKit contract and will now throw for values outside Int32 when running on 32-bit platforms. Please keep this payload as Int64 and decode accordingly to maintain the documented range.

-    case int64Value(Int)
+    case int64Value(Int64)
...
-        .int64: { .int64Value(try $0.decode(Int.self, forKey: .value)) },
+        .int64: { .int64Value(try $0.decode(Int64.self, forKey: .value)) },

Examples/Package.resolved (1)

85-91: Align swift-crypto pin with the root package.

Tests and examples now depend on MistKit’s updated swift-crypto requirement (3.15.1 per Package.resolved at the repo root). Leaving this file at 3.14.0 causes SwiftPM to reject the resolution for the example package and forces a re-resolve before it will build. Please bump the pin here to match the root file.

-        "revision" : "334e682869394ee239a57dbe9262bff3cd9495bd",
-        "version" : "3.14.0"
+        "revision" : "95ba0316a9b733e92bb6b071255ff46263bbe7dc",
+        "version" : "3.15.1"

Sources/MistKit/LoggingMiddleware.swift (1)

63-67: Mask CloudKit signing headers before logging

With server-to-server signing now enabled, request.headerFields includes X-Apple-CloudKit-Request-SignatureV1. Logging the entire header field set verbatim exposes the raw ECDSA signature (and key identifiers) to anyone with debug log access, which is effectively equivalent to leaking credentials. We need to mask these sensitive headers just like we now mask sensitive query parameters.

-      print("   Headers: \(request.headerFields)")
+      print("   Headers:")
+      for field in request.headerFields {
+        let lowercasedName = field.name.rawName.lowercased()
+        let shouldMask = lowercasedName.contains("token")
+          || lowercasedName.contains("key")
+          || lowercasedName.contains("secret")
+          || lowercasedName.contains("auth")
+          || field.name == .cloudKitRequestSignatureV1
+        let value = shouldMask ? SecureLogging.maskToken(field.value) : field.value
+        print("     \(field.name.rawName): \(value)")
+      }

🧹 Nitpick comments (14)

Sources/MistKit/Authentication/DependencyResolutionError.swift (1)

30-75: Remove fully commented-out placeholder file

This file is entirely comments (even duplicating the header block) and brings in no executable declarations. It looks like a placeholder for DependencyResolutionError that never got implemented—please either restore the intended type or drop the file so we don't ship inert scaffolding.

CLAUDE.md (1)

152-153: Wrap bare URL to satisfy markdownlint

markdownlint (MD034) flags the bare URL here; please convert it to a Markdown link so the lint step stays clean.

-- type order is based on the default in swiftlint: https://realm.github.io/SwiftLint/type_contents_order.html
+- type order is based on the default in swiftlint: [SwiftLint type contents order](https://realm.github.io/SwiftLint/type_contents_order.html)

Based on static analysis hints.

.devcontainer/swift-6.2/devcontainer.json (1)

3-3: Pin the Swift base image to a distro-specific tag.

swift:6.2 is a floating tag; upstream can move it to a different distro or patch level and unexpectedly break the devcontainer. Please pin to a distro-qualified tag (e.g., swift:6.2-jammy) or the exact patch you need so the image stays aligned with CI.

-  "image": "swift:6.2",
+  "image": "swift:6.2-jammy",

Tests/MistKitTests/Authentication/Protocol/TokenManagerErrorTests.swift (1)

23-34: Avoid brittle string-matching in localizedDescription tests.

These assertions hard-code substrings of localizedDescription, so any future copy tweak (or localization change) will break the test without a real regression. Prefer comparing the underlying enum cases or a dedicated accessor exposed for testing.

Examples/ENVIRONMENT_VARIABLES.md (4)

39-43: Add language hint to fenced code snippet.

Markdown lint (MD040) flags this block because it lacks a language qualifier. Append text (or another appropriate identifier) to the triple backticks to silence the warning and improve readability.

Based on learnings

---

113-116: Add language hint to fenced code snippet.

This error example block also lacks a language specifier; add text (or similar) to address the lint warning and keep formatting consistent.

Based on learnings

---

121-123: Add language hint to fenced code snippet.

Same lint warning (MD040) here; declare a language such as text after the opening backticks.

Based on learnings

---

128-130: Add language hint to fenced code snippet.

Specify a language identifier (e.g., text) for this fenced block to satisfy markdownlint and improve highlighting.

Based on learnings

Tests/MistKitTests/Authentication/Protocol/TokenManagerTests.swift (1)

14-28: Wire the constructed credentials into the mock.
We build AuthenticationMethod/TokenCredentials, but the mock never sees them, so the assertions only cover whatever state MockTokenManager ships with by default. Please feed the credentials into the mock (or initialize the subject under test with them) so this test actually exercises the integration path it advertises.

Tests/MistKitTests/Authentication/WebAuth/BasicTests.swift (1)

35-45: initializationWithStorage currently duplicates the non-storage case

The test named “initialization with storage” runs the exact same initializer path as the preceding test, so we never exercise whatever storage-backed initializer we intended to cover. Could you either wire the storage-capable initializer (if available) or rename the test to avoid giving a false sense of coverage?

Tests/MistKitTests/AuthenticationMiddleware/AuthenticationMiddleware+TestHelpers.swift (1)

10-23: Allow passing an HTTPBody through the test helper

The helper always forwards body: nil, so any middleware behavior that depends on a non-empty body can’t be exercised with this API. Exposing a parameter (defaulting to nil) keeps the ergonomics while letting tests cover body-aware paths.

   internal func interceptWithMiddleware(
     request: HTTPRequest,
+    body: HTTPBody? = nil,
     baseURL: URL,
     operationID: String,
     next: @escaping (HTTPRequest, HTTPBody?, URL) async throws -> (HTTPResponse, HTTPBody?)
   ) async -> Bool {
     do {
       _ = try await intercept(
         request,
-        body: nil as HTTPBody?,
+        body: body,
         baseURL: baseURL,
         operationID: operationID,
         next: next
       )

Sources/MistKit/Authentication/RequestSignature.swift (1)

30-30: Avoid re-exporting Foundation from MistKit

public import Foundation widens the library’s public surface and contradicts earlier guidance. A plain import keeps the API focused.

-public import Foundation
+import Foundation

Sources/MistKit/Authentication/WebAuthTokenManager.swift (1)

43-67: Reduce credential validation duplication

hasCredentials repeats the same validation checks as validateCredentials(). Reusing the validator keeps the logic in one place and guarantees these two entry points never drift apart.

   public var hasCredentials: Bool {
     get async {
-      // Check if tokens are non-empty and have valid format
-      guard !apiToken.isEmpty && !webAuthToken.isEmpty else {
-        return
-          false
-      }
-
-      // Check API token format (64-character hex string)
-      let regex = NSRegularExpression.apiTokenRegex
-      let matches = regex.matches(in: apiToken)
-      guard !matches.isEmpty else {
-        return
-          false
-      }
-
-      // Check web auth token length (at least 10 characters)
-      guard webAuthToken.count >= 10 else {
-        return
-          false
-      }
-
-      return true
+      (try? await validateCredentials()) ?? false
     }
   }

Sources/MistKit/Authentication/InMemoryTokenStorage.swift (1)

68-157: Expired tokens linger in count/list results

Line 68 returns identifiers without first evicting expired credentials, so count, isEmpty, and listIdentifiers() keep reporting stale entries until something explicitly calls cleanupExpiredTokens(). That breaks the documented semantics (“Returns the number of stored credentials”) once expirations kick in. Please make the cleanup part of these accessors so they only surface valid tokens.

     func listIdentifiers() -> [String] {
-      // Return all stored identifiers, including expired ones
-      Array(credentials.keys)
+      cleanupExpiredTokens()
+      return Array(credentials.keys)
     }

   public var count: Int {
     get async {
-      let identifiers = await storage.listIdentifiers()
+      await storage.cleanupExpiredTokens()
+      let identifiers = await storage.listIdentifiers()
       return identifiers.count
     }
   }

   public var isEmpty: Bool {
     get async {
-      let identifiers = await storage.listIdentifiers()
+      await storage.cleanupExpiredTokens()
+      let identifiers = await storage.listIdentifiers()
       return identifiers.isEmpty
     }
   }

📜 Review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between bb7c46c and a080e79.

📒 Files selected for processing (107)

• .devcontainer/swift-6.2/devcontainer.json (1 hunks)
• .github/workflows/MistKit.yml (6 hunks)
• .github/workflows/claude-code-review.yml (1 hunks)
• .github/workflows/claude.yml (1 hunks)
• .gitignore (1 hunks)
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• Sources/MistKit/Authentication/APITokenManager.swift (1 hunks)
• Sources/MistKit/Authentication/AdaptiveTokenManager+Transitions.swift (1 hunks)
• Sources/MistKit/Authentication/AdaptiveTokenManager.swift (1 hunks)
• Sources/MistKit/Authentication/AuthenticationMethod.swift (1 hunks)
• Sources/MistKit/Authentication/AuthenticationMode.swift (1 hunks)
• Sources/MistKit/Authentication/CharacterMapEncoder.swift (3 hunks)
• Sources/MistKit/Authentication/DependencyResolutionError.swift (1 hunks)
• Sources/MistKit/Authentication/InMemoryTokenStorage+Convenience.swift (1 hunks)
• Sources/MistKit/Authentication/InMemoryTokenStorage.swift (1 hunks)
• Sources/MistKit/Authentication/InternalErrorReason.swift (1 hunks)
• Sources/MistKit/Authentication/InvalidCredentialReason.swift (1 hunks)
• Sources/MistKit/Authentication/RequestSignature.swift (1 hunks)
• Sources/MistKit/Authentication/SecureLogging.swift (1 hunks)
• Sources/MistKit/Authentication/ServerToServerAuthManager+RequestSigning.swift (1 hunks)
• Sources/MistKit/Authentication/ServerToServerAuthManager.swift (1 hunks)
• Sources/MistKit/Authentication/TokenCredentials.swift (1 hunks)
• Sources/MistKit/Authentication/TokenManager.swift (1 hunks)
• Sources/MistKit/Authentication/TokenManagerError.swift (1 hunks)
• Sources/MistKit/Authentication/TokenStorage.swift (1 hunks)
• Sources/MistKit/Authentication/WebAuthTokenManager+Methods.swift (1 hunks)
• Sources/MistKit/Authentication/WebAuthTokenManager.swift (1 hunks)
• Sources/MistKit/AuthenticationMiddleware.swift (3 hunks)
• Sources/MistKit/CustomFieldValue.CustomFieldValuePayload.swift (6 hunks)
• Sources/MistKit/CustomFieldValue.swift (6 hunks)
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• Sources/MistKit/Documentation.docc/Documentation.md (1 hunks)
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• Sources/MistKit/EnvironmentConfig.swift (1 hunks)
• Sources/MistKit/FieldValue.swift (6 hunks)
• Sources/MistKit/LoggingMiddleware.swift (3 hunks)
• Sources/MistKit/MistKitClient.swift (2 hunks)
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• Sources/MistKit/MistKitConfiguration.swift (2 hunks)
• Sources/MistKit/Service/CloudKitError+OpenAPI.swift (2 hunks)
• Sources/MistKit/Service/CloudKitError.swift (2 hunks)
• Sources/MistKit/Service/CloudKitResponseProcessor.swift (7 hunks)
• Sources/MistKit/Service/CloudKitService+Initialization.swift (1 hunks)
• Sources/MistKit/Service/CloudKitService+Operations.swift (1 hunks)
• Sources/MistKit/Service/CloudKitService.swift (2 hunks)
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• Sources/MistKit/Service/RecordInfo.swift (1 hunks)
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• Sources/MistKit/Utilities/HTTPField.Name+CloudKit.swift (1 hunks)
• Sources/MistKit/Utilities/NSRegularExpression+CommonPatterns.swift (1 hunks)
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• Tests/MistKitTests/Authentication/APIToken/APITokenManager+TestHelpers.swift (1 hunks)
• Tests/MistKitTests/Authentication/APIToken/APITokenManagerMetadataTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/APIToken/APITokenManagerTests.swift (1 hunks)
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• Tests/MistKitTests/Authentication/Protocol/MockTokenManager.swift (1 hunks)
• Tests/MistKitTests/Authentication/Protocol/TokenCredentials+TestHelpers.swift (1 hunks)
• Tests/MistKitTests/Authentication/Protocol/TokenManagerAuthenticationMethodTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/Protocol/TokenManagerError+TestHelpers.swift (1 hunks)
• Tests/MistKitTests/Authentication/Protocol/TokenManagerErrorTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/Protocol/TokenManagerProtocolTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/Protocol/TokenManagerTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/Protocol/TokenManagerTokenCredentialsTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/ServerToServer/ServerToServerAuthManager+TestHelpers.swift (1 hunks)
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• Tests/MistKitTests/Authentication/ServerToServer/ServerToServerAuthManagerTests+InitializationTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/ServerToServer/ServerToServerAuthManagerTests+PrivateKeyTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/ServerToServer/ServerToServerAuthManagerTests+ValidationTests.swift (1 hunks)
• Tests/MistKitTests/Authentication/ServerToServer/ServerToServerAuthManagerTests.swift (1 hunks)
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• Tests/MistKitTests/AuthenticationMiddleware/WebAuth/AuthenticationMiddlewareWebAuthTests.swift
• Tests/MistKitTests/Core/Configuration/MistKitConfigurationTests.swift
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• Tests/MistKitTests/Core/Environment/EnvironmentTests.swift
• Tests/MistKitTests/Core/FieldValue/FieldValueTests.swift
• Tests/MistKitTests/Core/Platform.swift
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• Tests/MistKitTests/MistKitTests.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithConnectionError.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithIntermittentFailures.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithRateLimiting.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithRecovery.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithRefresh.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithRefreshFailure.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithRefreshTimeout.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithRetry.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithTimeout.swift
• Tests/MistKitTests/Mocks/TokenManagers/MockTokenManagerWithoutCredentials.swift
• Tests/MistKitTests/NetworkError/Recovery/RecoveryTests.swift
• Tests/MistKitTests/NetworkError/Simulation/SimulationTests.swift
• Tests/MistKitTests/NetworkError/Storage/StorageTests.swift
• Tests/MistKitTests/Storage/Concurrent/ConcurrentTokenRefresh/ConcurrentTokenRefreshBasicTests.swift
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• Tests/MistKitTests/Storage/Concurrent/ConcurrentTokenRefresh/ConcurrentTokenRefreshPerformanceTests.swift
• Tests/MistKitTests/Storage/InMemory/InMemoryTokenStorage/InMemoryTokenStorage+TestHelpers.swift
• Tests/MistKitTests/Storage/InMemory/InMemoryTokenStorage/InMemoryTokenStorageInitializationTests.swift
• Tests/MistKitTests/Storage/InMemory/InMemoryTokenStorage/InMemoryTokenStorageReplacementTests.swift
• Tests/MistKitTests/Storage/InMemory/InMemoryTokenStorage/InMemoryTokenStorageRetrievalTests.swift
• Tests/MistKitTests/Storage/InMemory/InMemoryTokenStorage/InMemoryTokenStorageTests+ConcurrentRemovalTests.swift
• Tests/MistKitTests/Storage/InMemory/InMemoryTokenStorage/InMemoryTokenStorageTests+ConcurrentTests.swift
• Tests/MistKitTests/Storage/InMemory/InMemoryTokenStorage/InMemoryTokenStorageTests+ExpirationTests.swift
• Tests/MistKitTests/Storage/InMemory/InMemoryTokenStorage/InMemoryTokenStorageTests+RemovalTests.swift
• openapi.yaml

💤 Files with no reviewable changes (9)

• .taskmaster/tasks/tasks.json
• .taskmaster/state.json
• .taskmaster/reports/task-complexity-report.json
• .taskmaster/docs/cloudkit-asset-fix-plan.md
• .taskmaster/config.json
• .taskmaster/CLAUDE.md
• [email protected]
• .taskmaster/docs/PRD.md
• .taskmaster/templates/example_prd.txt

🧰 Additional context used

🪛 Gitleaks (8.28.0)

Tests/MistKitTests/Authentication/APIToken/APITokenManagerMetadataTests.swift

[high] 18-18: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 37-37: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 56-56: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

Examples/ENVIRONMENT_VARIABLES.md

[high] 40-42: Identified a Private Key, which may compromise cryptographic security and sensitive data encryption.

(private-key)

Tests/MistKitTests/Authentication/APIToken/APITokenManagerTests.swift

[high] 14-14: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 38-38: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 48-48: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 58-58: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 114-114: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 137-137: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 160-160: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

---

[high] 203-203: Detected a Generic API Key, potentially exposing access to various services and sensitive operations.

(generic-api-key)

🪛 markdownlint-cli2 (0.18.1)

CLAUDE.md

153-153: Bare URL used

(MD034, no-bare-urls)

Examples/ENVIRONMENT_VARIABLES.md

39-39: Fenced code blocks should have a language specified

(MD040, fenced-code-language)

---

113-113: Fenced code blocks should have a language specified

(MD040, fenced-code-language)

---

121-121: Fenced code blocks should have a language specified

(MD040, fenced-code-language)

---

128-128: Fenced code blocks should have a language specified

(MD040, fenced-code-language)

🪛 actionlint (1.7.7)

.github/workflows/MistKit.yml

20-20: duplicate value {"nightly": "true", "version": "6.1"} is found in matrix "swift". the same value is at line:18,col:13

(matrix)

---

22-22: duplicate value {"nightly": "true", "version": "6.2"} is found in matrix "swift". the same value is at line:19,col:13

(matrix)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (5)

• GitHub Check: Build on macOS (visionos, macos-15, /Applications/Xcode_26.0.app, Apple Vision Pro, 26.0)
• GitHub Check: Build on Windows (windows-2025, swift-6.1-release, 6.1-RELEASE)
• GitHub Check: Build on Windows (windows-2025, swift-6.2-release, 6.2-RELEASE)
• GitHub Check: Build on Windows (windows-2022, swift-6.2-release, 6.2-RELEASE)
• GitHub Check: Build on Windows (windows-2022, swift-6.1-release, 6.1-RELEASE)

🔇 Additional comments (11)

.spi.yml (1)

4-5: MistKit documentation target verified
MistKit is defined in Package.swift at lines 81, 93, and 108.

Sources/MistKit/Authentication/InvalidCredentialReason.swift (1)

49-81: Clear credential diagnostics

Full coverage of the invalid credential scenarios with precise, user-facing descriptions will make downstream error handling and logging much easier to reason about. Nicely done.

Examples/Package.swift (1)

14-32: No remaining OpenAPIRuntime references in Examples Verified a recursive search of the Examples directory yields no import or symbol usages.

Sources/MistKit/Authentication/TokenManager.swift (1)

40-46: Confirm typed throws availability

Using throws(TokenManagerError) requires Swift 6 (or newer toolchains such as Xcode 16). Please confirm the project’s minimum Swift toolchain supports typed throws so we don’t break existing builds.

Tests/MistKitTests/Authentication/WebAuth/ValidationTests.swift (1)

24-43: Great end-to-end validation coverage.
Exercising hasCredentials, validateCredentials(), and getCurrentCredentials() in one pass gives strong confidence that the real-world happy path stays intact.

Tests/MistKitTests/Authentication/WebAuth/WebAuthTokenManagerTests+EdgeCases.swift (1)

12-79: Solid negative-path assertions.
Catching whitespace, special characters, and overlength inputs meaningfully broadens the guardrails around validateCredentials().

Sources/MistKit/Service/CloudKitError.swift (1)

34-59: Public, Sendable CloudKitError looks good.
Exposing the enum alongside a tailored errorDescription tightens the API surface and enables downstream concurrency without surprises.

Sources/MistKit/Authentication/TokenManagerError.swift (1)

49-62: Solid localized messaging coverage.
Enumerating the localized strings per case keeps downstream error surfaces readable without bleeding internal context.

Tests/MistKitTests/AuthenticationMiddleware/APIToken/AuthenticationMiddlewareAPITokenTests.swift (1)

59-99: Good guard around query preservation.
Verifying that existing query params coexist with the injected CloudKit token closes a nasty regression vector in the middleware intercept path.

Sources/MistKit/AuthenticationMiddleware.swift (2)

133-138: Exclude the query string from the CloudKit signing subpath

HTTPRequest.path includes the query portion (e.g. /records/query?ckAPIToken=…). CloudKit’s spec says the “Web service URL subpath” excludes the query string; including it yields an invalid signature. Strip the query before signing.

-    let webServiceSubpath = request.path ?? ""
+    let webServiceSubpath = parseRequestPath(request.path ?? "").path

---

111-113: Avoid double-encoding ckWebAuthToken

CharacterMapEncoder.encode percent-encodes the token up front, and URLComponents encodes it again when serializing query items. Tokens containing +, /, or = end up as %252B, etc., which CloudKit rejects. Feed the raw token to URLQueryItem and drop the encoder/import.

-import Crypto
@@
-  private let tokenEncoder = CharacterMapEncoder()
@@
-    let encodedWebAuthToken = tokenEncoder.encode(webToken)
-    queryItems.append(URLQueryItem(name: "ckWebAuthToken", value: encodedWebAuthToken))
+    queryItems.append(URLQueryItem(name: "ckWebAuthToken", value: webToken))

[coderabbitai]

⚠️ Potential issue | 🟠 Major

Point Codecov at the correct Swift project.

Passing swift_project: SyntaxKit is a leftover from another repo; Codecov can’t find that project in MistKit and exits non‑zero under fail_ci_if_error: true, breaking the job. Set the option to MistKit (or remove it) so the upload succeeds.

Apply this diff:

-          swift_project: SyntaxKit
+          swift_project: MistKit

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

	with:
	fail_ci_if_error: true
	flags: swift-${{ matrix.swift.version }},windows
	verbose: true
	token: ${{ secrets.CODECOV_TOKEN }}
	os: windows
	swift_project: SyntaxKit
	# files: ${{ join(fromJSON(steps.coverage-files.outputs.files), ',') }}
	with:
	fail_ci_if_error: true
	flags: swift-${{ matrix.swift.version }},windows
	verbose: true
	token: ${{ secrets.CODECOV_TOKEN }}
	os: windows
	swift_project: MistKit
	# files: ${{ join(fromJSON(steps.coverage-files.outputs.files), ',') }}

🤖 Prompt for AI Agents

In .github/workflows/MistKit.yml around lines 60 to 67 the Codecov uploader is
pointed at the wrong Swift project (swift_project: SyntaxKit) which causes
Codecov to fail and the job to exit non‑zero; update the swift_project value to
MistKit (or remove the swift_project key entirely) so Codecov targets the
correct repository and the upload no longer fails under fail_ci_if_error: true.

[coderabbitai]

✅ Actions performed

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[coderabbitai]

✅ Actions performed

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[coderabbitai]

✅ Actions performed

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[coderabbitai]

✅ Actions performed

Reviews paused.