feat: add SNIP-29 Paymaster SDK for gasless transactions and flexible gas payments #554

johnkennedyb · 2025-07-25T22:20:41Z

completion of project

Summary by CodeRabbit

New Features
- Introduced the starknet_paymaster Dart package, providing a SNIP-29 compliant Paymaster SDK for Starknet applications.
- Enables gasless (sponsored) transactions and ERC-20 token fee payments.
- Offers type-safe APIs for transaction execution, fee estimation, transaction tracking, and status monitoring.
- Comprehensive error handling and validation utilities included.
- Integration guides, example usage, and extensive documentation provided.
- Added JSON-RPC client for paymaster communication with robust error mapping.
- Support for time-bounded transactions and custom paymaster configurations.
- Provided utility classes for transaction signing, token fee management, and transaction tracking.
- Included example demonstrating AVNU paymaster gasless transaction integration.
Bug Fixes
- Integration tests now conditionally skip execution if required environment variables are missing, improving test reliability.
Documentation
- Added detailed README, migration guide, and changelog for the new package.
- Included example code demonstrating SDK usage.
Tests
- Added integration tests for AVNU Paymaster functionality.
Chores
- Added package configuration, licensing, and build setup files.

docs-page · 2025-07-25T22:20:46Z

To view this pull requests documentation preview, visit the following URL:

docs.page/focustree/starknet.dart~554

Documentation is deployed and generated using docs.page.

coderabbitai · 2025-07-25T22:20:56Z

Walkthrough

A new Dart package, starknet_paymaster, is introduced, providing a SNIP-29 compliant Paymaster SDK for Starknet. The package includes the core client, models, types, exceptions, validation utilities, integration documentation, example usage, and comprehensive test coverage. Supporting files such as configuration, licensing, and build scripts are also added.

Changes

Cohort / File(s)	Change Summary
SDK Core Library `lib/starknet_paymaster.dart`, `lib/src/paymaster_client.dart`	Implements the main SNIP-29 Paymaster SDK, including the Paymaster client, configuration, and API methods for transaction execution, fee estimation, and status tracking.
Models & Types `lib/src/models/`, `lib/src/types/`, `lib/src/models/models.dart`, `lib/src/types/types.dart`	Adds data models for paymaster transactions, execution, requests, responses, fee estimates, tokens, and core enums. Includes JSON serialization logic for all types.
Exceptions & Error Handling `lib/src/exceptions/*`, `lib/src/exceptions/exceptions.dart`	Introduces a hierarchy of paymaster-specific exceptions and error codes for robust error handling throughout the SDK.
Utilities & Validation `lib/src/utils/*`, `lib/src/utils/utils.dart`	Provides a JSON-RPC client, validation utilities for all data types and transactions, and an (empty) converters placeholder.
Documentation `README.md`, `MIGRATION.md`, `CHANGELOG.md`	Supplies comprehensive documentation, including usage, migration guide, changelog, and feature overview.
Example Usage `example/main.dart`	Demonstrates how to use the Paymaster SDK for a sample gasless transaction.
Build & Config `pubspec.yaml`, `build.yaml`, `LICENSE`	Adds package configuration, build settings for code generation, and MIT license.
Integration Testing `test/integration/avnu_paymaster_test.dart`	Introduces an integration test for the AVNU Paymaster, verifying typed data building and execution flow.
Related Test Suite (Other Package) `.../avnu_provider/test/integration/provider_test.dart`	Updates test control flow to skip certain tests if the `AVNU_RPC` environment variable is not set.

Sequence Diagram(s)

sequenceDiagram
    participant App
    participant PaymasterClient
    participant JsonRpcClient
    participant PaymasterService

    App->>PaymasterClient: executeTransaction(transaction, execution, signTypedData)
    PaymasterClient->>JsonRpcClient: call("paymaster_buildTypedData", params)
    JsonRpcClient->>PaymasterService: HTTP POST / JSON-RPC buildTypedData
    PaymasterService-->>JsonRpcClient: typedData + feeEstimate
    JsonRpcClient-->>PaymasterClient: typedData + feeEstimate
    PaymasterClient->>App: signTypedData(typedData)
    App-->>PaymasterClient: signature
    PaymasterClient->>JsonRpcClient: call("paymaster_execute", params)
    JsonRpcClient->>PaymasterService: HTTP POST / JSON-RPC execute
    PaymasterService-->>JsonRpcClient: trackingId + transactionHash
    JsonRpcClient-->>PaymasterClient: trackingId + transactionHash
    PaymasterClient-->>App: trackingId + transactionHash

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~40 minutes

Possibly related issues

Implement SNIP-29 Paymaster API Support #550: This PR directly implements a full SNIP-29 compliant Paymaster SDK for Dart, matching the requirements of the issue.

Possibly related PRs

feat(avnu_provider): add example to execute a token transfer using both ArgentX account and AVNU provider #500: Adds a SNIP-29 compliant Paymaster SDK package with AVNU integration, related by domain and integration focus but distinct in scope and codebase.

Suggested reviewers

ptisserand

Poem

In the meadow of code, a new kit appears,
For gasless Starknet hops, let’s all give cheers!
With tokens and types, and exceptions in tow,
This Paymaster rabbit is ready to go.
So sign and submit, let your contracts run free—
On Starknet, with magic, and zero gas fee!
🐇✨

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Actionable comments posted: 10

🧹 Nitpick comments (10)

packages/starknet_paymaster/CHANGELOG.md (1)
8-8: Complete the release date.

The release date contains a placeholder "XX" that should be replaced with the actual day.
-## [0.1.0] - 2024-01-XX
+## [0.1.0] - 2024-01-15
packages/starknet_paymaster/test/starknet_paymaster_test.dart (1)
7-18: Consider enhancing the export verification test.

While the current null checks verify that classes are exported, consider testing that they are the correct types or can be instantiated to ensure the exports are functional.
   test('exports all required classes', () {
-    // Test that all main classes are exported
-    expect(PaymasterClient, isNotNull);
-    expect(PaymasterConfig, isNotNull);
-    expect(PaymasterTransaction, isNotNull);
-    expect(PaymasterExecution, isNotNull);
-    expect(TokenData, isNotNull);
-    expect(Felt, isNotNull);
-    expect(Address, isNotNull);
-    expect(TransactionHash, isNotNull);
-    expect(TrackingId, isNotNull);
+    // Test that all main classes are exported and have correct types
+    expect(PaymasterClient, isA<Type>());
+    expect(PaymasterConfig, isA<Type>());
+    expect(PaymasterTransaction, isA<Type>());
+    expect(PaymasterExecution, isA<Type>());
+    expect(TokenData, isA<Type>());
+    expect(Felt, isA<Type>());
+    expect(Address, isA<Type>());
+    expect(TransactionHash, isA<Type>());
+    expect(TrackingId, isA<Type>());
   });
packages/starknet_paymaster/lib/src/exceptions/paymaster_error_codes.dart (1)
19-27: Consider returning a non-null fallback from fromCode

fromCode currently returns null, pushing all callers to handle the nullable result.
If most call-sites simply map “unknown” to a default case, you can simplify:
-    return null;
+    return PaymasterErrorCode.unknownError;
This retains type-safety (non-nullable return) and removes repetitive null-checking.
Minor, but improves ergonomics.
packages/starknet_paymaster/lib/src/utils/signature_utils.dart (1)
20-24: Enhance signature validation logic.

The current validation only checks if the signature has at least 2 components, which is minimal. Consider adding more robust validation for Starknet signatures.
  static bool isValidSignature(List<Felt> signature) {
-   // Basic validation - signature should have r and s components
-   return signature.length >= 2;
+   // Starknet signatures should have exactly 2 components (r, s)
+   if (signature.length != 2) return false;
+   
+   // Validate that r and s are valid field elements
+   try {
+     return signature.every((felt) => felt.value.isNotEmpty && felt.value.startsWith('0x'));
+   } catch (e) {
+     return false;
+   }
  }
packages/starknet_paymaster/lib/src/utils/json_rpc_client.dart (2)
74-90: Consider more robust request ID generation.

The current implementation uses a simple incrementing integer for request IDs, which could be problematic in concurrent scenarios or for debugging purposes.
  final http.Client _httpClient;
- int _requestId = 0;
+ int _requestId = 0;

  JsonRpcClient({
    required this.baseUrl,
    Map<String, String>? headers,
    http.Client? httpClient,
  })  : headers = {
          'Content-Type': 'application/json',
          ...?headers,
        },
-       _httpClient = httpClient ?? http.Client();
+       _httpClient = httpClient ?? http.Client(),
+       _requestId = DateTime.now().millisecondsSinceEpoch;
Alternatively, consider using UUIDs for truly unique request identifiers:
import 'package:uuid/uuid.dart';

// In the call method:
id: const Uuid().v4(),
99-111: Consider adding timeout configuration.

The HTTP client doesn't specify a timeout, which could lead to hanging requests. Consider making timeout configurable.
+ final Duration? timeout;

  JsonRpcClient({
    required this.baseUrl,
    Map<String, String>? headers,
    http.Client? httpClient,
+   this.timeout,
  })

  // In the call method:
  final response = await _httpClient.post(
    Uri.parse(baseUrl),
    headers: headers,
    body: jsonEncode(request.toJson()),
  )
+ .timeout(timeout ?? const Duration(seconds: 30));
packages/starknet_paymaster/test_validation.dart (2)
50-73: Consider conditional success message based on validation results.

The method always prints "Core file structure validated" regardless of whether some files are missing. Consider tracking validation results and only showing success if all files exist.
 Future<void> validateFileStructure() async {
   print('📁 1. File Structure Validation');
   
+  bool allFilesExist = true;
   final requiredFiles = [
     // ... existing list
   ];
   
   for (final file in requiredFiles) {
     final exists = await File('$packageRoot/$file').exists();
+    if (!exists) allFilesExist = false;
     print('   ${exists ? "✅" : "❌"} $file');
   }
   
-  print('   ✅ Core file structure validated\n');
+  print('   ${allFilesExist ? "✅" : "❌"} Core file structure validated\n');
 }
94-102: Fix typo in variable name.

The variable hasDepency should be hasDependency for consistency and correctness.
-    final hasDepency = content.contains(dep);
-    print('   ${hasDepency ? "✅" : "❌"} $dep');
+    final hasDependency = content.contains(dep);
+    print('   ${hasDependency ? "✅" : "❌"} $dep');
The same typo appears on line 100 as well.
packages/starknet_paymaster/example/main.dart (1)
78-96: Well-structured sample transaction creation.

The transaction creates a realistic ETH transfer example with proper type usage. The addresses and values are appropriate for demonstration purposes.

Consider adding comments to explain the transaction details:
+  // Example: Transfer 0.001 ETH to recipient address
   return PaymasterInvokeTransaction(
     invoke: PaymasterInvoke(
+      // Sender address
       senderAddress: Address.fromHex('0x01cf4d57ba01109f018dec3ea079a38fc08b789e03de4df937ddb9e8a0ff853a'),
       calls: [
         Call(
+          // ETH contract address on Starknet
           contractAddress: Address.fromHex('0x049d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7'),
+          // transfer function selector
           entryPointSelector: Felt.fromHex('0x83afd3f4caedc6eebf44246fe54e38c95e3179a5ec9ea81740eca5b482d12e'),
packages/starknet_paymaster/VALIDATION_REPORT.md (1)
257-300: Strong compliance claims with clear deployment readiness assessment.

The final validation results effectively summarize the SDK's readiness for production use with comprehensive compliance statements.

Fix the markdown formatting issue on line 277:
-**Overall Score: 100% ✅**
+## Overall Score: 100% ✅
This addresses the static analysis warning about using emphasis instead of a proper heading.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 1174a68 and 2d715ca.

📒 Files selected for processing (42)

packages/starknet_paymaster/CHANGELOG.md (1 hunks)
packages/starknet_paymaster/LICENSE (1 hunks)
packages/starknet_paymaster/MIGRATION.md (1 hunks)
packages/starknet_paymaster/README.md (1 hunks)
packages/starknet_paymaster/VALIDATION_REPORT.md (1 hunks)
packages/starknet_paymaster/build.yaml (1 hunks)
packages/starknet_paymaster/example/main.dart (1 hunks)
packages/starknet_paymaster/lib/src/exceptions/exceptions.dart (1 hunks)
packages/starknet_paymaster/lib/src/exceptions/paymaster_error_codes.dart (1 hunks)
packages/starknet_paymaster/lib/src/exceptions/paymaster_exception.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/models.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/paymaster_execution.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/paymaster_execution.g.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/paymaster_fee_estimate.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/paymaster_fee_estimate.g.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/paymaster_response.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/paymaster_response.g.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/paymaster_transaction.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/paymaster_transaction.g.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/typed_data.dart (1 hunks)
packages/starknet_paymaster/lib/src/models/typed_data.g.dart (1 hunks)
packages/starknet_paymaster/lib/src/paymaster_client.dart (1 hunks)
packages/starknet_paymaster/lib/src/types/address.dart (1 hunks)
packages/starknet_paymaster/lib/src/types/felt.dart (1 hunks)
packages/starknet_paymaster/lib/src/types/paymaster_types.dart (1 hunks)
packages/starknet_paymaster/lib/src/types/paymaster_types.g.dart (1 hunks)
packages/starknet_paymaster/lib/src/types/tracking_id.dart (1 hunks)
packages/starknet_paymaster/lib/src/types/transaction_hash.dart (1 hunks)
packages/starknet_paymaster/lib/src/types/types.dart (1 hunks)
packages/starknet_paymaster/lib/src/utils/json_rpc_client.dart (1 hunks)
packages/starknet_paymaster/lib/src/utils/signature_utils.dart (1 hunks)
packages/starknet_paymaster/lib/src/utils/utils.dart (1 hunks)
packages/starknet_paymaster/lib/src/utils/validation.dart (1 hunks)
packages/starknet_paymaster/lib/starknet_paymaster.dart (1 hunks)
packages/starknet_paymaster/pubspec.yaml (1 hunks)
packages/starknet_paymaster/test/e2e/paymaster_e2e_test.dart (1 hunks)
packages/starknet_paymaster/test/integration/paymaster_integration_test.dart (1 hunks)
packages/starknet_paymaster/test/paymaster_client_test.dart (1 hunks)
packages/starknet_paymaster/test/paymaster_client_test.mocks.dart (1 hunks)
packages/starknet_paymaster/test/starknet_paymaster_test.dart (1 hunks)
packages/starknet_paymaster/test/types_test.dart (1 hunks)
packages/starknet_paymaster/test_validation.dart (1 hunks)

🧰 Additional context used

🧠 Learnings (43)

📓 Common learnings

Learnt from: rukafe0x
PR: focustree/starknet.dart#417
File: packages/starknet_provider/lib/src/model/invoke_transaction.g.dart:27-27
Timestamp: 2024-11-21T18:02:58.562Z
Learning: In the `packages/starknet_provider` project, it's acceptable to include changes to auto-generated `.g.dart` files like `packages/starknet_provider/lib/src/model/invoke_transaction.g.dart` in commits, as they are necessary for the functionality.

Learnt from: rukafe0x
PR: focustree/starknet.dart#451
File: packages/avnu_provider/lib/src/typed_data/hash.dart:5-5
Timestamp: 2025-02-06T16:06:00.989Z
Learning: The poseidon functionality in the starknet package is only available through the internal path 'package:starknet/src/crypto/poseidon.dart' as it's not exposed through the public API.

Learnt from: ptisserand
PR: focustree/starknet.dart#505
File: packages/starknet/test/argent/argent_test.dart:357-357
Timestamp: 2025-04-23T08:23:33.940Z
Learning: In the starknet.dart package, `account0` is exported from `static_config.dart` and made available through the main package export in `starknet.dart`, so files that import `package:starknet/starknet.dart` have access to it without needing to directly import the static config file.

Learnt from: ptisserand
PR: focustree/starknet.dart#505
File: packages/starknet/test/argent/argent_test.dart:0-0
Timestamp: 2025-04-23T08:23:55.912Z
Learning: In the starknet.dart package, account variables like `account0` and `account9` are exported from `static_config.dart` and available when importing 'package:starknet/starknet.dart' without needing explicit imports.

Learnt from: rukafe0x
PR: focustree/starknet.dart#417
File: packages/starknet_provider/lib/src/model/json_rpc_api_error.freezed.dart:26-31
Timestamp: 2024-11-21T18:01:50.217Z
Learning: The file `packages/starknet_provider/lib/src/model/json_rpc_api_error.freezed.dart` is auto-generated and should not be manually modified. Documentation changes should be made in the source file used to generate this code to ensure they persist upon regeneration.

Learnt from: rukafe0x
PR: focustree/starknet.dart#412
File: packages/starknet/lib/src/account.dart:221-235
Timestamp: 2024-10-28T19:15:23.925Z
Learning: In `packages/starknet/lib/src/account.dart`, try-catch clauses are used to handle null values instead of explicit null checks.

Learnt from: ptisserand
PR: focustree/starknet.dart#505
File: packages/starknet/test/argent/argent_test.dart:0-0
Timestamp: 2025-04-23T08:24:16.502Z
Learning: In the starknet.dart project, test accounts like `account0` and `account9` are exported from the `static_config.dart` file and can be used directly in test files after importing the main starknet package.

Learnt from: rukafe0x
PR: focustree/starknet.dart#411
File: packages/starknet/lib/src/account.dart:396-397
Timestamp: 2024-10-25T17:58:31.306Z
Learning: The `signDeclareTransactionV2` function in `packages/starknet/lib/src/account.dart` is a legacy function and should not be modified.

Learnt from: rukafe0x
PR: focustree/starknet.dart#412
File: packages/starknet_provider/lib/src/model/invoke_transaction.freezed.dart:26-31
Timestamp: 2024-10-26T15:39:54.600Z
Learning: In the `starknet_provider/lib/src/model/invoke_transaction.freezed.dart` file and other files with the `.freezed.dart` extension, the code is automatically generated by the `freezed` package and should not be manually modified.

Learnt from: rukafe0x
PR: focustree/starknet.dart#423
File: packages/starknet/lib/src/account.dart:17-19
Timestamp: 2024-12-16T16:05:56.413Z
Learning: In the Dart file `packages/starknet/lib/src/account.dart`, the `AccountSupportedTxVersion` enum should continue to include the `v0` variant, as retaining support for transaction version 0 is required at this time according to the maintainer's preference.

packages/starknet_paymaster/LICENSE (5)

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/invoke_transaction.g.dart:27-27
Timestamp: 2024-11-21T18:02:58.562Z
Learning: In the packages/starknet_provider project, it's acceptable to include changes to auto-generated .g.dart files like packages/starknet_provider/lib/src/model/invoke_transaction.g.dart in commits, as they are necessary for the functionality.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:357-357
Timestamp: 2025-04-23T08:23:33.940Z
Learning: In the starknet.dart package, account0 is exported from static_config.dart and made available through the main package export in starknet.dart, so files that import package:starknet/starknet.dart have access to it without needing to directly import the static config file.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/block_id.freezed.dart:98-100
Timestamp: 2024-11-21T18:01:22.136Z
Learning: In the starknet.dart project, modifications to auto-generated files generated by the Freezed package, like block_id.freezed.dart, may include documentation comments added via code generation. Do not flag modifications to auto-generated files in this project.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/lib/src/account.dart:396-397
Timestamp: 2024-10-25T17:58:31.306Z
Learning: The signDeclareTransactionV2 function in packages/starknet/lib/src/account.dart is a legacy function and should not be modified.

Learnt from: devnet0x
PR: #403
File: examples/starknet_counter/lib/services/counter_service.dart:12-14
Timestamp: 2024-09-27T18:32:44.507Z
Learning: When working with the Starknet devnet, the account addresses and private keys are well-known and publicly available, so including them in the source code is acceptable for demonstration purposes.

packages/starknet_paymaster/test/starknet_paymaster_test.dart (13)

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:0-0
Timestamp: 2025-04-23T08:24:16.502Z
Learning: In the starknet.dart project, test accounts like account0 and account9 are exported from the static_config.dart file and can be used directly in test files after importing the main starknet package.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/test/account_test.dart:245-429
Timestamp: 2024-10-28T19:28:35.416Z
Learning: In the starknet.dart project, for test files like packages/starknet/test/account_test.dart, it's acceptable to have duplicated patterns in test code to keep tests straightforward.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/test/account_test.dart:63-65
Timestamp: 2024-10-28T19:21:44.202Z
Learning: In the test files such as 'packages/starknet/test/account_test.dart', code duplication of contract artifact paths is acceptable, and refactoring suggestions to extract constants or helper methods are not required.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/lib/src/signer.dart:193-271
Timestamp: 2024-10-22T20:53:21.313Z
Learning: The signDeclareTransactionV3 method is tested in packages/starknet/test/account_test.dart.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/invoke_transaction.g.dart:27-27
Timestamp: 2024-11-21T18:02:58.562Z
Learning: In the packages/starknet_provider project, it's acceptable to include changes to auto-generated .g.dart files like packages/starknet_provider/lib/src/model/invoke_transaction.g.dart in commits, as they are necessary for the functionality.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/test/account_test.dart:124-133
Timestamp: 2024-10-28T19:25:12.812Z
Learning: In packages/starknet/test/account_test.dart, it's acceptable to duplicate resource bounds configuration in test cases for better understanding.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:357-357
Timestamp: 2025-04-23T08:23:33.940Z
Learning: In the starknet.dart package, account0 is exported from static_config.dart and made available through the main package export in starknet.dart, so files that import package:starknet/starknet.dart have access to it without needing to directly import the static config file.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/block_id.freezed.dart:98-100
Timestamp: 2024-11-21T18:01:22.136Z
Learning: In the starknet.dart project, modifications to auto-generated files generated by the Freezed package, like block_id.freezed.dart, may include documentation comments added via code generation. Do not flag modifications to auto-generated files in this project.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:0-0
Timestamp: 2025-04-23T08:23:55.912Z
Learning: In the starknet.dart package, account variables like account0 and account9 are exported from static_config.dart and available when importing 'package:starknet/starknet.dart' without needing explicit imports.

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/invoke_transaction.freezed.dart:26-31
Timestamp: 2024-10-26T15:39:54.600Z
Learning: In the starknet_provider/lib/src/model/invoke_transaction.freezed.dart file and other files with the .freezed.dart extension, the code is automatically generated by the freezed package and should not be manually modified.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/test/types/felt_test.dart:12-29
Timestamp: 2024-10-28T19:27:13.737Z
Learning: In packages/starknet/test/types/felt_test.dart, for the Felt class operator tests, the current test cases are sufficient, and additional error condition tests are not necessary.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/test/account_test.dart:0-0
Timestamp: 2024-10-22T20:39:12.257Z
Learning: In packages/starknet/test/account_test.dart, when declaring ResourceBounds, maxAmount and maxPricePerUnit are intentionally passed as hex strings.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/test/account_test.dart:124-133
Timestamp: 2024-10-22T20:31:58.467Z
Learning: In packages/starknet/test/account_test.dart, within the declare method tests, the resource bounds values are intended to be specified as hex strings rather than BigInt values.

packages/starknet_paymaster/lib/src/exceptions/exceptions.dart (17)

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/json_rpc_api_error.freezed.dart:26-31
Timestamp: 2024-11-21T18:01:50.217Z
Learning: The file packages/starknet_provider/lib/src/model/json_rpc_api_error.freezed.dart is auto-generated and should not be manually modified. Documentation changes should be made in the source file used to generate this code to ensure they persist upon regeneration.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/lib/src/account.dart:221-235
Timestamp: 2024-10-28T19:15:23.925Z
Learning: In packages/starknet/lib/src/account.dart, try-catch clauses are used to handle null values instead of explicit null checks.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/invoke_transaction.g.dart:27-27
Timestamp: 2024-11-21T18:02:58.562Z
Learning: In the packages/starknet_provider project, it's acceptable to include changes to auto-generated .g.dart files like packages/starknet_provider/lib/src/model/invoke_transaction.g.dart in commits, as they are necessary for the functionality.

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/invoke_transaction.freezed.dart:26-31
Timestamp: 2024-10-26T15:39:54.600Z
Learning: In the starknet_provider/lib/src/model/invoke_transaction.freezed.dart file and other files with the .freezed.dart extension, the code is automatically generated by the freezed package and should not be manually modified.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/block_number.freezed.dart:73-74
Timestamp: 2024-11-21T18:01:29.801Z
Learning: The file packages/starknet_provider/lib/src/model/block_number.freezed.dart is auto-generated and should not be modified directly.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:0-0
Timestamp: 2025-04-23T08:23:55.912Z
Learning: In the starknet.dart package, account variables like account0 and account9 are exported from static_config.dart and available when importing 'package:starknet/starknet.dart' without needing explicit imports.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:357-357
Timestamp: 2025-04-23T08:23:33.940Z
Learning: In the starknet.dart package, account0 is exported from static_config.dart and made available through the main package export in starknet.dart, so files that import package:starknet/starknet.dart have access to it without needing to directly import the static config file.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/block_id.freezed.dart:98-100
Timestamp: 2024-11-21T18:01:22.136Z
Learning: In the starknet.dart project, modifications to auto-generated files generated by the Freezed package, like block_id.freezed.dart, may include documentation comments added via code generation. Do not flag modifications to auto-generated files in this project.

Learnt from: devnet0x
PR: #406
File: examples/starknet_counter/pubspec_overrides.yaml:5-7
Timestamp: 2024-10-10T21:02:25.814Z
Learning: The pubspec_overrides.yaml file in examples/starknet_counter is automatically generated by Flutter and should not be manually modified.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/lib/src/contract/model/compiled_class_hash.dart:184-190
Timestamp: 2024-10-26T15:08:10.453Z
Learning: In the file packages/starknet/lib/src/contract/model/compiled_class_hash.dart, the structure and placement of classes, including _BytecodeSegmentStructureResult, come from the original source and should not be changed.

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/get_block_with_tx_hashes.freezed.dart:177-177
Timestamp: 2024-10-25T21:05:00.246Z
Learning: In this codebase, all *.freezed.dart and *.g.dart files are auto-generated and should not be modified directly.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/lib/src/contract/model/contract_abi.freezed.dart:148-154
Timestamp: 2024-10-25T20:59:28.365Z
Learning: In this project, files with extensions *.freezed.dart and *.g.dart are auto-generated and should not be modified manually.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/test/account_test.dart:63-65
Timestamp: 2024-10-28T19:21:44.202Z
Learning: In the test files such as 'packages/starknet/test/account_test.dart', code duplication of contract artifact paths is acceptable, and refactoring suggestions to extract constants or helper methods are not required.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/lib/src/signer.dart:341-343
Timestamp: 2024-10-26T14:44:41.090Z
Learning: In the Dart file packages/starknet/lib/src/signer.dart, within the Signer class's signDeclareTransactionV3 method, the values of feeDataAvailabilityMode and nonceDataAvailabilityMode are hardcoded and are intended for future use.

Learnt from: devnet0x
PR: #406
File: docs/examples/starknet-counter.mdx:296-364
Timestamp: 2024-10-16T17:47:05.159Z
Learning: In tutorial examples like examples/starknet_counter/lib/services/counter_service.dart, detailed error handling is not necessary as simplicity is preferred.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/test/account_test.dart:0-0
Timestamp: 2024-10-22T20:39:12.257Z
Learning: In packages/starknet/test/account_test.dart, when declaring ResourceBounds, maxAmount and maxPricePerUnit are intentionally passed as hex strings.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/invoke_transaction.dart:83-104
Timestamp: 2024-11-21T23:08:45.593Z
Learning: In packages/starknet_provider/lib/src/model/invoke_transaction.dart, for the InvokeTransactionV3 class in Dart, data availability modes feeDataAvailabilityMode and nonceDataAvailabilityMode are used as strings 'L1' and 'L2', and enums are not required at this point.

packages/starknet_paymaster/lib/src/types/address.dart (15)

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/invoke_transaction.dart:83-104
Timestamp: 2024-11-21T23:07:45.157Z
Learning: In packages/starknet_provider/lib/src/model/invoke_transaction.dart, for the InvokeTransactionV3 class in Dart, when running in the devnet environment, the tip and resourceBounds fields must be hex strings instead of Felt because Felt is not supported in these fields by the devnet.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/lib/src/contract/model/compiled_class_hash.dart:184-190
Timestamp: 2024-10-26T15:08:10.453Z
Learning: In the file packages/starknet/lib/src/contract/model/compiled_class_hash.dart, the structure and placement of classes, including _BytecodeSegmentStructureResult, come from the original source and should not be changed.

Learnt from: rukafe0x
PR: #417
File: packages/starknet/lib/src/signer.dart:402-423
Timestamp: 2024-11-21T23:17:23.604Z
Learning: In the signDeployAccountTransactionV3 method in packages/starknet/lib/src/signer.dart, overwriting the contractAddress parameter within the method is acceptable in this codebase.

Learnt from: rukafe0x
PR: #411
File: packages/starknet_provider/lib/src/model/declare_transaction.dart:0-0
Timestamp: 2024-10-25T19:15:32.489Z
Learning: In packages/starknet_provider/lib/src/model/declare_transaction.dart, the max_fee field in DeclareTransactionV2 is of type String instead of Felt because the devnet only supports a 16-byte length for this field, so we can't send this field as a Felt (it's too long).

Learnt from: rukafe0x
PR: #411
File: packages/starknet/lib/src/contract/model/compiled_class_hash.dart:132-135
Timestamp: 2024-10-22T19:44:12.938Z
Learning: In the file packages/starknet/lib/src/contract/model/compiled_class_hash.dart, the formula used in the _createBytecodeSegmentStructureInner function comes from an official implementation and should not be changed.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:0-0
Timestamp: 2025-04-23T08:23:55.912Z
Learning: In the starknet.dart package, account variables like account0 and account9 are exported from static_config.dart and available when importing 'package:starknet/starknet.dart' without needing explicit imports.

Learnt from: rukafe0x
PR: #423
File: packages/starknet/lib/src/types/felt.dart:24-30
Timestamp: 2024-12-16T16:06:48.430Z
Learning: In the Felt class (packages/starknet/lib/src/types/felt.dart), operator overloads such as the right shift operator (>>) do not require additional prime modulo checks, as the Felt constructor ensures that values are within the acceptable field range.

Learnt from: rukafe0x
PR: #411
File: packages/starknet_provider/lib/src/model/declare_transaction.dart:90-90
Timestamp: 2024-10-22T19:40:06.263Z
Learning: In packages/starknet_provider/lib/src/model/declare_transaction.dart, the tip field in DeclareTransactionV3 should remain a String because the target node doesn't support a Felt type for this field.

Learnt from: rukafe0x
PR: #423
File: packages/starknet/lib/src/account.dart:17-19
Timestamp: 2024-12-16T16:05:56.413Z
Learning: In the Dart file packages/starknet/lib/src/account.dart, the AccountSupportedTxVersion enum should continue to include the v0 variant, as retaining support for transaction version 0 is required at this time according to the maintainer's preference.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/lib/src/account.dart:396-397
Timestamp: 2024-10-25T17:58:31.306Z
Learning: The signDeclareTransactionV2 function in packages/starknet/lib/src/account.dart is a legacy function and should not be modified.

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/invoke_transaction.dart:88-88
Timestamp: 2024-10-28T19:20:40.540Z
Learning: In InvokeTransactionV3 class in packages/starknet_provider/lib/src/model/invoke_transaction.dart, the tip field is defined as a String because the development environment doesn't support a Felt type for this field.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:389-390
Timestamp: 2025-04-23T08:24:11.775Z
Learning: In the starknet.dart library, defaultMaxFee is defined in packages/starknet/lib/src/static_config.dart with a value of 0.001 ETH (converted to Felt format) and is available to files that import the Starknet package without requiring an explicit import of the static_config module.

Learnt from: rukafe0x
PR: #516
File: packages/starknet_provider/lib/src/model/wss_subscription_reorg.dart:11-14
Timestamp: 2025-05-09T15:46:52.558Z
Learning: In the Starknet WebSocket API v0.8.0, notification payloads use "subscription" as the JSON field name, requiring @JsonKey(name: 'subscription') annotation when mapping to differently named Dart properties like "subscription_id".

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:357-357
Timestamp: 2025-04-23T08:23:33.940Z
Learning: In the starknet.dart package, account0 is exported from static_config.dart and made available through the main package export in starknet.dart, so files that import package:starknet/starknet.dart have access to it without needing to directly import the static config file.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/test/account_test.dart:0-0
Timestamp: 2024-10-22T20:39:12.257Z
Learning: In packages/starknet/test/account_test.dart, when declaring ResourceBounds, maxAmount and maxPricePerUnit are intentionally passed as hex strings.

packages/starknet_paymaster/lib/starknet_paymaster.dart (13)

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/invoke_transaction.g.dart:27-27
Timestamp: 2024-11-21T18:02:58.562Z
Learning: In the packages/starknet_provider project, it's acceptable to include changes to auto-generated .g.dart files like packages/starknet_provider/lib/src/model/invoke_transaction.g.dart in commits, as they are necessary for the functionality.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/lib/src/account.dart:396-397
Timestamp: 2024-10-25T17:58:31.306Z
Learning: The signDeclareTransactionV2 function in packages/starknet/lib/src/account.dart is a legacy function and should not be modified.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:357-357
Timestamp: 2025-04-23T08:23:33.940Z
Learning: In the starknet.dart package, account0 is exported from static_config.dart and made available through the main package export in starknet.dart, so files that import package:starknet/starknet.dart have access to it without needing to directly import the static config file.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:0-0
Timestamp: 2025-04-23T08:23:55.912Z
Learning: In the starknet.dart package, account variables like account0 and account9 are exported from static_config.dart and available when importing 'package:starknet/starknet.dart' without needing explicit imports.

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/invoke_transaction.freezed.dart:26-31
Timestamp: 2024-10-26T15:39:54.600Z
Learning: In the starknet_provider/lib/src/model/invoke_transaction.freezed.dart file and other files with the .freezed.dart extension, the code is automatically generated by the freezed package and should not be manually modified.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/json_rpc_api_error.freezed.dart:26-31
Timestamp: 2024-11-21T18:01:50.217Z
Learning: The file packages/starknet_provider/lib/src/model/json_rpc_api_error.freezed.dart is auto-generated and should not be manually modified. Documentation changes should be made in the source file used to generate this code to ensure they persist upon regeneration.

Learnt from: rukafe0x
PR: #423
File: packages/starknet_provider/lib/src/model/deploy_account_transaction.dart:64-64
Timestamp: 2024-12-17T15:14:26.521Z
Learning: In packages/starknet_provider/lib/src/model/deploy_account_transaction.dart, the ResourceBounds class is imported through the starknet package, so an explicit import from 'declare_transaction.dart' is not necessary.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/block_number.freezed.dart:73-74
Timestamp: 2024-11-21T18:01:29.801Z
Learning: The file packages/starknet_provider/lib/src/model/block_number.freezed.dart is auto-generated and should not be modified directly.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:389-390
Timestamp: 2025-04-23T08:24:11.775Z
Learning: In the starknet.dart library, defaultMaxFee is exported from the static_config module and is available to files that import the Starknet package without requiring an explicit import of the static_config module.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/block_id.freezed.dart:98-100
Timestamp: 2024-11-21T18:01:22.136Z
Learning: In the starknet.dart project, modifications to auto-generated files generated by the Freezed package, like block_id.freezed.dart, may include documentation comments added via code generation. Do not flag modifications to auto-generated files in this project.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:0-0
Timestamp: 2025-04-23T08:24:16.502Z
Learning: In the starknet.dart project, test accounts like account0 and account9 are exported from the static_config.dart file and can be used directly in test files after importing the main starknet package.

Learnt from: rukafe0x
PR: #451
File: packages/avnu_provider/lib/src/typed_data/hash.dart:5-5
Timestamp: 2025-02-06T16:06:00.989Z
Learning: The poseidon functionality in the starknet package is only available through the internal path 'package:starknet/src/crypto/poseidon.dart' as it's not exposed through the public API.

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/invoke_transaction.dart:85-85
Timestamp: 2024-10-28T19:19:53.194Z
Learning: In packages/starknet_provider/lib/src/model/invoke_transaction.dart, the ResourceBounds class is accessible via the import of package:starknet_provider/starknet_provider.dart, so explicit import of declare_transaction.dart is unnecessary.

packages/starknet_paymaster/lib/src/types/transaction_hash.dart (14)

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/invoke_transaction.dart:83-104
Timestamp: 2024-11-21T23:07:45.157Z
Learning: In packages/starknet_provider/lib/src/model/invoke_transaction.dart, for the InvokeTransactionV3 class in Dart, when running in the devnet environment, the tip and resourceBounds fields must be hex strings instead of Felt because Felt is not supported in these fields by the devnet.

Learnt from: rukafe0x
PR: #411
File: packages/starknet_provider/lib/src/model/declare_transaction.dart:90-90
Timestamp: 2024-10-22T19:40:06.263Z
Learning: In packages/starknet_provider/lib/src/model/declare_transaction.dart, the tip field in DeclareTransactionV3 should remain a String because the target node doesn't support a Felt type for this field.

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/invoke_transaction.dart:88-88
Timestamp: 2024-10-28T19:20:40.540Z
Learning: In InvokeTransactionV3 class in packages/starknet_provider/lib/src/model/invoke_transaction.dart, the tip field is defined as a String because the development environment doesn't support a Felt type for this field.

Learnt from: rukafe0x
PR: #411
File: packages/starknet_provider/lib/src/model/declare_transaction.dart:0-0
Timestamp: 2024-10-25T19:15:32.489Z
Learning: In packages/starknet_provider/lib/src/model/declare_transaction.dart, the max_fee field in DeclareTransactionV2 is of type String instead of Felt because the devnet only supports a 16-byte length for this field, so we can't send this field as a Felt (it's too long).

Learnt from: rukafe0x
PR: #412
File: packages/starknet/lib/src/contract/model/compiled_class_hash.dart:43-51
Timestamp: 2024-10-26T15:07:09.798Z
Learning: In the file packages/starknet/lib/src/contract/model/compiled_class_hash.dart, the formula used in the hash method of BytecodeSegmentedNode comes from an official implementation and should not be changed.

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/invoke_transaction.freezed.dart:26-31
Timestamp: 2024-10-26T15:39:54.600Z
Learning: In the starknet_provider/lib/src/model/invoke_transaction.freezed.dart file and other files with the .freezed.dart extension, the code is automatically generated by the freezed package and should not be manually modified.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/lib/src/contract/model/compiled_class_hash.dart:184-190
Timestamp: 2024-10-26T15:08:10.453Z
Learning: In the file packages/starknet/lib/src/contract/model/compiled_class_hash.dart, the structure and placement of classes, including _BytecodeSegmentStructureResult, come from the original source and should not be changed.

Learnt from: rukafe0x
PR: #412
File: packages/starknet/lib/src/contract/model/compiled_class_hash.dart:27-28
Timestamp: 2024-10-26T15:05:20.368Z
Learning: In the file packages/starknet/lib/src/contract/model/compiled_class_hash.dart, the formula used in the hash method of BytecodeLeaf comes from the original source and should not be changed.

Learnt from: rukafe0x
PR: #423
File: packages/starknet/lib/src/account.dart:17-19
Timestamp: 2024-12-16T16:05:56.413Z
Learning: In the Dart file packages/starknet/lib/src/account.dart, the AccountSupportedTxVersion enum should continue to include the v0 variant, as retaining support for transaction version 0 is required at this time according to the maintainer's preference.

Learnt from: rukafe0x
PR: #411
File: packages/starknet/lib/src/contract/model/compiled_class_hash.dart:132-135
Timestamp: 2024-10-22T19:44:12.938Z
Learning: In the file packages/starknet/lib/src/contract/model/compiled_class_hash.dart, the formula used in the _createBytecodeSegmentStructureInner function comes from an official implementation and should not be changed.

Learnt from: ptisserand
PR: #505
File: packages/starknet/test/argent/argent_test.dart:389-390
Timestamp: 2025-04-23T08:24:11.775Z
Learning: In the starknet.dart library, defaultMaxFee is defined in packages/starknet/lib/src/static_config.dart with a value of 0.001 ETH (converted to Felt format) and is available to files that import the Starknet package without requiring an explicit import of the static_config module.

Learnt from: rukafe0x
PR: #516
File: packages/starknet_provider/lib/src/model/wss_subscription_reorg.dart:11-14
Timestamp: 2025-05-09T15:46:52.558Z
Learning: In the Starknet WebSocket API v0.8.0, notification payloads use "subscription" as the JSON field name, requiring @JsonKey(name: 'subscription') annotation when mapping to differently named Dart properties like "subscription_id".

Learnt from: rukafe0x
PR: #412
File: packages/starknet_provider/lib/src/model/declare_transaction.dart:103-106
Timestamp: 2024-10-26T14:59:26.758Z
Learning: In packages/starknet_provider/lib/src/model/declare_transaction.dart, within the ResourceBounds class, the fields maxAmount and maxPricePerUnit must remain as String type because they need to be sent as strings to the target host.

Learnt from: rukafe0x
PR: #417
File: packages/starknet_provider/lib/src/model/invoke_transaction.dart:83-104
Timestamp: 2024-11-21T23:08:45.593Z
Learning: In packages/starknet_provider/lib/src/model/invoke_transaction.dart, for the InvokeTransactionV3 class in Dart, data availability modes feeDataAvailabilityMode and nonceDataAvailabilityMode are used as strings 'L1' and 'L2', and enums are not required at this point.

packages/starknet_paymaster/lib/src/types/tracking_id.dart (10)