March 2026 (2026-03) monthly summary for breez/spark-sdk. Delivered key PostgreSQL-backed features, stability improvements, and code-quality enhancements that collectively improve reliability, performance, and developer productivity. Focus areas included backend unification, cross-language tree-store support, comprehensive testing, and automated tooling. The month yielded measurable business value through reduced maintenance overhead, more robust serialization, and faster CI feedback.

February 2026 highlights for breez/spark-sdk: delivered a major persistence layer, API/config improvements, and performance optimizations, with broad impact on reliability and scalability.

January 2026: Focused on reducing maintenance burden, increasing reliability, and enabling scalable feature delivery in breez/spark-sdk. Delivered major dependency reductions and lib replacements, runtime synchronization and crypto option enhancements, web storage migration hardening and module refactor, CI/CD and Claude tooling upgrades, and signer/API improvements for safer, clearer usage. These changes reduce build size and risk, improve data integrity across versions, strengthen security with configurable randomness, and streamline developer workflows for faster, higher-quality releases.

December 2025 performance-focused update: Delivered significant signing enhancements in Breez Spark SDK and established a robust Nostr signing flow, while strengthening code quality and CI readiness. Key outcomes include non-blocking async signing with external signer support, a Schnorr-based NostrSigner with improved error handling and tests, and a macOS-14 compatible CI pipeline that improves release velocity and reliability.

October 2025 monthly summary for CocoaPods/Specs highlighting multi-version Breez SDK bindings, FFI bindings, and version management. Delivered Breez SDK Liquid and Spark integrations across multiple versions, core FFI and SDK bindings, and comprehensive version updates across BreezSDK components, enabling cross-language usage, improved client onboarding, and stronger platform compatibility.

September 2025 monthly summary for Breez project portfolio (repositories: breez/spark-sdk and CocoaPods/Specs). Delivered a broad set of features, reliability improvements, and developer experience enhancements across core wallet and service layers, with targeted refactors to improve maintainability and API stability. The work emphasized business value through improved deposit workflows, robust wallet/session composition, and consistent cross-repo hygiene.

August 2025 — Breez Spark SDK: delivered core feature enhancements, reliability fixes, and architectural improvements with a focus on business value and data integrity. Key features delivered: - SSP user requests on transfers enabled and Breez-specific payment details added to payments; API field renamed to invoice_fields; enhancements to payments/invoicing (PaymentMethod support and non-optional fields). - Spark integration and API enhancements: unified REST client, Spark endpoint usage for UTXOs, and API key validation/loading into config. - Data modeling and API usage modernization: builder pattern adoption, shared GraphQL models, From<Order> implementation, and Spark proto reforms for consistency. - Deposits and refunds improvements: monitoring of deposits, unclaimed deposits persistence API, and refund workflow. Major bugs fixed: - CI instability and flaky checks resolved; improved overall CI reliability. - Sync order corrections and paging filter logic/defaults fixes; plus rate and offset adjustments without pending payments. - Clippy and lint fixes, removal of unsafe unwraps, and enum serialization corrections. - Feedback fixes and general maintenance to improve user-facing behavior. Overall impact and accomplishments: - Significantly improved reliability, developer productivity, and data integrity across payments, deposits, and Spark integration; reduced risk in production deployments and smoother onboarding for new contributors. Technologies/skills demonstrated: - Rust-based implementation, protobuf formatting, GraphQL modeling, REST client patterns, async programming (tokio), code quality and lint discipline (Clippy), and API key handling and config management.

July 2025 performance summary for breez/spark-sdk and breez/breez-sdk-liquid. Business impact-focused delivery across multiple features, fixes, and release activities intended to improve reliability, developer experience, and go-to-market readiness. Key highlights: - Lightning receive and wallet cleanup improvements with concurrent leaves support and removal of timelock_manager, boosting payment throughput and reliability. - GraphQL reliability fixes: get fee estimate handling and conflict resolution to reduce user-facing errors in fee estimation. - Invoicing and routing enhancements: support for zero-amount invoices, improved Spark routing hints, and CLI QR code support for easier CLI interactions. - API/config hygiene and refactors: config validation, removal of spark prefix, API removals (query_pending_transfer), sequence validation tweaks, and targeted renaming/typo fixes to improve deployment reliability and consistency. - Release readiness and project hygiene: Breez SDK release 0.10.x line with version bumps to 0.10.1/0.10.2, swapproxy updates, and project-structure improvements including CLI fixes to accelerate production rollout.

June 2025 monthly performance summary for breez/spark-sdk focusing on business value, technical delivery, and quality. Key features delivered include establishing a separate Spark Wallet crate with an authenticated RPC surface and complete client methods, laying the foundation for wallet-based workflows. The Lightning subsystem was structurally defined with an initial architecture and anchor outputs, enabling scalable future Lightning features. The Tree module gained a solid structural foundation with robust error propagation and improved feedback handling. A major architectural refactor simplified the codebase by removing the usecases layer, flattening service structure, and consolidating models/ Spark protos. Wallet integration and Lightning invoicing were added to enable end-to-end payment flows. The team also delivered a secret sharing proofs function and applied polishing and CI reliability improvements. Key business value includes better security, modularity, faster feature delivery, more reliable releases, and a clearer path to end-to-end wallet and Lightning capabilities.

Month: 2025-05. Focused on stabilizing Breez SDK liquid by upgrading SDK versions (0.8.x to 0.9.x) and addressing wallet tip synchronization issues through lwk_wollet dependency updates. Delivered concrete version bumps and bug fixes that enhance release readiness, wallet reliability, and downstream compatibility. Key changes include: 0.8.3, 0.9.0, 0.9.1 version bumps; lwk_wollet tip sync fixes via newer revision; commits consolidated under release management to enable easier future patching.

April 2025 monthly summary focusing on production readiness, release discipline, and robustness across Breez SDK repos breez-sdk-liquid and breez-sdk-greenlight. The month delivered critical fixes, release bumps, and CI improvements that reduce risk in deployment, improve cross-repo consistency, and enhance error handling for real-world usage.

March 2025 monthly summary for breez/breez-sdk-liquid. Focused on strengthening the Swap Recovery testing story and enabling WASM/browser compatibility. Implemented a refactored testing framework, introduced mock services and swapper traits for isolated tests, and consolidated utilities to improve reliability and maintainability. This work reduces testing gaps across environments and supports future feature delivery with higher confidence.

February 2025 monthly summary (Month: 2025-02). This period focused on RC release readiness, Electrum integration improvements, sync reliability, and code quality. The work delivered business value by accelerating release cycles, stabilizing startup behavior, and enabling safer, more reliable operations across breez-sdk-liquid and breez-sdk-liquid-docs.

January 2025 monthly highlights for breez/breez-sdk-liquid. Delivered two core features focused on reliability and performance: Wallet Data Integrity and Reliability and Chain Tip Retrieval and Concurrency Improvements. Implemented robust error handling, configurable Electrum timeouts, reduced mutex contention, enhanced observability, and improved code quality. These changes directly improved wallet balance accuracy, full-scan reliability, and the resilience of tip retrieval after reconnects, while also simplifying maintenance through better formatting and logging. The work enhances production stability, fault diagnosis, and operator confidence for deployments.

2024-11 Monthly Summary: Delivered resilience and reliability improvements across Breez SDKs, focusing on data integrity and connection stability. Implemented a robust Wallet Creation Robustness and Data Integrity Recovery path to address data corruption, along with targeted code cleanup and clearer operator warnings. Enhanced Breez gRPC connection stability in Greenlight by introducing a configurable endpoint for keep-alive and timeouts and removing a redundant http2_keep_alive_interval setting. These efforts reduce operational risk, improve wallet lifecycle reliability, and stabilize Breez Server connections, enabling safer growth and smoother operator experience.

October 2024 focused on strengthening developer onboarding and expanding integration options for Breez SDK Liquid. Delivered the Self-signer integration guide with multi-language code samples (C#, Go, Kotlin, Python, Rust, Swift) to demonstrate connecting to Breez SDK Liquid using a custom self-signer instead of the default mnemonic-based approach. Updated the documentation site to reference the new self-signer guide (SUMMARY.md) and included a Python snippet fix within the self-signer examples to ensure correct imports and function calls. This work improves integration flexibility, speeds up onboarding for new users, and showcases cross-language documentation excellence in the breez-sdk-liquid-docs repository.