February 2026 monthly summary for LedgerHQ/device-sdk-ts focusing on reliability, security, and developer experience. Highlights include configurability for device polling, enhanced Speculos testing options, and improved ContextModule usability. Major bugs fixed strengthen transport reliability, input security, and context handling. Resulting improvements support more stable device interactions, faster development cycles, and stronger security posture across the SDK.

January 2026 monthly performance for LedgerHQ/device-sdk-ts: Delivered reliable testing, CI stability, and foundational platform improvements across core modules. Key outcomes include robust ERC-7730 testing with a dedicated script and CI adjustments, enhanced CS-tester visuals and helpers, timing reliability improvements for Speculos device signing, CI workflow/token hygiene, and builder/changeset enhancements enabling smoother development and release cycles.

December 2025 highlights: Delivered key features across Ledger Live and device-sdk-ts, strengthened release pipelines, and modernized testing and observability tooling. Business value focused on device compatibility, faster and more reliable releases, reproducible builds, and richer test coverage across the SDKs and tooling. Overall narrative: cross-repo alignment enabled by dependency upgrades, enhanced CI/CD, improved packaging and versioning discipline, and an expanded CS-tester/Speculos toolkit to shorten feedback loops and increase confidence before shipping.

November 2025 highlights focused on strengthening release tooling, observability, and signing workflow reliability across LedgerHQ/device-sdk-ts and LedgerHQ/ledger-live. Delivered a naming standard across signer backends, enhanced logging for command dispatch, expanded automated sign-flow testing, and refreshed dependency/versioning to enable faster, safer feature delivery. Implemented CI improvements and packaging workflows to reduce release risk and improve developer velocity while maintaining security and private packaging controls.

October 2025 monthly summary for LedgerHQ/device-sdk-ts. Focused on delivering repeatable release automation, UX improvements for Safe accounts, and enhanced validation and observability. Key productivity improvements include end-to-end release workflows, automated version bumps, improved transaction validation flow, and a comprehensive logging overhaul, all contributing to faster releases, lower risk, and better operator visibility.

September 2025 (2025-09) saw substantial feature deliveries, targeted bug fixes, and architectural refinements across signer-eth, context-module, and proxy/contest areas, aimed at improving device compatibility, signing safety, and developer velocity. Key work included proxy workflow restoration, calldata migration in context-module, and a series of refactors to improve maintainability and testing, complemented by release tooling improvements to streamline upcoming releases.

August 2025 monthly summary for LedgerHQ/device-sdk-ts focusing on Ethereum signer improvements, dynamic network data handling, and payload transmission reliability. Key features delivered include enhanced Ethereum transaction parsing with proxy support and nested calldata, dynamic network data source and context loader with network descriptors/icons for cross-chain accuracy, and a refactor of payload chunking to correctly handle length-prefixed payloads. Release tooling was improved through the addition of changesets to streamline future releases. These efforts collectively improved signing reliability for complex transactions, cross-chain consistency, and developer productivity.

Summary for 2025-07: Delivered a major overhaul of the Ethereum signer-eth context pipeline in the LedgerHQ/device-sdk-ts, introducing BuildSubContextTask, pre-build transaction mapping steps, and enhanced context handling (sub-contexts, cert loading, and selector handling) to strengthen signing robustness and maintainability. Completed release management work to reflect Ethereum signer-kit changes, enabling clearer release notes and faster customer adoption. Improvements reduce signing edge cases, simplify task orchestration, and position the codebase for upcoming features and audits. Technologies used include TypeScript, asynchronous task orchestration, refactoring, and changeset-based release tooling.

June 2025 monthly summary for LedgerHQ/device-sdk-ts: Delivered a feature to enhance proxy management and standardized web3 checks in the signing flow. Key business value includes improved proxy metadata access, robust APDU handling, and consistent signing behavior across flows. Notable outcomes include chunked ProvideProxyInfoCommand with robust error handling, HttpProxyDataSource exposing proxy metadata (delegate calls and implementation addresses), and a refactored signing flow that uses a context-driven approach for web3 checks rather than a dedicated web3Check flag. Release hygiene improved with an explicit changeset for tracking changes.

May 2025 monthly summary for LedgerHQ/device-sdk-ts focused on delivering essential features, stabilizing the release process, and improving monorepo health to enable faster, more reliable deployments and easier delegation workflows.

April 2025: Delivered security and reliability enhancements in LedgerHQ/device-sdk-ts. Key changes include: (1) Secure Ethereum signer transaction checks and signing flow improvements (reordering checks, originToken requirement, explicit web3 checks opt-in reporting, and signing state cleanup). (2) Release workflow moved to local Changesets, restoring local changeset configuration and removing CI-based versioning. (3) Context-module header standardization via a shared LEDGER_CLIENT_VERSION_HEADER constant. (4) Local development alignment by updating dependencies to use the local signer-utils in the workspace (pnpm lockfile updated). Impact: stronger security posture, faster and more deterministic releases, consistent client data headers across sources, and improved developer experience.

During 2025-03, the LedgerHQ/device-sdk-ts team delivered core safety hardening, improved signing workflows, and release-automation to strengthen deployment reliability and security. The month focused on stabilizing the release process, reducing risk of accidental exposure of private packages, and improving debuggability for signing flows, while also updating essential docs and changelogs. Key features delivered and value: - Context-module safety improvements: removed unsafe coerce to harden runtime safety and reduce risk of crashes in production. - Signer-eth update flow: added current step tracking in intermediateValue for signTx and signTD to improve debuggability and flow visibility during signing operations. - Monorepo release privacy handling: made all packages private during release and restored privacy after release to prevent leaks and enforce access controls. - Release packaging and versioning controls: stabilized release process with fixed versions, selective package deployment, and explicit version updates, enabling reliable, auditable releases of dmk, signer-eth, context-module and dependencies. - Documentation and release tooling improvements: added a changeset, updated release and signer-eth docs, migration docs, and PR template documentation improvements to streamline onboarding and cross-team communication. Major bugs fixed: - Context-module unsafe coerce removal reduced runtime risk and improved security posture. - Enum import fix in signer-eth module to prevent runtime/import-time errors. Overall impact and accomplishments: - Improved security, stability, and release reliability across the device-sdk-ts ecosystem, enabling faster, safer deployments and easier onboarding for new contributors. The changes also improve traceability through explicit versioning and release documentation, supporting better governance and compliance. Technologies/skills demonstrated: - TypeScript/monorepo tooling, release automation, and package privacy controls. - Release management, versioning strategies, and deployment scope planning. - Documentation hygiene, migration/update docs, and changelog discipline.

February 2025 summary for LedgerHQ/device-sdk-ts: Delivered end-to-end Web3checks integration and signer-eth enhancements, improved test coverage with Vitest, stabilized build processes, and strengthened release/maintenance workflows. The work focused on enabling secure, auditable verification and signing flows, expanding protocol support, and improving developer and release velocity.

January 2025 performance highlights for LedgerHQ/device-sdk-ts: two major feature deliveries focused on Ethereum signer robustness and PKI-backed transaction security, plus broader device/app compatibility and UX improvements. Delivered a signer API modernization with reduced external dependencies and new raw-transaction signing flows, expanded plugin/app context, and introduced PKI infrastructure for Ethereum transactions. These changes enhance security, reduce risk for users on older devices, and improve developer experience through clearer migration paths and documentation.

December 2024 (LedgerHQ/device-sdk-ts): Implemented key Ethereum signer improvements, enhanced calldata processing, and internal refactors to modularize transaction context and enable chunked payload handling. These changes increase reliability, test coverage, and developer velocity, laying groundwork for broader network support and future signer capabilities.

Month: 2024-11 — LedgerHQ/device-sdk-ts Key features delivered: - Get App Configuration for Solana signer: implemented GetAppConfiguration use case to retrieve device app configuration, added new types, dependency injection integration; GetAppConfigurationCommand now returns PublicKeyDisplayMode enum instead of boolean. Key commits include: 62f012480a82a7fa51a18cfd36c26d10baac161f, 2389c20c03b2f84583408691a34ba1f00a6cd348, 26a0fe9e946b9eca04b056e4f45b2aba096015f1, d706c4b7df0e1fffde29de84985feb867f2024fd. - Sign Transaction use case for Solana signer: added SignTransaction use case and integration in sample app and signer kit to enable signing Solana transactions via device action; StartTransactionCommand error handling improvements; updated docs/changesets. Notable commits: c931434f90391b97d71915822c8273cc5a752e06, de6aa20d98c300f2376d3b177467ed130eed5a34, c56a35ca87ce1420019897009527e674d5f10595, d9b50a28e406046d60ccda9c0ae1f217ce7892a1, 4995a57598f6e599d548dc657ebc5ee8c74a320b. - Internal refactors and housekeeping: dependency injection updates; ContextModule rework; test additions; signer BTC package rename; changesets; test updates for default signer Solana impl. Commits include: 6d25024feecaa12c304bfd4b4e2abfc4d085d6c2, b92be97b50597376cf7182c571617f7614f4eb94, 3b6943633e8b076a998db39ed92b753a6e5d3309, ede1e2b3a82bd2ecbebe8adb95004c5aed4aab14. Major bugs fixed: - Non-user-facing refactors and housekeeping resolved by improving dependency injection, test coverage, and release hygiene (changesets). - Specific fixes include: StartTransaction cmd should contain a signature (signer-eth) corrected; added missing test for default signer Solana impl; repository name and package rename updates to align with new architecture. These are captured in the corresponding commits above. Overall impact and accomplishments: - Strengthened multi-chain signer support readiness with Solana integration and improved security posture via explicit configuration and signing use cases. - Improved maintainability, test coverage, and developer experience through internal refactors, DI enhancements, and comprehensive documentation and changesets. - Clear traceability to commits enables faster audits and onboarding for new contributors. Technologies and skills demonstrated: - TypeScript, dependency injection, and use-case driven design for signer architectures - Sample app and signer kit integration for end-to-end Solana signing flows - Test-driven development and changeset-based release tagging - Documentation updates and internal refactor discipline

Summary for 2024-10: Delivered modular Solana signer capabilities and quality improvements in LedgerHQ/device-sdk-ts, driving secure signing flows, maintainability, and faster release cycles. Key features include GetAddressUseCase, GetAddress, and SignTransactionCommand with sample app support, plus refactoring of DefaultSignerSolana to consume the new use case. Improved code quality with ESLint type-import consistency, executed lint:fix across all packages, and aligned runtime dependencies by moving signer-utils from dev to prod. Release process strengthened with changesets and release notes across packages, enabling clearer versioning and stakeholder communication. Business impact includes a more secure, testable signer workflow, reduced defect risk, and clearer release communications, supported by stronger code hygiene and release automation.