2025-10 monthly summary for getlago/lago-api: Focused on delivering key features for international invoicing and e-invoicing readiness, stabilizing tests, and enhancing localization.

September 2025 highlights across Lago’s API stack and client libraries (lago-api, lago-openapi, lago-go-client). Delivered improvements strengthen billing reliability, data integrity, API flexibility, and developer experience. Key outcomes include: (1) Billing and Invoicing correctness: enabled coupons for plans with child plans and fixed prepaid credit rounding to prevent negative totals, reducing revenue leakage; (2) Tax deletion data integrity: preserved historical invoice/fee data when deleting tax records by decoupling AppliedTax references from finalized invoices/fees; (3) API and integrations: added organization_id to outgoing webhooks and opened up flexible invoice filtering (multi-status and multi-payment_status) with a new subscription.updated webhook endpoint; (4) Customer activity logging: separated customer.created and customer.updated events to improve tracking accuracy; (5) Client SDK fix: Lago-go-client now uses the correct external_customer_id parameter for invoice listing filtering. These changes collectively improve revenue accuracy, data traceability, interoperability, and developer experience. Commit highlights: 87bc51ed50013540171ea97c60c1e9d947ef1fc4, 0987cc096c1b006eb4ddfaf6de7f38ca37d9ef11, fa572f4317fb289fb3d7ed7a91bc872a53d738b9, 415bbe4c74278eacc959e1ea5e897d5cdc227106, 46e2ea5e6d00abddbf567aa663b01c0818e36623, 792f6e0d01d2a43c2f70eaa990e0700152634486, f694e8580e8f4ac4110811696ca60a02f268f826, 2403c9e88592957e5454e44c14cf531992175af9, b60d0b666d6173564270c744c5684ce40e279812, b13c242b753892debdf03e19648345efb8536f2b, a1cd220c99bf75e09faa21f447d6057f7add2cd2

August 2025 monthly summary for getlago/lago-api focusing on business value, reliability, and data accessibility. Delivered features to improve auditability and segmentation, hardened error handling for external services, and reinforced payment data integrity. Key outcomes include configurable audit log retention, enhanced GraphQL filtering for active subscriptions, and robust resilience to service outages and third-party failures. The work drives admin efficiency, accurate analytics, and better user experience.

July 2025 performance summary: Delivered cross-repo security, reliability, and payment workflow improvements across lago-api, lago-go-client, and lago-openapi. Implemented organization-wide SSO enforcement with Auth::TokenService for standardized GraphQL token handling, added status-based filtering for PaymentRequests across REST, SDK, and OpenAPI surfaces, and strengthened logging and change governance. Key safeguards were introduced to prevent audit-log errors when Kafka/ClickHouse configurations are missing, and PaperTrail versioning was temporarily disabled during filter updates to avoid unnecessary history entries. Added plan_amount_cents to FeeAmountDetails to accurately represent base recurring costs. The work enhances business value through safer access control, improved payment management, and more reliable integrations across platforms.

June 2025 performance summary: Focused on expanding API observability, hardening integration points, and improving developer experience across Lago projects. Delivered API event logging capabilities, enhanced API definitions and client support, and refined operational controls to reduce exposure. The work improves monitoring, data integrity, security, and productivity, enabling faster debugging, auditing, and safer admin operations.

May 2025 monthly summary emphasizing improvements in auditability, API consistency, and payment workflow robustness across Lago's platform. Delivered key activity log capabilities, expanded client and GraphQL support, and reinforced overdue processing with event-driven design.

April 2025 (2025-04) monthly summary for lago-openapi focused on auditability and compliance improvements. Delivered a new API endpoint to retrieve a single activity log by ID and defined the activity_log schema to support precise auditing, regulatory reporting, and faster incident investigations.

March 2025 for getlago/lago focused on dev environment hygiene and risk reduction. Key feature delivered: Development Environment Configuration Cleanup to remove a hardcoded Lago license key. Major bug fixed: removal of unintended Lago license key from development config (commit 6dd7e56d18aef9dbdc7f6c836e9c555d33514eab, #477). Overall impact: reduces security and licensing risk, prevents credential leakage in dev workflows, and improves onboarding and CI/CD reliability. Technologies/skills demonstrated: configuration management, security best practices, Git traceability, and DevOps discipline.