@@ -7,6 +7,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.5.0] - 2026-04-18
+
+### Added
+
+- **External Tool Bridge**: Added proxy-level bridging for external OpenAI-compatible `tools` across `/v1/chat/completions` and `/v1/responses`.
+- **Streaming Tool Call Parity**: Added streaming support for external tool calls in both Chat Completions and Responses APIs.
+- **Explicit External Tool Config**: Added explicit `EXTERNAL_TOOLS_MODE=proxy-bridge` and `EXTERNAL_TOOLS_CONFLICT_POLICY=namespace` configuration surface and documentation.
+
+### Changed
+
+- **Project Version**: Bumped the repository version to `1.5.0` across package metadata and documentation badges.
+
 ### Fixed
 
 - **Jest Test Shutdown**: Removed a lingering queue rescheduling timer from the proxy request lock flow and updated the default test command to use the verified clean Jest invocation, eliminating the previous generic open-handle warning during `npm test`.