diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9d2b5d6..ce884dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.30.0] - 2026-08-30
+
+### Added
+
+- **`DeviceProvider.DownlevelCapabilities()`** — returns `gputypes.DownlevelCapabilities` for backend capability queries. Enables consumers (gg, g3d, Born ML) to check compute support, indirect execution, and other capabilities that may be absent on non-conformant backends (GLES 3.0, CPU software). Returns zero-value if implementation does not track downlevel capabilities (backward compatible). Matches Rust wgpu `Adapter::get_downlevel_capabilities()` pattern. Architecture: DeviceProvider interface method, not type-assert — follows Flutter Impeller "check capabilities, not backend type" principle. See ADR-071.
+
+### Changed
+
+- **deps:** gputypes v0.6.0 → v0.7.0 (DownlevelCapabilities types)
+
 ## [0.29.0] - 2026-08-27
 
 ### Added
diff --git a/device_provider.go b/device_provider.go
index fe67daa..e23ff60 100644
--- a/device_provider.go
+++ b/device_provider.go
@@ -58,4 +58,12 @@ type DeviceProvider interface {
 	// without importing wgpu. Returns 0 if the implementation does not
 	// track features (backward compatible — treat as no optional features).
 	Features() gputypes.Features
+
+	// DownlevelCapabilities returns backend capability flags for downlevel adapters.
+	// Consumers (e.g., gg) use this to query compute support, indirect execution,
+	// and other capabilities that may not be available on all backends (GLES 3.0).
+	// Returns zero-value DownlevelCapabilities if the implementation does not
+	// track downlevel capabilities (backward compatible — treat as no capabilities).
+	// Matches Rust wgpu Adapter::get_downlevel_capabilities() (adapter.rs:174).
+	DownlevelCapabilities() gputypes.DownlevelCapabilities
 }
diff --git a/go.mod b/go.mod
index 32ee990..954999e 100644
--- a/go.mod
+++ b/go.mod
@@ -2,4 +2,4 @@ module github.com/gogpu/gpucontext
 
 go 1.25
 
-require github.com/gogpu/gputypes v0.6.0
+require github.com/gogpu/gputypes v0.7.0
diff --git a/go.sum b/go.sum
index fac6f2e..1e52b59 100644
--- a/go.sum
+++ b/go.sum
@@ -1,2 +1,2 @@
-github.com/gogpu/gputypes v0.6.0 h1:nfjx0ek0jU97ziHmukJgUJZBzlTlls9hsnEeqIEZUxM=
-github.com/gogpu/gputypes v0.6.0/go.mod h1:cnXrDMwTpWTvJLW1Vreop3PcT6a2YP/i3s91rPaOavw=
+github.com/gogpu/gputypes v0.7.0 h1:1IcXGyPx8v6iAutpjwBYjcyYd3g6ep+FhThoZbhpVAg=
+github.com/gogpu/gputypes v0.7.0/go.mod h1:cnXrDMwTpWTvJLW1Vreop3PcT6a2YP/i3s91rPaOavw=