feat: add browser wasm package

.github/workflows/ci.yml

@@ -86,6 +86,51 @@ jobs:
       - name: Run tests
         run: npm test
 
+  web:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: bindings/web
+
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6.3.0
+        with:
+          node-version: "22"
+
+      - name: Install Rust toolchain
+        run: |
+          rustup show active-toolchain || rustup install
+          rustup target add wasm32-unknown-unknown
+
+      - name: Install wasm-pack
+        uses: taiki-e/install-action@94a7388bec5d4c8dd93e3ebf09e0ff448f3f6f4d # v2.68.35
+        with:
+          tool: wasm-pack
+
+      - name: Cache cargo registry and build
+        uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            bindings/web/target
+          key: ${{ runner.os }}-web-cargo-${{ hashFiles('bindings/web/Cargo.lock') }}
+          restore-keys: ${{ runner.os }}-web-cargo-
+
+      - name: Verify Cargo.lock is up to date
+        run: cargo metadata --locked --format-version 1 > /dev/null
+
+      - name: Check Rust bindings
+        run: cargo check --features fast-kdf
+
+      - name: Build WASM package
+        run: wasm-pack build --dev --target bundler --out-dir pkg --features fast-kdf
+
+      - name: Run JS tests
+        run: npm test
+
   node-cross-compile:
     runs-on: ubuntu-latest
     defaults:

.gitignore

@@ -21,6 +21,9 @@ bindings/node/index.d.ts
 bindings/node/npm/*/*.node
 bindings/node/artifacts/
 
+# Web bindings
+bindings/web/pkg/
+
 # Website
 website/docs/md/
 website-docs/md/

README.md

@@ -27,12 +27,15 @@ Or install only what you need:
 npm install @open-wallet-standard/core     # Node.js SDK
 npm install -g @open-wallet-standard/core  # Node.js SDK + CLI (provides `ows` command)
 npm install @open-wallet-standard/adapters # Framework adapters (viem, Solana, WDK)
+npm install @open-wallet-standard/web      # Browser WASM SDK
 pip install open-wallet-standard           # Python
 cd ows && cargo build --workspace --release # From source
 ```
 
 The language bindings are **fully self-contained** — they embed the Rust core via native FFI. Installing globally with `-g` also provides the `ows` CLI. The [`@open-wallet-standard/adapters`](https://www.npmjs.com/package/@open-wallet-standard/adapters) package plugs an OWS wallet into viem, `@solana/web3.js`, and the Tether WDK.
 
+For websites, [`@open-wallet-standard/web`](bindings/web) provides a WASM SDK with browser storage adapters for OWS wallet, API-key, and policy artifacts.
+
 ## Quick Start
 
 ```bash
@@ -153,6 +156,7 @@ Reference implementation documentation:
 - [Quickstart](docs/quickstart.md)
 - [CLI Reference](docs/sdk-cli.md)
 - [Node.js SDK](docs/sdk-node.md)
+- [Browser WASM SDK](docs/sdk-web.md)
 - [Python SDK](docs/sdk-python.md)
 - [Policy Engine Implementation Guide](docs/03-policy-engine.md)