diff --git a/.github/workflows/dx-e2e-beta.yml b/.github/workflows/dx-e2e-beta.yml
index 5547ffb..12bffc8 100644
--- a/.github/workflows/dx-e2e-beta.yml
+++ b/.github/workflows/dx-e2e-beta.yml
@@ -63,6 +63,21 @@ jobs:
           journey: ${{ matrix.journey }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
 
+  swift-sdk:
+    name: beta (macos-15 · 11-swift-sdk)
+    needs: warmup
+    runs-on: macos-15
+    steps:
+      - uses: actions/checkout@v4
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: '16.4'
+      - uses: ./.github/actions/dx-e2e-run
+        with:
+          channel: beta
+          journey: 11-swift-sdk
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
   java-sdk:
     name: beta (ubuntu-24.04 · 12-java-sdk)
     needs: warmup
diff --git a/.github/workflows/dx-e2e-stable.yml b/.github/workflows/dx-e2e-stable.yml
index 361d386..e31e641 100644
--- a/.github/workflows/dx-e2e-stable.yml
+++ b/.github/workflows/dx-e2e-stable.yml
@@ -66,6 +66,21 @@ jobs:
           journey: ${{ matrix.journey }}
           github-token: ${{ secrets.GITHUB_TOKEN }}
 
+  swift-sdk:
+    name: stable (macos-15 · 11-swift-sdk)
+    needs: warmup
+    runs-on: macos-15
+    steps:
+      - uses: actions/checkout@v4
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: '16.4'
+      - uses: ./.github/actions/dx-e2e-run
+        with:
+          channel: stable
+          journey: 11-swift-sdk
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
   java-sdk:
     name: stable (ubuntu-24.04 · 12-java-sdk)
     needs: warmup
diff --git a/journeys/11-swift-sdk/Package.swift b/journeys/11-swift-sdk/Package.swift
new file mode 100644
index 0000000..59d3b79
--- /dev/null
+++ b/journeys/11-swift-sdk/Package.swift
@@ -0,0 +1,21 @@
+// swift-tools-version: 6.1
+
+import PackageDescription
+
+let package = Package(
+  name: "SwiftSDKJourney",
+  platforms: [.macOS(.v14)],
+  dependencies: [
+    .package(url: "https://github.com/tx3-lang/swift-sdk.git", exact: "0.15.0"),
+    .package(name: "DemoClient", path: "__GENERATED__"),
+  ],
+  targets: [
+    .executableTarget(
+      name: "SwiftSDKJourney",
+      dependencies: [
+        .product(name: "Tx3SDK", package: "swift-sdk"),
+        .product(name: "DemoClient", package: "DemoClient"),
+      ]
+    )
+  ]
+)
diff --git a/journeys/11-swift-sdk/README.md b/journeys/11-swift-sdk/README.md
new file mode 100644
index 0000000..20ff904
--- /dev/null
+++ b/journeys/11-swift-sdk/README.md
@@ -0,0 +1,54 @@
+# 11-swift-sdk
+
+The generated Swift client developer journey against the real assembled toolchain: `trix`
+scaffolds a project, its built-in `swift-client` plugin delegates to the real `tx3c` template,
+SwiftPM compiles that generated package inside a clean host consumer, and the executable drives
+resolve → sign → submit → confirmed against the disposable local Dolos devnet.
+
+- **Scope:** native macOS runtime journey. It requires Swift 6.1/Xcode 16.4, Git, and the normal
+  `trix`, `tx3c`, `dolos`, and `cshell` toolchain. No live-network secret is used.
+- **Toolchain gate:** `#@ min-tx3c: 0.25.0`, the first tx3c release containing the built-in
+  `swift-client` template. Older tx3c releases skip before checking the Swift prerequisite. The
+  journey also fails explicitly
+  if trix is older than `0.28.0`, the first release registering `swift-client`. Stable and beta
+  manifests must supply tx3c `^0.25.0` and trix `^0.28.0` for CI to count as coverage.
+- **Package pin:** the host package requires the public Swift SDK at exactly `0.15.0`
+  (published annotated tag `v0.15.0`). The generated
+  package's `from: 0.15.0` constraint therefore resolves to that exact version as well.
+- **Fixtures:** `Package.swift` and `main.swift` model the host application. Generated files stay
+  under `.tx3/codegen/swift-client/demo/` and are never checked in.
+
+For pre-publication validation only, `TX3_SWIFT_SDK_PATH=/path/to/reviewed/swift-sdk` makes the
+journey clone that checkout into its disposable workdir, tag the clone as `0.15.0`, and configure a
+SwiftPM mirror. This exercises the same exact-version package graph without mutating the source
+checkout. Released-channel CI intentionally leaves the override unset and resolves the public tag.
+
+## Phases
+
+1. `trix init -y` and `trix codegen --plugin swift-client` assert built-in rendering, per-protocol
+   layout, the embedded TIR envelope, party setters, and the typed transaction method.
+2. `swift build --configuration debug` compiles both the generated `DemoClient` library and an
+   independent executable consumer against the exact SDK package requirement.
+3. `devnet.toml` funds the canonical CIP-1852 signer vector from
+   `sdk-spec/test-vectors/crypto/signer-vectors.json`; the consumer binds that vector's mnemonic
+   and address with trix's deterministic `bob` receiver. trix's `alice` uses an underived Icarus
+   root key and cannot be used with the SDK's CIP-1852 signer. The consumer resolves, signs, and
+   submits a transfer, then waits for a confirmed status from the local devnet. The exit trap
+   reaps only this journey's Dolos config path, including when devnet startup or the consumer fails.
+
+## Verification
+
+```sh
+TX3_TRIX_PATH=/path/to/trix \
+TX3_TX3C_PATH=/path/to/tx3c \
+TX3_DOLOS_PATH=/path/to/dolos \
+TX3_CSHELL_PATH=/path/to/cshell \
+  ./run.sh --local --journey 11-swift-sdk
+
+./run.sh --channel stable --journey 11-swift-sdk
+./run.sh --channel beta --journey 11-swift-sdk
+```
+
+Both CI workflows select this journey on native `macos-15` with Xcode `16.4`. A missing Swift
+compiler or unresolved SDK package fails the job. Failed runs preserve the consumer, generated
+package, devnet files, and command logs through the harness's artifact upload.
diff --git a/journeys/11-swift-sdk/devnet.toml b/journeys/11-swift-sdk/devnet.toml
new file mode 100644
index 0000000..f0a9197
--- /dev/null
+++ b/journeys/11-swift-sdk/devnet.toml
@@ -0,0 +1,5 @@
+# Canonical SDK CIP-1852 signer vector, funded only in this disposable devnet.
+# Source: sdk-spec/test-vectors/crypto/signer-vectors.json (cardanoCip1852).
+[[utxos]]
+address = "addr_test1vq8ac7qqy0vtulyl7wntmsxc6wex80gvcyjy33qffrhm7ss9hjl0y"
+value = 100000000000
diff --git a/journeys/11-swift-sdk/journey.sh b/journeys/11-swift-sdk/journey.sh
new file mode 100755
index 0000000..90d20e6
--- /dev/null
+++ b/journeys/11-swift-sdk/journey.sh
@@ -0,0 +1,109 @@
+#!/usr/bin/env bash
+#
+# Journey 11 — Swift SDK generated-client DX. See README.md for coverage.
+# Run via e2e/run.sh, which provides $TRIX and an isolated working directory.
+#
+#@ min-tx3c: 0.25.0
+
+source "${E2E_LIB:?E2E_LIB not set — run this journey via e2e/run.sh}"
+
+JOURNEY_HOME="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+
+journey_begin "11-swift-sdk" "generate a Swift client → compile a clean consumer → sign, submit, and confirm on devnet"
+
+TRIX_VERSION="$("${TRIX}" --version | sed -n 's/^trix //p')"
+version_ge "${TRIX_VERSION}" "0.28.0" \
+  || die "journey 11 requires trix >= 0.28.0 with the built-in swift-client plugin"
+
+command -v swift >/dev/null 2>&1 \
+  || die "swift not found — journey 11 requires the approved macOS/Xcode runner"
+command -v git >/dev/null 2>&1 || die "git not found — SwiftPM package resolution requires git"
+
+# 1. Scaffold under the stable protocol name `demo`, then drive trix into the
+# built-in tx3c swift-client template. The output is a standalone SwiftPM
+# package, unlike the bare-module TypeScript output exercised by journey 07.
+mkdir demo && cd demo
+run_cmd "trix init -y — scaffold a new project" "${TRIX}" init -y
+run_cmd "trix codegen --plugin swift-client — generate bindings" \
+  "${TRIX}" codegen --plugin swift-client
+assert_output_contains "Added [[codegen]]" "plugin entry seeded into trix.toml"
+assert_output_contains "Bindgen successful for 'demo'"
+grep -qiF "Reading template from" "${LAST_OUTPUT_FILE}" \
+  && die "built-in plugin downloaded templates instead of using tx3c's built-in template"
+ok "built-in swift-client template rendered by tx3c, no template download"
+
+GENERATED="${PWD}/.tx3/codegen/swift-client/demo"
+assert_exists "${GENERATED}/Package.swift" "generated SwiftPM package manifest"
+assert_exists "${GENERATED}/Sources/DemoClient/Client.swift" "generated typed client"
+assert_exists "${GENERATED}/Sources/DemoClient/Types.swift" "generated parameter types"
+[[ -e "${PWD}/.tx3/codegen/swift-client/Package.swift" ]] \
+  && die "generated package leaked outside the per-protocol subdirectory"
+
+run_cmd "read the generated client" cat "${GENERATED}/Sources/DemoClient/Client.swift"
+assert_output_contains 'PROTOCOL_NAME = "demo"' "protocol identity embedded"
+assert_output_contains "TRANSFER_TIR" "transfer TIR envelope embedded"
+assert_output_contains "struct DemoClient" "typed Swift client emitted"
+assert_output_contains "func withSender" "sender party setter emitted"
+assert_output_contains "func transfer" "typed transfer builder emitted"
+
+# 2. Compile a separate host package. Its direct exact SDK requirement pins the
+# generated package's compatible `from: 0.15.0` constraint to precisely 0.15.0.
+mkdir -p app/Sources/SwiftSDKJourney
+sed "s|__GENERATED__|${GENERATED}|g" "${JOURNEY_HOME}/Package.swift" > app/Package.swift
+cp "${JOURNEY_HOME}/main.swift" app/Sources/SwiftSDKJourney/main.swift
+
+# Pre-publication runs may point at a reviewed SDK checkout without mutating it.
+# Clone it inside the disposable journey workdir, add the release-equivalent
+# tag there, and use SwiftPM's official mirror mechanism. Released-channel CI
+# leaves this unset and therefore resolves the real public 0.15.0 tag.
+if [[ -n "${TX3_SWIFT_SDK_PATH:-}" ]]; then
+  [[ -f "${TX3_SWIFT_SDK_PATH}/Package.swift" ]] \
+    || die "TX3_SWIFT_SDK_PATH must name a Swift SDK checkout"
+  run_cmd "clone reviewed Swift SDK checkout for local package resolution" \
+    git clone --quiet "${TX3_SWIFT_SDK_PATH}" .tx3/swift-sdk-mirror
+  run_cmd "tag the disposable mirror as the release-equivalent 0.15.0" \
+    git -C .tx3/swift-sdk-mirror tag 0.15.0
+  run_cmd "configure the consumer to use the local SDK mirror" \
+    swift package --package-path app config set-mirror \
+      --original https://github.com/tx3-lang/swift-sdk.git \
+      --mirror "file://${PWD}/.tx3/swift-sdk-mirror"
+fi
+
+run_cmd "swift build --configuration debug — compile generated client and consumer" \
+  swift build --package-path app --configuration debug
+assert_exists "app/.build/debug/SwiftSDKJourney" "host consumer compiled"
+
+# 3. Fund the canonical CIP-1852 signer vector in this disposable devnet.
+# trix's alice uses an underived Icarus root key, so it cannot be bound to
+# CardanoSigner. These public SDK vector credentials are devnet-only fixtures.
+cp "${JOURNEY_HOME}/devnet.toml" devnet.toml
+ALICE="addr_test1vq8ac7qqy0vtulyl7wntmsxc6wex80gvcyjy33qffrhm7ss9hjl0y"
+BOB="$("${TRIX}" identities bob address-testnet 2>/dev/null | grep '^addr' | head -n1)"
+[[ -n "${BOB}" ]] || die "could not resolve bob's testnet address"
+ALICE_MNEMONIC="abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"
+
+DEVNET_HOME="${PWD}/.tx3/dolos"
+cleanup_devnet() {
+  # Install before startup and match only this journey's unique config path.
+  pkill -f "dolos.*${DEVNET_HOME}/dolos[.]toml daemon" >/dev/null 2>&1 || true
+}
+trap cleanup_devnet EXIT
+run_cmd "trix devnet --background — start a local devnet" "${TRIX}" devnet --background
+assert_output_contains "devnet started in background"
+for _ in $(seq 1 30); do
+  (exec 3<>/dev/tcp/127.0.0.1/8164) 2>/dev/null && { exec 3>&- 3<&-; break; }
+  sleep 1
+done
+sleep 3
+
+run_cmd "SwiftSDKJourney — resolve, sign, submit, and confirm a transfer" \
+  app/.build/debug/SwiftSDKJourney \
+    "http://127.0.0.1:8164" "${ALICE}" "${BOB}" "${ALICE_MNEMONIC}"
+assert_output_contains '"hash"' "submitted transaction hash returned"
+if grep -Eq '"status":"(confirmed|finalized)"' "${LAST_OUTPUT_FILE}"; then
+  ok "submitted transaction confirmed"
+else
+  die "submitted transaction did not reach confirmed or finalized status"
+fi
+
+journey_end
diff --git a/journeys/11-swift-sdk/main.swift b/journeys/11-swift-sdk/main.swift
new file mode 100644
index 0000000..bf0677a
--- /dev/null
+++ b/journeys/11-swift-sdk/main.swift
@@ -0,0 +1,30 @@
+import DemoClient
+import Foundation
+import Tx3SDK
+
+let arguments = CommandLine.arguments
+guard arguments.count == 5, let endpoint = URL(string: arguments[1]) else {
+  FileHandle.standardError.write(
+    Data("usage: SwiftSDKJourney <trp-endpoint> <sender> <receiver> <sender-mnemonic>\n".utf8)
+  )
+  exit(2)
+}
+
+let sender = try Address(arguments[2])
+let receiver = try Address(arguments[3])
+let signer = try CardanoSigner(mnemonic: arguments[4], address: sender)
+
+let client = DemoClient(
+  options: ClientOptions(endpoint: endpoint),
+  profile: .local
+)
+.withSender(.signer(signer))
+.withReceiver(.address(receiver))
+
+let resolved = try await client.transfer(TransferParams(quantity: 2_000_000)).resolve()
+let submitted = try await resolved.sign().submit()
+let status = try await submitted.waitForConfirmed(
+  PollConfig(attempts: 30, delay: .seconds(1))
+)
+
+print("{\"hash\":\"\(submitted.hash)\",\"status\":\"\(status.stage.rawValue)\"}")