diff --git a/.github/workflows/build-docker.yml b/.github/workflows/build-docker.yml
index bca3967..ca7c016 100644
--- a/.github/workflows/build-docker.yml
+++ b/.github/workflows/build-docker.yml
@@ -56,7 +56,7 @@ jobs:
       - name: Read image version from versions.yaml
         id: imgver
         run: |
-          VER=$(uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --print-version aether-gateway)
+          VER=$(uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --print-version aether-gateway)
           echo "version=$VER" >> "$GITHUB_OUTPUT"
           echo "major_minor=$(echo $VER | cut -d. -f1-2)" >> "$GITHUB_OUTPUT"
 
@@ -132,7 +132,7 @@ jobs:
       - name: Read image version from versions.yaml
         id: imgver
         run: |
-          VER=$(uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --print-version aether-gateway)
+          VER=$(uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --print-version aether-gateway)
           echo "version=$VER" >> "$GITHUB_OUTPUT"
           echo "major_minor=$(echo $VER | cut -d. -f1-2)" >> "$GITHUB_OUTPUT"
 
@@ -210,7 +210,7 @@ jobs:
       - name: Read image version from versions.yaml
         id: imgver
         run: |
-          VER=$(uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --print-version aether-gateway)
+          VER=$(uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --print-version aether-gateway)
           echo "version=$VER" >> "$GITHUB_OUTPUT"
           echo "major_minor=$(echo $VER | cut -d. -f1-2)" >> "$GITHUB_OUTPUT"
 
diff --git a/.github/workflows/proto-check.yml b/.github/workflows/proto-check.yml
index 43322f6..7408e52 100644
--- a/.github/workflows/proto-check.yml
+++ b/.github/workflows/proto-check.yml
@@ -46,7 +46,7 @@ jobs:
         uses: astral-sh/setup-uv@v9.0.0
 
       - name: Verify generated Go code is up to date
-        run: uvx --from 'scitrera-repo-tools==0.1.18' compile-protos --check --lang go
+        run: uvx --from 'scitrera-repo-tools==0.1.19' compile-protos --check --lang go
 
   proto-check-python:
     name: compile-protos --check (python)
@@ -65,7 +65,7 @@ jobs:
         run: pip install grpcio-tools==1.81.1
 
       - name: Verify generated Python code is up to date
-        run: uvx --from 'scitrera-repo-tools==0.1.18' compile-protos --check --lang python --python "$(which python)"
+        run: uvx --from 'scitrera-repo-tools==0.1.19' compile-protos --check --lang python --python "$(which python)"
 
   proto-check-typescript:
     name: compile-protos --check (typescript)
@@ -85,4 +85,4 @@ jobs:
         uses: astral-sh/setup-uv@v9.0.0
 
       - name: Verify generated TypeScript code is up to date
-        run: uvx --from 'scitrera-repo-tools==0.1.18' compile-protos --check --lang typescript
+        run: uvx --from 'scitrera-repo-tools==0.1.19' compile-protos --check --lang typescript
diff --git a/.github/workflows/publish-npm.yml b/.github/workflows/publish-npm.yml
index 0741ecb..ea68ee6 100644
--- a/.github/workflows/publish-npm.yml
+++ b/.github/workflows/publish-npm.yml
@@ -30,6 +30,7 @@ jobs:
       name: npm
     permissions:
       contents: read
+      id-token: write
     steps:
       - uses: actions/checkout@v6
 
@@ -42,7 +43,7 @@ jobs:
           registry-url: 'https://registry.npmjs.org'
 
       - name: Rewrite local refs to version pins
-        run: uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --release
+        run: uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --release
 
       - name: Install dependencies
         run: npm ci
@@ -53,7 +54,7 @@ jobs:
         working-directory: sdk/typescript
 
       - name: Publish to npm
-        run: npm publish --access public
+        run: npm publish --access public --provenance
         working-directory: sdk/typescript
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/.github/workflows/publish-python.yml b/.github/workflows/publish-python.yml
index 4266187..e471371 100644
--- a/.github/workflows/publish-python.yml
+++ b/.github/workflows/publish-python.yml
@@ -32,14 +32,14 @@ jobs:
         uses: astral-sh/setup-uv@v9.0.0
 
       - name: Verify versions are in sync
-        run: uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --check --verbose
+        run: uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --check --verbose
 
       - name: Compare tag against versions.yaml
         if: github.ref_type == 'tag'
         run: |
           set -euo pipefail
           tag="${GITHUB_REF_NAME#v}"
-          declared="$(uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --print-version aether-sdk-python)"
+          declared="$(uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --print-version aether-sdk-python)"
           if [ "$tag" != "$declared" ]; then
             echo "::error::Tag ${GITHUB_REF_NAME} does not match the aether-sdk-python version declared in versions.yaml ($declared)"
             exit 1
@@ -66,7 +66,7 @@ jobs:
           python-version: '3.12'
 
       - name: Rewrite local refs to version pins
-        run: uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --release
+        run: uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --release
 
       - name: Build sdist + wheel
         run: |
@@ -106,7 +106,7 @@ jobs:
           python-version: '3.12'
 
       - name: Rewrite local refs to version pins
-        run: uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --release
+        run: uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --release
 
       - name: Build sdist + wheel
         run: |
diff --git a/.github/workflows/version-check.yml b/.github/workflows/version-check.yml
index ade96af..7c62817 100644
--- a/.github/workflows/version-check.yml
+++ b/.github/workflows/version-check.yml
@@ -33,4 +33,4 @@ jobs:
         uses: astral-sh/setup-uv@v9.0.0
 
       - name: Verify versions are in sync
-        run: uvx --from 'scitrera-repo-tools==0.1.18' sync-versions --check --verbose
+        run: uvx --from 'scitrera-repo-tools==0.1.19' sync-versions --check --verbose
diff --git a/versions.yaml b/versions.yaml
index 3a930c7..2d14de8 100644
--- a/versions.yaml
+++ b/versions.yaml
@@ -63,7 +63,7 @@ ci:
   # release, which is the same unpinned-tooling drift proto-check exists to
   # catch. Bump in lockstep with the proto toolchain when repo-tools changes
   # generated output.
-  repo_tools_source: "scitrera-repo-tools==0.1.18"
+  repo_tools_source: "scitrera-repo-tools==0.1.19"
   # `push_branches` is deliberately unset, so develop stays in both the push and
   # pull_request trigger lists and every check runs twice for a commit pushed to
   # an open PR's branch. That is the intended trade: both runs complete and both
@@ -97,6 +97,14 @@ ci:
     # the one Python project whose version tracks the tag; ag2 is versioned
     # independently (0.0.2), so a single tag cannot verify both.
     verify_tag_version: aether-sdk-python
+  npm:
+    # Load-bearing, not cosmetic. It grants id-token: write to the publish job,
+    # which is what lets npm mint an OIDC token and sign a provenance statement.
+    # Without it the publish falls back to plain token auth and this package
+    # rejects it with a misleading 404 — the mode every tag-triggered npm publish
+    # has failed in, including v0.1.60 and v0.2.1. NODE_AUTH_TOKEN is still sent;
+    # the token and OIDC are used together.
+    use_provenance: true
   go:
     # -short matches what test.yml runs for unit CI: without it the suite tries
     # to reach RabbitMQ/Valkey/Postgres, which only the integration job provides.