diff --git a/.github/workflows/base-demo-e2e.yml b/.github/workflows/base-demo-e2e.yml
index b6f7ef48..f21956ad 100644
--- a/.github/workflows/base-demo-e2e.yml
+++ b/.github/workflows/base-demo-e2e.yml
@@ -110,6 +110,18 @@ jobs:
             printf '  enabled: false\n'
           } >> "$HOME/.base.d/config.yaml"
 
+      - name: Trust the selected base-demo mise configuration
+        env:
+          BASE_DEMO_ROOT: ${{ github.workspace }}/../base-demo
+        run: |
+          set -euo pipefail
+          mise_config="$BASE_DEMO_ROOT/.mise.toml"
+          if [[ -f "$mise_config" ]]; then
+            mise trust "$mise_config"
+          else
+            printf 'No mise configuration declared by base-demo; continuing without provider trust.\n'
+          fi
+
       - name: Run Base demo end-to-end loop
         env:
           BASE_DEMO_ROOT: ${{ github.workspace }}/../base-demo
diff --git a/.github/workflows/ecosystem-release-bom.yml b/.github/workflows/ecosystem-release-bom.yml
index acb8c9c6..df3a42d6 100644
--- a/.github/workflows/ecosystem-release-bom.yml
+++ b/.github/workflows/ecosystem-release-bom.yml
@@ -189,6 +189,16 @@ jobs:
         if: matrix.platform == 'macos-14'
         run: ./bin/basectl setup --ci base --format json
 
+      - name: Trust the selected base-demo mise configuration
+        run: |
+          set -euo pipefail
+          mise_config="$GITHUB_WORKSPACE/../base-demo/.mise.toml"
+          if [[ -f "$mise_config" ]]; then
+            mise trust "$mise_config"
+          else
+            printf 'No mise configuration declared by base-demo; continuing without provider trust.\n'
+          fi
+
       - name: Validate Base release stack
         run: |
           set -euo pipefail
diff --git a/docs/manifest-command-trust.md b/docs/manifest-command-trust.md
index 00a9aa81..88befa94 100644
--- a/docs/manifest-command-trust.md
+++ b/docs/manifest-command-trust.md
@@ -55,6 +55,13 @@ and user-settings plan, and applying that plan requires
 `--allow-project-ide-mutations`. `--yes` never supplies this approval. This
 keeps command execution trust and machine-wide IDE mutation consent separate.
 
+`mise` configuration trust remains owned by mise. A disposable CI checkout that
+declares `.mise.toml` must explicitly trust that reviewed file before running
+`basectl setup`; use a path-scoped command such as `mise trust
+/workspace/base-demo/.mise.toml`. This does not trust the user's whole home
+directory, and it does not grant Base manifest-command approval. CI should keep
+this provider trust step separate from `basectl trust allow <project>`.
+
 ## Runtime verification consent
 
 Project `check` and `doctor`, workspace `check` and `doctor`, and workspace
diff --git a/tests/test_github_workflows.py b/tests/test_github_workflows.py
index ae66e8a9..c96899ae 100644
--- a/tests/test_github_workflows.py
+++ b/tests/test_github_workflows.py
@@ -321,6 +321,19 @@ def test_base_demo_e2e_workflow_covers_the_external_project_loop() -> None:
     assert job["env"]["BASE_DEMO_FULL_VALIDATION"] == "1"
     assert job["env"]["BASE_CLI_SOURCE_DIR"].endswith(".dependencies/base-cli/lib/python")
 
+    trust_step_index = next(
+        index
+        for index, step in enumerate(steps)
+        if isinstance(step, dict) and step.get("name") == "Trust the selected base-demo mise configuration"
+    )
+    setup_step_index = next(
+        index
+        for index, step in enumerate(steps)
+        if isinstance(step, dict) and "basectl setup --ci base-demo" in step.get("run", "")
+    )
+    assert trust_step_index < setup_step_index
+    assert 'mise trust "$mise_config"' in steps[trust_step_index]["run"]
+
     checkout_repositories = [
         step.get("with", {}).get("repository")
         for step in steps
@@ -357,6 +370,22 @@ def test_base_demo_e2e_workflow_covers_the_external_project_loop() -> None:
     assert "BASE_DEMO_ROOT/base_manifest.yaml" in run_commands
     assert "--non-interactive" in run_commands
 
+    bom_workflow = load_workflow(ECOSYSTEM_RELEASE_BOM_WORKFLOW)
+    bom_compatibility = bom_workflow["jobs"]["compatibility"]
+    bom_steps = bom_compatibility["steps"]
+    bom_trust_step_index = next(
+        index
+        for index, step in enumerate(bom_steps)
+        if isinstance(step, dict) and step.get("name") == "Trust the selected base-demo mise configuration"
+    )
+    bom_setup_step_index = next(
+        index
+        for index, step in enumerate(bom_steps)
+        if isinstance(step, dict) and "basectl setup --ci base-demo" in step.get("run", "")
+    )
+    assert bom_trust_step_index < bom_setup_step_index
+    assert 'mise trust "$mise_config"' in bom_steps[bom_trust_step_index]["run"]
+
 
 def test_copilot_repository_instructions_stay_anchored_to_base_guidance() -> None:
     text = COPILOT_INSTRUCTIONS.read_text(encoding="utf-8")