diff --git a/.github/workflows/claude-code-review.yml b/.github/workflows/claude-code-review.yml
index 5795881..97bcbb1 100644
--- a/.github/workflows/claude-code-review.yml
+++ b/.github/workflows/claude-code-review.yml
@@ -47,6 +47,7 @@ jobs:
         id: claude-review
         uses: anthropics/claude-code-action@v1
         with:
+          show_full_output: true
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
           plugin_marketplaces: 'https://github.com/anthropics/claude-code.git'
           plugins: 'code-review@claude-code-plugins'
@@ -56,4 +57,9 @@ jobs:
           # is unverified reasoning about code it never executed.
           # See https://github.com/anthropics/claude-code-action/blob/main/docs/usage.md
           # or https://code.claude.com/docs/en/cli-reference for available options
-          claude_args: '--allowedTools "Bash(dotnet:*),Bash(gh pr edit:*),Bash(gh pr ready:*),Bash(gh pr view:*)"'
+          # --model pinned EXPLICITLY. Left to default, the CLI resolved to claude-opus-5[1m]
+          # -- the 1M-context variant, which this key cannot use -- and the first API call died
+          # in under half a second: is_error, zero cost, empty modelUsage, and the real error
+          # hidden by the default output redaction. show_full_output is on for the same reason:
+          # a failure that cannot be read from the log gets diagnosed by archaeology instead.
+          claude_args: '--model claude-opus-5 --allowedTools "Bash(dotnet:*),Bash(gh pr edit:*),Bash(gh pr ready:*),Bash(gh pr view:*)"'
diff --git a/.github/workflows/claude.yml b/.github/workflows/claude.yml
index a794ba1..ed444ef 100644
--- a/.github/workflows/claude.yml
+++ b/.github/workflows/claude.yml
@@ -34,6 +34,7 @@ jobs:
         id: claude
         uses: anthropics/claude-code-action@v1
         with:
+          show_full_output: true
           anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
 
           # This is an optional setting that allows Claude to read CI results on PRs
@@ -52,4 +53,9 @@ jobs:
           # repository: no build, no tests, so nothing it reports can have been verified.
           # See https://github.com/anthropics/claude-code-action/blob/main/docs/usage.md
           # or https://code.claude.com/docs/en/cli-reference for available options
-          claude_args: '--allowedTools "Bash(dotnet:*),Bash(gh pr edit:*),Bash(gh pr ready:*),Bash(gh pr view:*)"'
+          # --model pinned EXPLICITLY. Left to default, the CLI resolved to claude-opus-5[1m]
+          # -- the 1M-context variant, which this key cannot use -- and the first API call died
+          # in under half a second: is_error, zero cost, empty modelUsage, and the real error
+          # hidden by the default output redaction. show_full_output is on for the same reason:
+          # a failure that cannot be read from the log gets diagnosed by archaeology instead.
+          claude_args: '--model claude-opus-5 --allowedTools "Bash(dotnet:*),Bash(gh pr edit:*),Bash(gh pr ready:*),Bash(gh pr view:*)"'