In some workflow contexts — reliably reproducible for us on
pull_request-triggered runs of this action — the Claude Agent SDK
query() async iterator does not close after the terminal result
message is emitted. The for-await loop in runClaudeWithSdk blocks
indefinitely after Claude has finished its work, until the workflow's
timeout-minutes cap kills the job.
Symptoms observed in production (4× in our scan-reviewer workflow):
- Claude completes successfully: SDK emits { type: "result",
subtype: "success", ... } with the cost / turns / duration set.
- The action then sits with zero log output for the rest of
timeout-minutes (we measured 18-19 min of dead time after result).
- The job is cancelled at timeout. writeExecutionFile is never
called → no claude-execution-output.json → cost-tracker and other
post-steps see nothing.
- Run shows as cancelled, even though Claude did its work and any
verdict it posted via gh tools already landed.
Author-mode (workflow_dispatch) runs from the same codebase
terminate cleanly the same day, so the hang is specific to certain
event triggers.
By SDK contract the result message is terminal — no further messages
follow. Break out of the loop immediately after capturing it,
regardless of whether the upstream iterator ever closes. If the SDK
is later fixed to close cleanly in all contexts, this break becomes
a no-op.
* chore: bump actions/setup-node from v4.4.0 to v6.4.0 (Node.js 24)
setup-node v4 runs on the deprecated Node.js 20 action runtime, producing
a deprecation warning on every workflow run that uses base-action. v6 runs
on Node 24. This only changes the action's own runtime — the node-version
it installs for user code is unaffected.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
* Disable setup-node v5+ automatic package-manager caching
Preserves v4 behavior: caching only when use_node_cache=true.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---------
Co-authored-by: ant-kurt <209710463+ant-kurt@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
* Add workload identity federation support to base-action
Move the workload identity module into base-action so the standalone
action can fetch and refresh the GitHub OIDC identity token itself, and
expose the same federation inputs as the outer action. Switch the
base-action test workflows from the anthropic_api_key secret to the
federation repo variables and grant them id-token: write.
* Verify MCP test tool invocation instead of init connection status
MCP servers can connect asynchronously, so the init event may report a
server as pending. Check that the server is registered at init, then
assert the test tool was actually called and returned its response.
Also pass the MCP config through claude_args --mcp-config, replacing the
removed mcp_config input.
* Add workload identity federation auth support
Adds anthropic_federation_rule_id, anthropic_organization_id,
anthropic_service_account_id, anthropic_workspace_id, and
anthropic_oidc_audience inputs. When the federation rule and organization
are set, the action fetches the workflow's GitHub Actions OIDC token,
writes it to a file in RUNNER_TEMP, keeps it refreshed during execution,
and points the Claude Code CLI at it via ANTHROPIC_IDENTITY_TOKEN_FILE so
the CLI can exchange it for a short-lived access token instead of using a
static API key.
* Add WIF example workflow and base-action federation docs
* Default workload identity OIDC audience to https://api.anthropic.com
* docs: add pull_request_target/workflow_run guidance and base-action trust model
Adds a security.md section on safe checkout patterns under
pull_request_target/workflow_run, and a trust-model section to the
base-action README clarifying that callers are responsible for the
working directory and prompt being trusted.
🏠 Remote-Dev: homespace
* docs: refine PRT/workflow_run guidance — root checkout + workflow_run ref
Second example now checks out the base ref at the workspace root before
the head-ref subdirectory checkout (this action expects a git repo at
the root). Adds the workflow_run ref form, drops the PRT-specific
gh-pr-diff hint from the first example, and generalises the closing
line to cover both event types.
🏠 Remote-Dev: homespace
* docs: use actions/checkout@v6 in examples (consistency)
🏠 Remote-Dev: homespace
