When the `claude` CLI errors mid-stream, claude-agent-sdk throws a bare
`Exception("Command failed with exit code 1 …")` whose only text is the
useless `Check stderr output for details` placeholder — but the *actual*
failure reason (model 404, rate limit, auth) arrived a moment earlier as a
stream-json `ResultMessage(is_error=True)` carrying `result` text and
`api_error_status`. That was thrown away.
`_run_query` now captures `ResultMessage(is_error=True)` detail (and, as a
fallback, the trailing AssistantMessage text) and re-attaches it to the
raised exception as `_molecule_stream_detail`. `_format_process_error`
surfaces it as `cli_stream_error=…` and, when present, skips the
`_probe_claude_cli_error` re-probe (#160) — the probe can't replay the
failing `--model`/`--system-prompt` argv, so it may even succeed and
mislead. The probe stays as the last resort when there's nothing to salvage.
Regression context: the 2026-05-10 dev-team incident — six lead workspaces
404ing on every turn (`--model claude-code` → `api_error_status=404`,
"There's an issue with the selected model (claude-code)"), invisible for an
hour because the CLI wrote nothing to stderr and this text was discarded.
See internal#226 follow-up #5.
Tests: tests/test_executor_error_detail.py — 6 cases (format surfaces the
salvaged detail; format still probes when there's nothing salvaged; salvaged
detail takes precedence over the probe; _run_query annotates from
ResultMessage(is_error); _run_query falls back to assistant text; clean
success path unaffected). `pytest tests/` → 87 passed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
template-claude-code-default
Molecule AI workspace template for the claude-code-default runtime.
Usage
In Molecule AI canvas
Select this template when creating a new workspace — it appears in the template picker automatically.
From a URL (community install)
Paste this URL when creating a workspace:
github://Molecule-AI/template-claude-code-default
Files
config.yaml— workspace configuration (runtime, model, skills, etc.)system-prompt.md— agent system prompt (if present)
Auth paths
| Path | Env var(s) | Where to get the key |
|---|---|---|
| OAuth (Claude Code subscription) | CLAUDE_CODE_OAUTH_TOKEN |
claude login |
| Anthropic API (direct) | ANTHROPIC_API_KEY |
console.anthropic.com |
| Third-party Anthropic-compat (e.g. Xiaomi MiMo pay-as-you-go) | ANTHROPIC_API_KEY (provider's key) |
provider console |
| Xiaomi MiMo Token Plan | ANTHROPIC_API_KEY (Token Plan key), ANTHROPIC_BASE_URL (Token Plan endpoint) |
token-plan dashboard |
For third-party providers, entrypoint.sh rewrites ANTHROPIC_BASE_URL based on the selected MODEL so the claude CLI routes there. Currently auto-routes mimo-* models to https://api.xiaomimimo.com/anthropic (pay-as-you-go). Token Plan users should set ANTHROPIC_BASE_URL=https://token-plan-sgp.xiaomimimo.com/anthropic as a workspace or org-level secret — the shell mapping is the fallback and operator-set values always win. Other Token Plan endpoints (e.g. token-plan-hk.xiaomimimo.com) can be used by setting the secret explicitly.
Schema version
template_schema_version: 1 — compatible with Molecule AI platform v1.x.
License
Business Source License 1.1 — © Molecule AI.