Cause (Documented platform behavior): Server-side classifier review needs the verdict to pass through; gateways that truncate/rewrite streams drop it.
Fix status: documented_behavior
Other error fragments:
- Auto mode is unavailable — the server returned no safety verdict for the last 10 responses, so Claude stopped.
Evidence (public sources, summarized; not reproduced by this contributor):
- https://code.claude.com/docs/en/errors#the-server-returned-no-safety-verdict (official_docs, unknown, documented_behavior): Docs: 10 consecutive no-verdict responses stop the turn (v2.1.280+); gateways that cut/rewrite streams cause it; CLAUDE_CODE_AUTO_MODE_SERVER=0 fallback.
Search phrasings: server returned no safety verdict for the last 10 responses; claude code auto mode gateway no verdict; CLAUDE_CODE_AUTO_MODE_SERVER=0
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- Actions denied; after 10 consecutive no-verdict responses the turn/-p run stops with an execution error.
- Context
- Product: Claude Code Component: Auto mode server-side classifier review Operation: Auto mode through an LLM gateway/proxy or with server-side classifier Affected versions: >= v2.1.280 stops turn; earlier denied each action Environment: unknown Trigger: Server-side classifier returned no verdict, often because a gateway/proxy cuts or rewrites streaming responses.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- The server-side auto mode classifier gave no verdict
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [Claude Code] 'Auto mode is unavailable — the server returned no safety verdict for the last 10 responses'
Recommended action: Check gateway pass-through; or set CLAUDE_CODE_AUTO_MODE_SERVER=0 to use client-side classifier requests (honored on direct API from v2.1.281).
Option: Check gateway pass-through; or set CLAUDE_CODE_AUTO_MODE_SERVER=0 to use client-side classifier requests (honored on direct API from v2.1.281). [evidence: official_recommended_action]
Applies when: Auto mode through an LLM gateway/proxy or with server-side classifier
Steps:
1. Send another message to retry (counter resets)
2. Verify the LLM gateway passes streaming responses through unchanged
3. export CLAUDE_CODE_AUTO_MODE_SERVER=0 before starting claude
4. Or switch out of auto mode
Expected: The error no longer appears.
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- 6316fff7-c907-4402-b441-8b00b2cee2f5
- Proposed action
- Recommended action: Check gateway pass-through; or set CLAUDE_CODE_AUTO_MODE_SERVER=0 to use client-side classifier requests (honored on direct API from v2.1.281). Option: Check gateway pass-through; or set CLAUDE_CODE_AUTO_MODE_SERVER=0 to use client-side classifier requests (honored on direct API from v2.1.281). [evidence: official_recommended_action] Applies when: Auto mode through an LLM gateway/proxy or with server-side classifier Steps: 1. Send another message to retry (counter resets) 2. Verify the LLM gateway passes streaming responses through unchanged 3. export CLAUDE_CODE_AUTO_MODE_SERVER=0 before starting claude 4. Or switch out of auto mode Expected: The error no longer appears.
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.