What this error means

API Error: Claude Code is unable to respond to this request, which appears to violate our Usage Policy — cyber-related safeguards block routine sysadmin commands and poison entire session is a Claude Code failure pattern reported for developers trying to fix false-positive cybersecurity filter blocking legitimate sysadmin/security-audit work on owned infrastructure; fix session context poisoning that persists across follow-up messages. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Issue #61185 open 2026-05-21, 5 comments. Claude Code Pro user reports three related bugs: SUID enumeration command blocked, subsequent non-security messages also blocked (context poisoning), and Write() tool calls blocked when document mentions security terminology. All while running as root on owned Proxmox node. Commercial value: very high — Pro subscribers lose productive work sessions. Category: AI Coding Tools matches Claude Code per category rules.

Common causes

  • Issue #61185 open 2026-05-21, 5 comments. Claude Code Pro user reports three related bugs: SUID enumeration command blocked, subsequent non-security messages also blocked (context poisoning), and Write() tool calls blocked when document mentions security terminology. All while running as root on owned Proxmox node. Commercial value: very high — Pro subscribers lose productive work sessions. Category: AI Coding Tools matches Claude Code per category rules.

Quick fixes

  1. Confirm the exact error signature matches API Error: Claude Code is unable to respond to this request, which appears to violate our Usage Policy — cyber-related safeguards block routine sysadmin commands and poison entire session.
  2. Check the Claude Code account, local tool state, and provider configuration involved in the failing workflow.
  3. Compare the failing environment with a known working setup, then change one configuration value at a time.

Platform/tool-specific checks

  • Verify the command, editor, extension, or API client that produced the error.
  • Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
  • Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

  1. Capture the exact error message and the command, editor action, or request that triggered it.
  2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
  3. Review the source evidence below and compare it with your environment.
  4. Apply one change at a time and rerun the smallest failing action.
  5. Keep the working fix documented for the team or deployment environment.

How to prevent it

  • Keep provider/tool configuration documented.
  • Record non-secret diagnostics such as tool version, provider name, model name, and command path.
  • Add a lightweight check before CI or production workflows depend on the tool.