[Bug] Artifact tool unavailable or not responding

Artifact tool unavailable in Claude Code CLI sessions (org-wide, Team plan)

Summary

The Artifact tool is unavailable in Claude Code CLI sessions across our organization,
despite all documented requirements (Availability)
being met. Artifact publishing from Claude Code previously worked for us and stopped
around 16 July 2026 for at least two users simultaneously, on different CLI versions,
which suggests a server-side entitlement/propagation issue rather than local misconfiguration.

Symptom progression

• 16 July 2026: the tool was present in sessions but calling it returned:

Artifact exists but is not enabled in this context.

• 23 July 2026: the Artifact tool is entirely absent from the session's tool

registry (not listed, not discoverable via deferred-tool search).

Requirements verified

| Requirement | Status |
| --- | --- |
| Plan | Team. Admin confirmed Artifacts enabled under claude.ai admin Settings > Claude Code > Capabilities; toggled off/on (now "set by admin") to force entitlement re-propagation. No change after CLI restart. |
| Org capability works | Artifacts work normally from claude.ai web conversations for the same org. |
| CLI version | 2.1.218 (minimum 2.1.183). Also reproduced on 2.1.207 and 2.1.211 by a second user on 16 July. |
| Auth | Signed in via /login with a claude.ai Team account; no ANTHROPIC_API_KEY, gateway token, or Bedrock/Vertex configuration present. |
| Model provider | Anthropic API (model claude-fable-5). |
| Local settings | No disableArtifact in user/project/local settings; no Artifact in permissions.deny; CLAUDE_CODE_DISABLE_ARTIFACT and CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC unset. |
| Org policy | Not Enterprise, so RBAC role scoping does not apply; ZDR/CMEK/HIPAA are not enabled (not available on Team). |

Expected vs actual

• Expected: the Artifact tool is available and can publish to claude.ai.
• Actual: the tool is absent from CLI sessions org-wide since ~16 July 2026.

Reproduction

Start any Claude Code CLI session under our Team org and ask Claude to publish an
artifact; Claude reports the tool is unavailable and falls back to writing a local
HTML file.

Related

• Prior feedback ID: f5d39082-a753-4d81-b09e-55c13110b26b