{"version":"2.1.284","anchor":"bedrockvertex-model-access-probe-results-are-cached-on-disk","canonical_anchor":"bedrockvertex-model-access-probe-results-are-cached-on-disk","heading":"Bedrock and Vertex model-access checks are cached on disk for 15 minutes","tier":"notice","area":"Cloud Providers","url":"https:\/\/changelogs.core-directive.com\/v\/2.1.284\/e\/bedrockvertex-model-access-probe-results-are-cached-on-disk","release_url":"https:\/\/changelogs.core-directive.com\/v\/2.1.284","markdown":"### Bedrock and Vertex model-access checks are cached on disk for 15 minutes\n\nA successful Bedrock or Vertex model-access check is now reused for 15 minutes, keyed on your region, endpoint and credentials\n\n**Unclear.** Only the Bedrock path was traced end to end, and the 15-minute window was not confirmed to belong to this cache.\n\n**What**\n\nWhen you use Claude through a cloud provider, Claude Code checks at launch whether your account can reach the model. A successful check is now saved in `~\/.claude\/cache\/provider-probe-verdicts.json` and reused for up to 15 minutes (900000 ms) on later launches. For Bedrock the log reads `[bedrock-probe] <model>: accessible (cached)`.\n\n- The saved result is keyed on a hash of the region, project, base URL, the skip-auth setting and the names of `ANTHROPIC_CUSTOM_HEADERS`.\n\n- For Bedrock the key also covers your AWS identity: `AWS_PROFILE`, `AWS_CONFIG_FILE`, `AWS_SHARED_CREDENTIALS_FILE`, `AWS_ACCESS_KEY_ID`, `AWS_ROLE_ARN`, the web-identity and container credential variables, and the `awsCredentialExport` and `awsAuthRefresh` settings.\n\n- The cache is skipped when short-lived or bearer credentials are in use, such as `AWS_BEARER_TOKEN_BEDROCK`, `CLOUDSDK_AUTH_ACCESS_TOKEN`, or `CLAUDE_CODE_SKIP_VERTEX_AUTH` together with `ANTHROPIC_API_KEY`, among others.\n\n**Why**\n\nBefore, every launch ran the check again, so startup on Bedrock or Vertex should be faster. Switching AWS profile, role or credentials changes the key, so a stale \"accessible\" result does not carry over.\n\n- Area: Cloud Providers\n- Tier: You'll notice\n- Useful: 2\/5\n- Signal: 1\/5"}