Full ARN of the AWS KMS key. On Claude Platform on AWS the key must be a single-Region key in your organization's own AWS account; cross-account keys, multi-Region keys, and alias ARNs are rejected.

maxLength2048

region: optional string or null

AWS region. Derived from kms_arn if omitted.

role_arn: optional string or null⁠Deprecated

IAM role ARN. Deprecated — Anthropic reaches the KMS key through its own intermediate role (or, on Claude Platform on AWS, with credentials AWS issues for the Workspace); this field is ignored.

AzureExternalKeyConfig object{ type: "azure", key_name, tenant_id, 2 more }

type: "azure"

key_name: string

Name of the key within the vault.

tenant_id: string

Azure AD tenant ID.

vault_uri: string

Key Vault data-plane URI — https://{vault-name}.vault.azure.net or https://{hsm-name}.managedhsm.azure.net.

client_id: optional string or null

Azure AD application (client) ID. Omit to use Anthropic's multitenant app. Provide only if using a single-tenant app registration in the customer's directory.

AzureExternalKeyConfigParam object{ type: "azure", key_name, tenant_id, 2 more }

Azure Key Vault provider configuration.

type: "azure"

key_name: string

Name of the key within the vault.

tenant_id: string

Azure AD tenant ID.

vault_uri: string

Key Vault data-plane URI — https://{vault-name}.vault.azure.net or https://{hsm-name}.managedhsm.azure.net.

client_id: optional string or null

Azure AD application (client) ID. Omit to use Anthropic's multitenant app. Provide only if using a single-tenant app registration in the customer's directory.

ExternalKey object{ type: "external_key", id, attachment, 5 more }

CMEK external key config belonging to the caller's organization.

Configs are organization-scoped. Workspaces attach to a config; once any workspace references it, the provider fields become effectively immutable (existing encrypted data needs the config for decrypt).

ExternalKeyAttachedAttachment object{ type: "attached" }

type: "attached"

defaultattached

ExternalKeyUnattachedAttachment object{ type: "unattached" }

type: "unattached"

defaultunattached

GCPExternalKeyConfig object{ type: "gcp", key_name }

type: "gcp"

key_name: string

Full resource name of the Cloud KMS key.

ExternalKeyDeleteResponse object{ type: "external_key_deleted", id }

type: "external_key_deleted"

defaultexternal_key_deleted

id: string

ID of the deleted External Key.

ExternalKeyValidateResponse object{ type: "external_key_validation", error, status }

Result of a validation roundtrip against the customer's KMS.

HTTP 200 for both outcomes — the operation completed; status says whether the key works.

type: "external_key_validation"

defaultexternal_key_validation

error: string or null

Error message when status is failure. Null otherwise.

status: "failure" or "success"

success — encrypt/decrypt roundtrip succeeded. failure — the roundtrip failed or timed out; see error.

One of the following:

"failure"

"success"