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## Background The Anthropic API supports passing metadata with requests, including a `user_id` field for tracking end-users. This feature was not previously supported in the AI SDK's Anthropic provider. ## Changes Added support for passing `metadata.userId` to Anthropic models across all providers (direct Anthropic, Amazon Bedrock, and Google Vertex). The `userId` field is mapped to the Anthropic API's `user_id` parameter and should contain an external identifier like a UUID or hash value without PII. ## Manual Verification Created and tested an example that demonstrates passing metadata with a user ID to the Anthropic provider. The metadata is correctly transformed from camelCase `userId` to snake_case `user_id` in the API request. ## Checklist - [x] Tests have been added / updated (for bug fixes / features) - [x] Documentation has been added / updated (for bug fixes / features) - [x] A _patch_ changeset for relevant packages has been added (for bug fixes / features - run `pnpm changeset` in the project root) - [x] I have reviewed this pull request (self-review)
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✅ Backport PR created: #13783 |
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Background
The Anthropic API supports passing metadata with requests, including a
user_idfield for tracking end-users. This feature was not previously supported in the AI SDK's Anthropic provider.Changes
Added support for passing
metadata.userIdto Anthropic models across all providers (direct Anthropic, Amazon Bedrock, and Google Vertex). TheuserIdfield is mapped to the Anthropic API'suser_idparameter and should contain an external identifier like a UUID or hash value without PII.Manual Verification
Created and tested an example that demonstrates passing metadata with a user ID to the Anthropic provider. The metadata is correctly transformed from camelCase
userIdto snake_caseuser_idin the API request.Checklist
pnpm changesetin the project root)