Features
- api: accept user_profile.program_status_updated on organization webhook endpoints
- api: add claude-fable-5-2 and claude-mythos-5-2
- api: add parent organization filtering and grouping to the usage and cost reports
- api: add the sandbox_egress_restricted error to Admin API write methods
- api: add the user_profile.program_status_updated webhook event
Bug Fixes
- bedrock,vertex: add the parse and count_tokens methods missing from beta.messages.with_raw_response and with_streaming_response
- bedrock,vertex: send the X-Stainless-Async header and stream raw requests that name no stream class
- bedrock: sign requests that have no Connection header instead of raising KeyError
- bedrock: write a list in a query as a[]=1&a[]=2 on the Bedrock Mantle clients, as Anthropic does
- client: allow API errors to be unpickled and copied
- client: read ANTHROPIC_CUSTOM_HEADERS on the Bedrock, Bedrock Mantle and Vertex clients
- foundry: stop copy, with_options and with_middleware from raising when ANTHROPIC_FOUNDRY_RESOURCE is set
- parse: keep const in structured output schemas, and drop type beside const and enum
Chores
- api: remove some error detail types and update descriptions
- docs: say when a work heartbeat does not compare its value
- internal: add this repository's review rules
- internal: remove two comments from the error classes