pypi / anthropic
anthropic
What changed in anthropic 0.87 to 1, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-18.
2 security13 new APIs and options1 behavior and defaults4 fixes and other
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npx @unstale/cli initanthropic 118 changes
New APIs and options 13
Adds between_tools to thinking types in model capabilities.
Adds the speed parameter to Messages.
Returns a Console organization's usage-tier spend cap as a read-only spend limit.
Adds usage.speed to Messages.
Set ANTHROPIC_OPEN_TELEMETRY=false to disable native OpenTelemetry support.
Managed Agents agents now support execution_identity.
Pass open_telemetry=False to the client to disable native OpenTelemetry support.
An endpoint is available to test telemetry destinations.
The Admin API now supports telemetry destinations.
Multiagent configuration was added to Managed Agents.
Thread status filtering was added to Managed Agents.
Workflows were added to Managed Agents.
Types were added for Chat and Cowork unified analytics metrics.
Behavior and default changes 1
The SDK uses a registered global tracer provider to create spans and exports them with the rest of your traces; requests also get trace context headers from the global propagator.
Fixes and other changes 4
Dropped streams close without waiting for the collector.
Unknown event types pass through the message stream helpers.
An event before message_start no longer raises "Unexpected event order".
Spend limit lists now include the organization_type_not_supported error.
anthropic 0.872 changes
Security 2
Claude SDK for Python has Insecure Default File Permissions in Local Filesystem Memory Tool
Claude SDK for Python: Memory Tool Path Validation Race Condition Allows Sandbox Escape