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environments work poller: ack-before-yield makes any consumer failure permanently strand the work item — request deferred ack or a nack/fail API

Status: Open.

#1746 In anthropics/anthropic-sdk-python;

· arcaputo3 opened on Jul 7, 2026

Managed Agents: intermittent 400 "does not match any agent.tool_use event" confirming a tool_use on a non-primary session_thread_id

Status: Open.

#1744 In anthropics/anthropic-sdk-python;

· nadavshohat opened on Jul 7, 2026

CRITICAL BUG: Claude Code Fable model spawns unkillable zombie sub-agents (Infinite spawn loop causing system crash & quota drain)

Status: Open.

#1739 In anthropics/anthropic-sdk-python;

· bajzaa975 opened on Jul 6, 2026

AnthropicAWS.copy() rejects credentials=None, breaking the self-hosted environment poller/worker on Claude Platform on AWS

Status: Open.

#1736 In anthropics/anthropic-sdk-python;

· csantanapr opened on Jul 6, 2026

Design Pattern: Defensive Validation at API Consumption Boundaries

Status: Open.

#1732 In anthropics/anthropic-sdk-python;

· RG255 opened on Jul 3, 2026

Feature request: AnthropicDatabricks adapter (like AnthropicBedrock)

Status: Open.

#1724 In anthropics/anthropic-sdk-python;

· cuchaga opened on Jul 1, 2026

[BUG] PydanticSerializationUnexpectedValue warnings on every message_stop event when streaming

Status: Open.

#1715 In anthropics/anthropic-sdk-python;

· lizradway opened on Jun 29, 2026

ededededededede

Status: Open.

#1710 In anthropics/anthropic-sdk-python;

· hcbwhcbcg1c opened on Jun 25, 2026

[Bug]: Auth handshake returns fatal 403 "This organization has been disabled" on active paid Pro container

Status: Open.

#1700 In anthropics/anthropic-sdk-python;

· mrvirus5639-art opened on Jun 22, 2026

Configuring web_search/web_fetch in agent_toolset_20260401 breaks a co-declared mcp_toolset

Status: Open.

#1687 In anthropics/anthropic-sdk-python;

· jpsorensen-asimov opened on Jun 19, 2026

Feature: Official Claude Code MCP Server Implementation

Status: Open.

#1681 In anthropics/anthropic-sdk-python;

· abhinaykrupa opened on Jun 16, 2026

x-stainless-timeout header is NOT_GIVEN on default requests

Status: Open.

#1676 In anthropics/anthropic-sdk-python;

· KirtiRamchandani opened on Jun 14, 2026