anthropics/claude-agent-sdk-python v0.1.51 on GitHub

Session management: Added fork_session(), delete_session(), and offset-based pagination for session listing (#744)
Task budget: Added task_budget option for token budget management (#747)
SystemPromptFile: Added support for --system-prompt-file CLI flag via SystemPromptFile (#591)
AgentDefinition fields: Added disallowedTools, maxTurns, and initialPrompt to AgentDefinition (#759)
Preserved fields: Preserve dropped fields on AssistantMessage and ResultMessage for forward compatibility (#718)

Python 3.10 compatibility: Use typing_extensions.TypedDict on Python 3.10 for NotRequired support (#761)
ResultMessage errors field: Added missing errors field to ResultMessage (#749)
Async generator cleanup: Resolved cross-task cancel scope RuntimeError on async generator cleanup (#746)
MCP tool input_schema: Convert TypedDict input_schema to proper JSON Schema in SDK MCP tools (#736)
initialize_timeout: Pass initialize_timeout from env var in query() (#743)
Async event loop blocking: Defer CLI discovery to connect() to avoid blocking async event loops (#722)
Permission mode: Added missing dontAsk permission mode to types (#719)
Environment filtering: Filter CLAUDECODE env var from subprocess environment (#732)
Process cleanup: Added SIGKILL fallback when SIGTERM handler blocks in close() (#729)
Duplicate warning: Removed duplicate version warning and included CLI path (#720)
MCP resource types: Handle resource_link and embedded resource content types in SDK MCP tools (#725)
Stdin timeout: Removed stdin timeout for hooks and SDK MCP servers (#731)
Stdout parsing: Skip non-JSON lines on CLI stdout to prevent buffer corruption (#723)
MCP error propagation: Propagate is_error flag from SDK MCP tool results (#717)
Install script: Retry install.sh fetch on 429 with pipefail + jitter (#708)

PyPI: https://pypi.org/project/claude-agent-sdk/0.1.51/

pip install claude-agent-sdk==0.1.51