anthropics/anthropic-sdk-python

Stars: 3.9k
Forks: 857
Open beginner issues: 6
Indexed issues: 52
Avg merge: 1d 2h
Merged PRs (30d): 8

Dominant language: Python
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 13, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

Expose remaining prepaid credit balance (endpoint, error body, or low-balance webhook) Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

anthropics/anthropic-sdk-python#1942 · 2 comments · Opened Sep 20, 2026
streaming: a later `message_delta` that omits `stop_reason` resets it to `None` (`container` is guarded, the `stop_*` fields are not) Open

Difficulty 3/5 1-2 days Newbie friendliness 82/100

anthropics/anthropic-sdk-python#1940 · 1 comment · Opened Sep 18, 2026
Batch result decoders leave responses open after parsing or transport errors Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

anthropics/anthropic-sdk-python#1928 · Opened Sep 11, 2026
Sonnet 5 strict tool calls double-escape Unicode and introduce control characters into copied text Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

anthropics/anthropic-sdk-python#1926 · 2 reactions · Opened Sep 10, 2026
Sonnet 5 strict tool use returns a string for an array-typed property Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

anthropics/anthropic-sdk-python#1925 · 1 reaction · Opened Sep 10, 2026
Transport errors while consuming a stream escape as raw httpx exceptions instead of `APITimeoutError` / `APIConnectionError` Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

anthropics/anthropic-sdk-python#1919 · Opened Sep 7, 2026
Mid-stream `error` events still raise `APIStatusError` with `status_code=200` (#1258 closed without a fix) Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

anthropics/anthropic-sdk-python#1918 · Opened Sep 7, 2026
Three symlink tests in test_agent_toolset.py are missing the needs_symlinks marker Open

Difficulty 1/5 Under an hour Newbie friendliness 92/100

anthropics/anthropic-sdk-python#1915 · 3 comments · Opened Sep 6, 2026
beta_tool generates a type: array input_schema and an uncallable tool for positional-only parameters (and *args) Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

anthropics/anthropic-sdk-python#1911 · Opened Sep 4, 2026
Messages.parse (and AsyncMessages.parse) don't take cache_control? Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

anthropics/anthropic-sdk-python#1907 · Opened Sep 3, 2026
Asynchronous identity_token_provider to WorkloadIdentityCredentials Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

anthropics/anthropic-sdk-python#1901 · 3 comments · Opened Sep 1, 2026
Add an explicit authentication mode to AnthropicBedrockMantle Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

anthropics/anthropic-sdk-python#1893 · 3 comments · Opened Aug 28, 2026
Structured outputs (output_config.format/json_schema): mid-stream invalid_request_error triggered by quoted string content in the prompt, not the schema Open

Difficulty 5/5 Over a week Newbie friendliness 32/100

anthropics/anthropic-sdk-python#1889 · Opened Aug 26, 2026
`setup_skills` re-downloads and `rmtree`s skills on every session, racing when workers share a workdir Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

anthropics/anthropic-sdk-python#1871 · 3 comments · Opened Aug 22, 2026
Managed Agents self-hosted worker: download_session_skills skips roster agents' skills, so subagent threads run without them Open

Difficulty 3/5 1-2 days Newbie friendliness 76/100

anthropics/anthropic-sdk-python#1870 · 1 comment · Opened Aug 22, 2026
Windows: os.fchmod in credential write-back bricks the OAuth refresh token Open

Difficulty 2/5 1-3 hours Newbie friendliness 78/100

anthropics/anthropic-sdk-python#1868 · 1 comment · Opened Aug 21, 2026
BetaCompactionBlockParam.encrypted_content accepted by SDK types but rejected by the live API with "Extra inputs are not permitted" Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

anthropics/anthropic-sdk-python#1828 · 2 comments · Opened Aug 14, 2026
output_config.format cannot take the pydantic model that output_format deprecates, and the dict workaround silently skips transform_schema Open

Difficulty 4/5 3-5 days Newbie friendliness 58/100

anthropics/anthropic-sdk-python#1819 · Opened Aug 10, 2026
transform_schema empties a patternProperties map: field can only ever be {} Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

anthropics/anthropic-sdk-python#1817 · Opened Aug 10, 2026
Streaming accumulator crashes when message_start omits usage as shown in thinking docs Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

anthropics/anthropic-sdk-python#1806 · 4 comments · Opened Aug 6, 2026
Self-hosted environments: outcome grader's tool results rejected with 400, so grading never completes Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

anthropics/anthropic-sdk-python#1790 · 1 comment · Opened Jul 30, 2026
transform_schema raises AssertionError on valid list-form types, e.g. {"type": ["string", "null"]} Open

Difficulty 3/5 1-2 days Newbie friendliness 72/100

anthropics/anthropic-sdk-python#1764 · 2 comments · 2 reactions · Opened Jul 16, 2026
SessionToolRunner can re-execute a tool call after a stream reconnect if its result post failed Open

Difficulty 3/5 1-2 days Newbie friendliness 65/100

anthropics/anthropic-sdk-python#1749 · Opened Jul 11, 2026
[BUG] MCP connector: parallel mcp_tool_use calls stall ~300s per turn; one call per batch runs twice Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

anthropics/anthropic-sdk-python#1747 · 3 comments · Opened Jul 9, 2026
environments work poller: ack-before-yield makes any consumer failure permanently strand the work item — request deferred ack or a nack/fail API Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

anthropics/anthropic-sdk-python#1746 · Opened Jul 7, 2026
x-stainless-timeout header is NOT_GIVEN on default requests Open

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

anthropics/anthropic-sdk-python#1676 · 1 comment · Opened Jun 14, 2026
[Beta Sessions / Managed Agents] MCP tool-result image content blocks reach the model as base64 text instead of vision Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

anthropics/anthropic-sdk-python#1671 · 1 comment · Opened Jun 11, 2026
web_search_20260209 dynamic filtering: code execution fails with "AttributeError: 'str' object has no attribute 'get'" and returns empty results — need help understanding Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

anthropics/anthropic-sdk-python#1666 · Opened Jun 9, 2026
Managed Agents event stream doesn't surface model refusal stop_reason / stop_details Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

anthropics/anthropic-sdk-python#1664 · 1 comment · Opened Jun 8, 2026
Streaming response consumption validates full event union per event on the loop, even for get_final_message() Open

Difficulty 5/5 Over a week Newbie friendliness 38/100

anthropics/anthropic-sdk-python#1649 · 2 comments · Opened Jun 4, 2026
Bedrock stream decoder drops SSE event types; type-less chunks construct as RawMessageStartEvent(message=None) Open

Difficulty 3/5 1-2 days Newbie friendliness 68/100

anthropics/anthropic-sdk-python#1647 · 2 comments · Opened Jun 4, 2026
Batch API: tool_use input wrapped in $PARAMETER_NAME placeholder key (claude-opus-4-7) Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

anthropics/anthropic-sdk-python#1607 · 14 comments · Opened May 28, 2026
[Bug] API returns 400 'Invalid signature in thinking block' when replaying conversation history — no recovery path Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

anthropics/anthropic-sdk-python#1598 · 2 comments · Opened May 23, 2026
Official Rust SDK request — Where The Rust At? (follow-up to #747) Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

anthropics/anthropic-sdk-python#1559 · 1 comment · Opened May 17, 2026
[Bug] append_messages() inside tool runner loop causes infinite loop (advanced usage docs example) Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

anthropics/anthropic-sdk-python#1536 · 4 comments · Opened May 13, 2026
Accept a callable for bearer-token auth (`auth_token: str | Callable[[], str]`) Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

anthropics/anthropic-sdk-python#1496 · 3 comments · Opened May 5, 2026
Bedrock streaming SSE events errors are not handled gracefully Open

bedrock

Difficulty 3/5 1-2 days Newbie friendliness 58/100

anthropics/anthropic-sdk-python#1477 · Opened Apr 30, 2026
`BetaCitationPageLocation` contains `file_id` that cannot be roundtripped as a request Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

anthropics/anthropic-sdk-python#1450 · 2 comments · Opened Apr 26, 2026
Container File Mounting Open

Difficulty 3/5 1-2 days Newbie friendliness 55/100

anthropics/anthropic-sdk-python#1439 · 1 reaction · Opened Apr 24, 2026
API "Streaming is required" error message is outdated Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

anthropics/anthropic-sdk-python#1430 · 1 comment · Opened Apr 21, 2026
beta.skills.list hard-capped at 100 items with broken pagination (has_more always false, no cursor) Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

anthropics/anthropic-sdk-python#1391 · 1 comment · 2 reactions · Opened Apr 15, 2026
pdfplumber broken in code_execution sandbox — charset_normalizer mypyc module missing Open

api

Difficulty 4/5 3-5 days Newbie friendliness 42/100

anthropics/anthropic-sdk-python#1340 · 1 comment · Opened Apr 6, 2026
BetaAsyncAbstractMemoryTool docstring contains sync-only example (copy-paste from sync class) Open

sdk

Difficulty 1/5 1-3 hours Newbie friendliness 72/100

anthropics/anthropic-sdk-python#1290 · 2 comments · Opened Mar 25, 2026
Slow imports Open

sdk

Difficulty 4/5 3-5 days Newbie friendliness 35/100

anthropics/anthropic-sdk-python#1211 · 11 comments · Opened Feb 27, 2026
Use of `deepcopy_minimal` in `files.beta.upload` mutates dict in place Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

anthropics/anthropic-sdk-python#1202 · 7 comments · Opened Feb 24, 2026
Python SDK: _transform_recursive blocking event loop on large message payloads Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

anthropics/anthropic-sdk-python#1195 · 6 comments · Opened Feb 21, 2026
Token counting is not supported in Bedrock yet Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

anthropics/anthropic-sdk-python#1103 · 2 comments · Opened Dec 17, 2025
aws bedrock can not support skill? Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

anthropics/anthropic-sdk-python#1102 · 1 comment · Opened Dec 17, 2025
tools.0.web_search_20250305: Country code SG is not supported Open

api

Difficulty 4/5 3-5 days Newbie friendliness 28/100

anthropics/anthropic-sdk-python#995 · 3 comments · Opened Jul 17, 2025
Feature request: add OAuth-based authentication Open

sdk

Difficulty 5/5 Over a week Newbie friendliness 25/100

anthropics/anthropic-sdk-python#988 · 3 comments · Opened Jul 3, 2025

A short digest of beginner-friendly GitHub issues.