Release notes from sentry-python

2.55.0

2026-03-17T14:18:39Z

New Features ✨

Anthropic

Record finish reasons in AI monitoring spans by @ericapisani in #5678
Emit gen_ai.chat spans for asynchronous messages.stream() by @alexander-alderman-webb in #5572
Emit AI Client Spans for synchronous messages.stream() by @alexander-alderman-webb in #5565
Set gen_ai.response.id span attribute by @ericapisani in #5662
Add gen_ai.system attribute to spans by @ericapisani in #5661

Pydantic Ai

Support ImageUrl content type in span instrumentation by @ericapisani in #5629
Add tool description to execute_tool spans by @ericapisani in #5596

Other

(crons) Add owner field to MonitorConfig by @julwhitney13 in #5610
(otlp) Add collector_url option to OTLPIntegration by @sl0thentr0py in #5603

Bug Fixes 🐛

(ai) Truncate list-based message content in AI monitoring by @ericapisani in #5631
(anthropic) Close span on GeneratorExit by @alexander-alderman-webb in #5643
(celery) Propagate user-set headers by @sentrivana in #5581
(langchain) Wrap finish_reason in array for gen_ai span attribute by @ericapisani in #5666
(logging) Fix deadlock in log batcher by @sentrivana in #5684
(profiler) Prevent buffer race condition during rapid start/stop cycles by @ericapisani in #5622
(utils) Avoid double serialization of strings in safe_serialize by @ericapisani in #5587
Enable unused import ruff check and fix unused imports by @sentrivana in #5652

Documentation 📚

(openai-agents) Remove inapplicable comment by @alexander-alderman-webb in #5495
Add AGENTS.md by @sentrivana in #5579
Add set_attribute example to changelog by @sentrivana in #5578

Internal Changes 🔧

Anthropic

Check system and response ID attributes on spans created by stream() by @alexander-alderman-webb in #5665
Skip accumulation logic for unexpected types in streamed response by @alexander-alderman-webb in #5564
Factor out streamed result handling by @alexander-alderman-webb in #5563
Stream valid JSON by @alexander-alderman-webb in #5641
Stop mocking response iterator by @alexander-alderman-webb in #5573

Openai Agents

Do not fail on new tool fields by @alexander-alderman-webb in #5625
Stop expecting a specific function name by @alexander-alderman-webb in #5623
Set streaming header when library uses with_streaming_response() by @alexander-alderman-webb in #5583
Replace mocks with httpx for streamed responses by @alexander-alderman-webb in #5580
Replace mocks with httpx in non-MCP tool tests by @alexander-alderman-webb in #5602
Replace mocks with httpx in MCP tool tests by @alexander-alderman-webb in #5605
Replace mocks with httpx in handoff tests by @alexander-alderman-webb in #5604
Replace mocks with httpx in API error test by @alexander-alderman-webb in #5601
Replace mocks with httpx in non-error single-response tests by @alexander-alderman-webb in #5600
Remove test for unreachable state by @alexander-alderman-webb in #5584
Expect namespace tool field for new openai versions by @alexander-alderman-webb in #5599

Other

(graphene) Simplify span creation by @sentrivana in #5648
(httpx) Resolve type checking failures by @alexander-alderman-webb in #5626
(pyramid) Support alpha suffixes in version parsing by @alexander-alderman-webb in #5618
(rust) Don't implement separate scope management by @sentrivana in #5639
(strawberry) Simplify span creation by @sentrivana in #5647
🤖 Update test matrix with new releases (03/16) by @github-actions in #5671
Remove custom warden action by @sentrivana in #5653
Add httpx to linting requirements by @alexander-alderman-webb in #5644
Remove CodeQL action by @sentrivana in #5616
Normalize dots in package names in populate_tox.py by @alexander-alderman-webb in #5574
Do not run actions on potel-base by @sentrivana in #5614

2.52.0a8

2026-03-03T13:14:26Z

This is an alpha release for internal testing.

2.54.0

2026-03-03T08:59:05Z

New Features ✨

Add set_attribute, remove_attribute to global API by @sentrivana in #5555

You can now set and unset attributes on logs and metrics via top-level API. Think of it as sentry_sdk.set_tag() for attribute-based telemetry. Other event types (transactions, spans, errors) will be unaffected.

import sentry_sdk

sentry_sdk.init(...)

sentry_sdk.set_attribute("my.attribute", "my value")

# This metric will have "my.attribute" set
sentry_sdk.metrics.count("counter", 1)

# Remove the attribute
sentry_sdk.remove_attribute("my.attribute")

# This log will not have "my.attribute" set
sentry_sdk.logger.info("An info log")

Bug Fixes 🐛

Openai

Attach response model with streamed Completions API by @alexander-alderman-webb in #5557
Attach response model with streamed Responses API by @alexander-alderman-webb in #5554
Avoid consuming iterables passed to the Completions API by @alexander-alderman-webb in #5489
Avoid consuming iterables passed to the Embeddings API by @alexander-alderman-webb in #5491

Other

(anthropic) Fix token accounting by @shellmayr in #5490
(google-genai) Remove agent spans for simple requests by @alexander-alderman-webb in #5443
(grpc) Read method from handler_call_details for grpcio >= 1.76 compat by @yeung108 in #5521
(httpx) Correctly append baggage in async client by @sentrivana in #5530
(pydantic-ai) Adapt to missing ToolManager._call_tool by @sentrivana in #5522
(utils) Use HEROKU_BUILD_COMMIT env var for default release by @ericapisani in #5499
(wsgi) Do not wrap file responses when uWSGI offload-threads is enabled by @ericapisani in #5556

Documentation 📚

Add troubleshooting note for editable installs with uWSGI by @ericapisani in #5552
Add debugging advice by @alexander-alderman-webb in #5517
New integration guide by @alexander-alderman-webb in #5476

Internal Changes 🔧

Agents

Add security-review skill to agent configuration by @ericapisani in #5498
Add sentry skills to be used by warden in CI reviews by @ericapisani in #5485

Openai

Only handle streamed results when applicable by @alexander-alderman-webb in #5553
Extract input in API-specific functions by @alexander-alderman-webb in #5546
Separate output handling by @alexander-alderman-webb in #5543

Openai Agents

Remove set_data_normalized for primitive attributes by @alexander-alderman-webb in #5509
Expect new tool fields by @alexander-alderman-webb in #5471

Other

(ai) Add configuration for dotagents by @ericapisani in #5480
(anthropic) Remove set_data_normalized for primitive attributes by @alexander-alderman-webb in #5504
(github) Add warden configuration by @ericapisani in #5484
(pydantic-ai) Remove set_data_normalized for the gen_ai.response.model attribute by @alexander-alderman-webb in #5512
(repo) Add .serena to .gitignore by @ericapisani in #5464
Updated codecov.yml by @MathurAditya724 in #5571
🤖 Update test matrix with new releases (02/24) by @github-actions in #5524
🤖 Update test matrix with new releases (02/23) by @github-actions in #5503
🤖 Update test matrix with new releases (02/19) by @github-actions in #5483
🤖 Update test matrix with new releases (02/18) by @github-actions in #5475

2.52.0a7

2026-02-25T13:12:00Z

This is an alpha release for internal testing.

2.52.0a6

2026-02-23T10:09:23Z

This is an alpha release for internal testing.

2.53.0

2026-02-16T11:11:31Z

Bug Fixes 🐛

Openai Agents

Patch execute_final_output() functions following library refactor by @alexander-alderman-webb in #5453
Patch execute_handoffs() functions following library refactor by @alexander-alderman-webb in #5452
Patch run_single_turn_streamed() functions following library refactor by @alexander-alderman-webb in #5451
Patch run_single_turn() functions following library refactor by @alexander-alderman-webb in #5450
Patch models functions following library refactor by @alexander-alderman-webb in #5449
Patch tool functions following library refactor by @alexander-alderman-webb in #5445

Other

Close the connection we're reading driver_type from by @sentrivana in #5427

Documentation 📚

Document openai-agents control-flow by @alexander-alderman-webb in #5447

Internal Changes 🔧

Openai Agents

New tool field and library error log by @alexander-alderman-webb in #5454
Avoid calling SDK-internal functions by @alexander-alderman-webb in #5437

Other

Improve Craft config with title stripping and artifact filtering by @BYK in #5444
Use fixed clickhouse action, remove aws-sam-cli dependency by @sentrivana in #5457
Remove references to unsupported attribute types by @alexander-alderman-webb in #5425
Pin setuptools for linting and chalice tests by @alexander-alderman-webb in #5438

2.52.0a5

2026-02-12T09:58:03Z

Documentation 📚

Document openai-agents control-flow by @alexander-alderman-webb in #5447

Internal Changes 🔧

(ci) Improve Craft config with title stripping and artifact filtering by @BYK in #5444
(openai-agents) Avoid calling SDK-internal functions by @alexander-alderman-webb in #5437
Remove references to unsupported attribute types by @alexander-alderman-webb in #5425

Other

[do not merge] feat: Span streaming & new span API by @sentrivana in #5317

2.52.0a4

2026-02-10T11:22:53Z

[do not merge] feat: Span streaming & new span API by @sentrivana in #5317

2.52.0a3

2026-02-09T14:54:52Z

New Features ✨

feat(integration): add gen_ai.conversation.id if available by @constantinius in #5307

Bug Fixes 🐛

Mcp

fix(mcp): Nest MCP spans under HTTP transactions by @alexander-alderman-webb in #5292
fix(mcp): Handle all awaitable return types by @alexander-alderman-webb in #5415

Span Streaming

fix(span-streaming): Always preserialize attributes by @sentrivana in #5407
fix(span-streaming): Warn about thread usage if any batcher is active by @sentrivana in #5408

Other

fix(anthropic): Token reporting by @alexander-alderman-webb in #5403
fix(celery): Close the connection we're reading driver_type from by @sentrivana in #5427
fix(google-genai): Token reporting by @alexander-alderman-webb in #5404
fix(openai): Token reporting by @alexander-alderman-webb in #5406
fix(openai-agents): Inject propagation headers for HostedMCPTool when streaming by @alexander-alderman-webb in #5405
fix: Fix list attribute type by @sentrivana in #5417
fix: Adapt to new packaging in toxgen by @sentrivana in #5382

Internal Changes 🔧

Fastmcp

test(fastmcp): Wrap prompt in Message by @alexander-alderman-webb in #5411
test(fastmcp): Remove test_fastmcp_without_request_context() by @alexander-alderman-webb in #5412
test(fastmcp): Use AsyncClient for SSE by @alexander-alderman-webb in #5400
test(fastmcp): Use TestClient for Streamable HTTP by @alexander-alderman-webb in #5384
test(fastmcp): Simulate stdio transport with memory streams by @alexander-alderman-webb in #5333

Mcp

test(mcp): Use AsyncClient for SSE by @alexander-alderman-webb in #5396
test(mcp): Use TestClient for Streamable HTTP by @alexander-alderman-webb in #5383
test(mcp): Remove unused stdio helpers by @alexander-alderman-webb in #5409

Other

ci: Pin setuptools for linting and chalice tests by @alexander-alderman-webb in #5438
ci: Fix lint step by @sentrivana in #5418
ci: 🤖 Update test matrix with new releases (02/02) by @github-actions in #5413
ci: Update tox and pin packaging version for tox by @alexander-alderman-webb in #5381

Other

[do not merge] feat: Span streaming & new span API by @sentrivana in #5317
Update CHANGELOG.md by @alexander-alderman-webb in bcec5780
release: 2.52.0 by @alexander-alderman-webb in 3d2154ce
Revert "feat(ai): Add original input length meta attribute (#5375)" by @alexander-alderman-webb in #5419

2.52.0

2026-02-04T15:04:14Z

New Features ✨

Other

feat(integration): add gen_ai.conversation.id if available by @constantinius in #5307

Bug Fixes 🐛

Google Genai

fix(google-genai): Token reporting by @alexander-alderman-webb in #5404
fix(google-genai): deactivate google genai when langchain is used by @shellmayr in #5389

Mcp

fix(mcp): Nest MCP spans under HTTP transactions by @alexander-alderman-webb in #5292
fix(mcp): Handle all awaitable return types by @alexander-alderman-webb in #5415

Other

fix(anthropic): Token reporting by @alexander-alderman-webb in #5403
fix(arq): handle settings_cls passed as keyword argument by @nc9 in #5393
fix(dramatiq): cleanup isolated scope and transaction when message is skipped by @frankie567 in #5346
fix(openai): Token reporting by @alexander-alderman-webb in #5406
fix(openai-agents): Inject propagation headers for HostedMCPTool when streaming by @alexander-alderman-webb in #5405
fix: Fix list attribute type by @sentrivana in #5417
fix: Adapt to new packaging in toxgen by @sentrivana in #5382

Internal Changes 🔧

Fastmcp

test(fastmcp): Wrap prompt in Message by @alexander-alderman-webb in #5411
test(fastmcp): Remove test_fastmcp_without_request_context() by @alexander-alderman-webb in #5412
test(fastmcp): Use AsyncClient for SSE by @alexander-alderman-webb in #5400
test(fastmcp): Use TestClient for Streamable HTTP by @alexander-alderman-webb in #5384
test(fastmcp): Simulate stdio transport with memory streams by @alexander-alderman-webb in #5333

Mcp

test(mcp): Use AsyncClient for SSE by @alexander-alderman-webb in #5396
test(mcp): Use TestClient for Streamable HTTP by @alexander-alderman-webb in #5383
test(mcp): Remove unused stdio helpers by @alexander-alderman-webb in #5409
test(mcp): Simulate stdio transport with memory streams by @alexander-alderman-webb in #5329

Other

ci: Fix lint step by @sentrivana in #5418
ci: 🤖 Update test matrix with new releases (02/02) by @github-actions in #5413
ci: Update tox and pin packaging version for tox by @alexander-alderman-webb in #5381
ci: migration to the new codecov action by @MathurAditya724 in #5392

Other

Revert "feat(ai): Add original input length meta attribute (#5375)" by @alexander-alderman-webb in #5419