Agents

OpenAI Agents SDK v0.19.0

Frontier Signal Newsroom

Editorial Desk

2026-07-27 · 4 min read

Primary source github.com ↗

Published July 27, 2026 · Category: AI Agents

Overview

Key Changes

This minor release does not introduce a breaking change. The minor version bump reflects a significant new OpenAI Responses feature area: Programmatic Tool Calling.

Highlights:

Added agents.tool.ProgrammaticToolCallingTool, which lets supported OpenAI Responses models generate JavaScript to coordinate eligible tools. It supports per-tool allowed_callers, structured function-tool outputs, and integration with Runner streaming, guardrails, approvals, sessions, and RunState. See Programmatic Tool Calling for setup and constraints.
Added the public agents.decorators module and the shorter @tool alias alongside the existing function and guardrail decorators. Function tools now also support async callable objects.
SDK configuration now consistently accepts either typed settings objects or dictionaries across agents, runs, models, sessions, sandboxes, and voice pipelines, with validation for unknown settings.
Hardened error and diagnostic logging across models, tools, MCP, Realtime, sessions, sandboxes, and tracing to avoid exposing raw sensitive payloads while preserving useful debugging context.
Improved AnyLLM, LiteLLM, and Chat Completions compatibility, preserved session history across model retries, and added retries for WebSocket overloads that occur before a response starts.
Added VercelCloudBucketMountStrategy. Mounted sessions exclude bucket contents from workspace persistence and intentionally do not support dynamic mount changes or session resume.

What's Changed

feat: add Programmatic Tool Calling support by @seratch in #3833
- fix: remove programmatic transcripts from handoff tool filtering by @seratch in #3879
- fix: encode structured programmatic tool errors as JSON by @seratch in #3932
feat: consistently accept typed objects and dictionaries for SDK configuration by @seratch in #3917
feat: add tool decorator alias by @seratch in #3920
feat(sandbox): add Vercel cloud mount strategy by @seratch in #3899
fix: retry pre-response WebSocket overload errors by @seratch in #3978
fix: harden sensitive runtime logging by @seratch in #3938
- fix: redact Realtime and RunState diagnostics by @seratch in #3948
- fix: stop leaking raw exceptions in model + tool error logs by @dimaosipa in #3910
fix: preserve callable function tool compatibility by @seratch in #3959
- fix: support async callable objects as function tools by @seratch in #3949
fix: partition nested handoffs history ownership by @seratch in #3823
- fix: summarize programmatic transcripts during nested handoffs by @seratch in #3878
fix: improve AnyLLM and LiteLLM provider compatibility by @seratch in #3930
fix: improve provider compatibility and preserve session history on retries by @seratch in #3931
fix: fail closed on invalid callable approval arguments by @seratch in #3867
fix: classify lazy skill read probes correctly by @seratch in #3893
fix: reuse the verbose stdout logging handler by @seratch in #3957
fix: recognize typed easy input messages in Chat Completions by @seratch in #3877
fix: include device nodes when parsing ls output by @TheSaiEaranti in #3951
fix: preserve *args/**kwargs docstring descriptions in tool schemas by @TheSaiEaranti in #3956
fix: compare inspect sentinels by identity in function_schema by @TheSaiEaranti in #3961
fix: parse ls output with SELinux security-context marker by @SHAI-Cheravgoyal in #3904
fix: preserve dot-prefixed skip paths in Modal tar workspace excludes by @SHAI-Cheravgoyal in #3905
fix: cleanup cancelled servers during MCP connect failure by @hsusul in #3919
fix: await async callable-object dynamic instructions by @hsusul in #3942
fix: await async callable-object callbacks by @seratch in #3944
fix: Blaxel's shell-quote interpolated FUSE mount options by @ioleksiuk in #3873
fix: escape multiline DOT names in visualization by @hsusul in #3898
fix: redact raw message payload from realtime agents' conversion-failure log by @ioleksiuk in #3907
fix: encode streamed float32 audio as PCM16 in voice handling by @FayezBast in #3916
fix: redact MCP tool-call and formatter errors from logs by @dimaosipa in #3918
fix: parse Google docstrings whose Args: follows a section body by @oldrobotdev in #3862
fix: pin and verify rclone sandbox installs by @seratch in #3911
fix: reject empty additionalProperties mappings in strict_schema by @hsusul in #3927
fix: send logprobs=True when top_logprobs is set when using LiteLLM by @dimaosipa in #3929
fix: surface content-filter refusals when buffering streamed tool calls in chat completions by @gunjanjaswal in #3897
fix: reject unsupported streamed STT audio dtypes by @seratch in #3950
fix: use last_agent property in pretty_print_run_result_streaming to avoid None crash by @AAliKKhan in #3965
fix: use last_agent property in RunResultStreaming._create_error_details by @AAliKKhan in #3967

Documentation & Other Changes

docs: document compact tracing hierarchy by @william-xue in #3839
docs: clarify sandbox support on Windows by @seratch in #3866
docs: remove unnecessary RunContextWrapper wrapping in tool enabling example by @AAliKKhan in #3869
docs: remove unused Runner import in tracing docs by @AAliKKhan in #3881
docs: fix runnable Python examples by @seratch in #3885
docs: fix missing imports in dynamic instructions example by @Syed-Umer-Ali in #3895
docs: fix conversation example imports by @william-xue in #3903
docs: fix API cross-reference targets by @william-xue in #3913
docs: improve sandbox example runtime validation by @seratch in #3880
docs: fix streamed audio API rendering by @william-xue in #3940
chore: add packaged live integration and provider regression coverage by @seratch in #3936
chore: update e2b versions by @matthewlouisbrockman in #3871
chore: update FastAPI test dependency by @seratch in #3974
chore: isolate unit tests from ambient proxy settings by @seratch in #3945
Release 0.19.0 by @github-actions[bot] in #3874

New Contributors

@oldrobotdev made their first contribution in #3862
@AAliKKhan made their first contribution in #3869
@matthewlouisbrockman made their first contribution in #3871
@Syed-Umer-Ali made their first contribution in #3895
@hsusul made their first contribution in #3898
@SHAI-Cheravgoyal made their first contribution in #3904
@dimaosipa made their first contribution in #3910
@FayezBast made their first contribution in #3916
@gunjanjaswal made their first contribution in #3897
@TheSaiEaranti made their first contribution in #3951

Full Changelog: v0.18.3...v0.19.0

Source

Originally published at github.com.

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OpenAI Agents SDK v0.19.0

Overview