What's Changed

• Add ChatTools and ResponseTools helper classes by @christothes in #422
• Add string batchId overloads to CreateBatchOperation.Rehydrate methods by @KrzysztofCwalina in #464
• #348 optimise dependencies by @thompson-tomo in #443
• Fixed some code formatting in the Structured Output section of README by @gromer in #359
• Fix call id argument validation by @stephentoub in #429
• Add CONTRIBUTING.md by @joseharriaga in #468
• Add instructions for using a custom base URL and API key in README.md by @Petermarcu in #467
• Return shared ArrayPool by @shargon in #459
• Fix bool types by @shargon in #437
• Updating issue templates and configuration by @jsquire in #477
• Improve disposal logic in AsyncWebsocketMessageResultEnumerator to prevent multiple disposals by @christothes in #476
• [Wofkflow] Add "needs-triage" to new issues by @jsquire in #481
• Added override of ChatMessageContent.ToString by @KrzysztofCwalina in #485
• initial samples by @KrzysztofCwalina in #489
• Fix .NET 10 property directive format in sample files by @achandmsft in #497
• mcp usage sample by @KrzysztofCwalina in #490
• Prepare 2.2.0 release (Part 1) by @joseharriaga in #502
• Prepare 2.2.0 release (Part 2) by @joseharriaga in #503
• Prepare release 2.2.0 (Part 3) by @joseharriaga in #504

New Contributors

• @christothes made their first contribution in #422
• @thompson-tomo made their first contribution in #443
• @Petermarcu made their first contribution in #467
• @shargon made their first contribution in #459
• @jsquire made their first contribution in #477
• @achandmsft made their first contribution in #497

Full Changelog: OpenAI_2.2.0-beta.4...OpenAI_2.2.0