v0.1.0-preview.12

This release adds client-side Streamable HTTP transport support, removes batching from StreamableHttpServerTransport, and introduces schema creation options for tools and prompts.

Breaking Changes

Refer to the C# SDK Versioning documentation for details on versioning and breaking change policies.

1. Removed batching support from StreamableHttpServerTransport #372
   • Server no longer accepts batched (JSON array) JSON-RPC requests on the Streamable HTTP transport

What's Changed

• Add SchemaCreateOptions in McpServerToolCreateOptions/McpServerPromptCreateOptions #354 by @1357310795
• Improve WeatherTools.GetAlerts description in sample #363 by @vladnega
• Add static resources to EverythingServer sample #361 by @mikekistler (co-authored by @halter73)
• Backfill trace injection test and migrate from request.params to request.params._meta #360 by @codefromthecrypt
• Add a McpClientTool.CallAsync helper #367 by @stephentoub
• Fix typo in McpSession.cs #371 by @stephentoub
• Update System and M.E.AI dependencies #374 by @stephentoub
• Add client-side Streamable HTTP transport support #356 by @halter73
• Remove batching support from StreamableHttpServerTransport #372 by @halter73

Repository Infrastructure Updates

• Bump version to v0.1.0-preview.12 by @halter73

Acknowledgements

• @1357310795 made their first contribution in #354
• @vladnega made their first contribution in #363
• @codefromthecrypt made their first contribution in #360
• @mikekistler made their first contribution in #361
• @mwiemer-microsoft submitted #370 (resolved by #371)
• @eiriktsarpalis @jeffhandley @lmolkova @samsp-msft reviewed pull requests

Full Changelog: v0.1.0-preview.11...v0.1.0-preview.12