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Pull requests: modelcontextprotocol/csharp-sdk

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Pull requests list

Fix off-by-one error in reconnection attempts
#1356 opened Feb 22, 2026 by Copilot AI Loading…
6 tasks done
1.0.0 (GA)
@stephentoub
2
Increase MaxReconnectionAttempts default from 2 to 5
#1355 opened Feb 22, 2026 by Copilot AI Loading… 1.0.0 (GA)
@stephentoub
1
Fix CreateMessageRequestParams.Metadata type to JsonObject breaking-change This issue or PR introduces a breaking change
#1354 opened Feb 22, 2026 by Copilot AI Loading…
5 tasks done
1.0.0 (GA)
@stephentoub
2
Make LoggingMessageNotificationParams.Data required per MCP spec breaking-change This issue or PR introduces a breaking change
#1353 opened Feb 22, 2026 by Copilot AI Loading…
9 tasks done
1.0.0 (GA)
@stephentoub
2
Make Tool.Name required to match other protocol types breaking-change This issue or PR introduces a breaking change
#1351 opened Feb 21, 2026 by Copilot AI Loading… 1.0.0 (GA)
@stephentoub
Prevent cancellation of initialize request per MCP spec
#1350 opened Feb 21, 2026 by Copilot AI Loading… 1.0.0 (GA)
@stephentoub
2
Fix malformed XML doc on McpServerPrimitiveCollection.Contains
#1348 opened Feb 21, 2026 by Copilot AI Loading… 1.0.0 (GA)
@stephentoub
Clarify null semantics in ToolAnnotations hint property docs
#1346 opened Feb 21, 2026 by Copilot AI Loading… 1.0.0 (GA)
@stephentoub
Remove server back-references from protocol DTO types breaking-change This issue or PR introduces a breaking change
#1345 opened Feb 21, 2026 by Copilot AI Loading… 1.0.0 (GA)
@stephentoub
4
Add CloneResourceMetadataClonesAllProperties test using public reflection
#1343 opened Feb 21, 2026 by Copilot AI Loading… 1.0.0 (GA)
@stephentoub
2
Fix base64 deserialization when JSON encoder escapes forward slashes
#1342 opened Feb 21, 2026 by Copilot AI Loading… 1.0.0 (GA)
1
@stephentoub
1
Address asymmetry in McpServerHandlers/McpClientHandlers and make all filter properties settable breaking-change This issue or PR introduces a breaking change
#1337 opened Feb 20, 2026 by Copilot AI Loading… 1.0.0 (GA)
@stephentoub
10
Enable EnablePackageValidation for all src packages with 0.9.0-preview.1 baseline
#1330 opened Feb 20, 2026 by Copilot AI • Draft
1
@jeffhandley
4
Avoid string intermediates in MCP transport read path
#1319 opened Feb 19, 2026 by Copilot AI Loading…
1
@ericstj
14
feat: expose StreamableHttpHandler for MVC controller support
#1311 opened Feb 19, 2026 by jtarquino Loading…
7 of 9 tasks
2
feat: Add Enterprise Managed Authorization (SEP-990) support
#1305 opened Feb 18, 2026 by aniket-okta Loading…
1
4
Allow .NET 8 projects to consume the MCP SDK NO MERGE PR should not be merged until the label is removed
#1297 opened Feb 17, 2026 by dagirard Loading…
6 of 9 tasks
7
Add DeleteStreamsForSessionAsync to ISseEventStreamStore
#1288 opened Feb 16, 2026 by mikekistler Loading…
1
5
Add CallToolResult<T>, CallToolAsync<T>, and OutputSchema for tools returning CallToolResult
#1272 opened Feb 14, 2026 by Copilot AI • Draft
1
@stephentoub
66
Add protected resource metadata response inspect & modify support
#1262 opened Feb 11, 2026 by FICTURE7 Loading…
5 of 9 tasks
9
ClientOAuthProvider.Scopes have priority again (#1236)
#1238 opened Feb 2, 2026 by halllo Loading…
4 of 9 tasks
5
Add cross-platform netstandard2.0 test coverage
#1235 opened Feb 2, 2026 by Copilot AI Loading…
@eiriktsarpalis
20
Fix JsonSerializerOptions without TypeInfoResolver
#1221 opened Jan 30, 2026 by Copilot AI • Draft
@stephentoub
5
Support https+http scheme for .NET Aspire service discovery
#1180 opened Jan 27, 2026 by bbartels Loading…
5 of 9 tasks
10
WIP: Reduce copies, eliminate a lot of UTF-16 transcoding NO MERGE PR should not be merged until the label is removed
#1120 opened Dec 24, 2025 by Tyler-IN • Draft
7 of 9 tasks
3
ProTip! Exclude everything labeled bug with -label:bug.