[fork of] The official C# SDK for Model Context Protocol servers and clients, maintained by Microsoft
C# · active 2025-03-20 → 2026-08-07 (UTC)
Activity over time
Daily event counts in the loaded window
Line chart, 506 days from 2025-03-20 to 2026-08-07. Pushes: 1,057 total, peak 42 in a day. Pull requests: 640 total, peak 20 in a day. Issues: 554 total, peak 20 in a day. Comments: 2,375 total, peak 50 in a day. Stars: 1,938 total, peak 271 in a day.
- Pushes
- Pull requests
- Issues
- Comments
- Stars
Stars, PRs, issues and forks are under-captured in the later part of this window. GH Archive progressively stopped capturing non-push events during 2026 — −95% or worse by the end of the window. Every series here except Pushes fades for that reason, so a decline above reflects the archive, not this repository. Pushes stay reliable throughout, so read them, and the contributor counts derived from them, as the real signal. Data health has the measurements.
Top contributors
Pushes, PRs, issues, reviews and comments — stars and forks excluded, so this is contribution rather than popularity
| Contributor | Contributions | Pushes | PRs | Comments |
|---|---|---|---|---|
| stephentoub | 1.3K | 164 | 107 | 583 |
| Copilot | 1K | 331 | 224 | 250 |
| halter73 | 926 | 173 | 62 | 377 |
| eiriktsarpalis | 466 | 44 | 25 | 209 |
| jeffhandley | 290 | 52 | 60 | 72 |
| MackinnonBuck | 197 | 56 | 8 | 64 |
| mikekistler | 182 | 50 | 13 | 61 |
| localden | 171 | 142 | 3 | 16 |
| PederHP | 93 | 0 | 4 | 57 |
| ericstj | 85 | 10 | 2 | 43 |
| dependabot[bot] | 78 | 8 | 50 | 20 |
| aaronpowell | 63 | 0 | 5 | 38 |
| jozkee | 47 | 1 | 1 | 24 |
| mehrandvd | 40 | 0 | 3 | 22 |
| DavidParks8 | 32 | 0 | 1 | 21 |
| tarekgh | 22 | 15 | 0 | 3 |
| stvansolano | 20 | 0 | 1 | 11 |
| lmolkova | 18 | 0 | 1 | 9 |
| halllo | 17 | 0 | 3 | 12 |
| IvanMurzak | 17 | 0 | 1 | 9 |
Recent activity
Latest issues, pull requests and releases
- Issue#1799philipthomas-tecman2026-08-07 16:02server/discover fallback fails when 400 body isn't JSON-RPC shaped (non-JSON-RPC error envelope)
- Issue comment#147jeffhandley2026-07-20 10:24Add client sample w/ guidance on wiring up dependency injection
- Issue#1526jeffhandley2026-07-18 23:15`AutoDetect` transport hides the real error: surfaces 405 to the user when the server actually returned 415
- Pull request#1686eiriktsarpalis2026-07-01 16:20
- Issue#1595jeffhandley2026-06-26 05:43Token/metadata caches in auth providers are not thread-safe
- Issue#1446jeffhandley2026-06-26 05:43[Auth] OAuth proxy / DCR facade for non-DCR providers (e.g. Entra ID + Claude Code)
- Issue#893jeffhandley2026-06-26 05:43Expose OAuth metadata, pass token to API without validation
- Issue#1657halter732026-06-17 03:26Renumber draft error codes to follow spec PR #2907 (-32020/-32021/-32022)
- Issue comment#1640Izelude2026-06-14 09:33`double` type never captured in generated schemas
- Pull request#1647halter732026-06-12 01:51
- Issue#1643PranavSenthilnathan2026-06-11 23:57Consistently use `TimeToLive` instead of TTL in public APIs
- Issue#1643PranavSenthilnathan2026-06-11 23:57Consistently use `TimeToLive` instead of TTL in public APIs
- Issue#1643PranavSenthilnathan2026-06-11 23:57Consistently use `TimeToLive` instead of TTL in public APIs
- Issue comment#1638KirillOsenkov2026-06-10 01:37Unable to connect to MCP servers from netfx UI apps (e.g. WPF)
- Issue#1552mikekistler2026-06-10 01:18SEP-2200: Clarify tool result content visibility
- Issue comment#1235Copilot2026-06-06 00:44Add cross-platform netstandard2.0 test coverage
- Pull request#1519joelmforsyth2026-06-06 00:14
- Pull request#1498halter732026-06-05 23:33
- Issue comment#1600halter732026-06-05 23:17Require Tool inputSchema during deserialization
- Pull request#1622jeffhandley2026-06-03 23:01
- Issue comment#1613jayaraman-venkatesan2026-05-29 22:08Add `application_type` to the Dynamic Client Registration request
- Issue comment#1305aniket-okta2026-05-25 04:49feat: Add Enterprise Managed Authorization (SEP-990) support
- Issue comment#1581halter732026-05-19 22:46Respect configured OAuth scopes
- Issue comment#1568jayaraman-venkatesan2026-05-16 05:18Relax outputSchema to any JSON Schema 2020-12 document per SEP-2106
- Issue#1573mikekistler2026-05-16 00:42SEP-2663: Tasks Extension
Totals cover only the window loaded into ClickHouse and count events, not GitHub's lifetime totals — 1,938 stars here means stars gained during the window, not the repo's star count.