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Nov 21, 2025
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Address additional feedback on Versioning doc #999

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8aac901
Address review feedback
jeffhandley Nov 20, 2025
ceb2fda
Shorten prefixes for experimental and obsoletion diagnostics
jeffhandley Nov 20, 2025
5862e7d
Fix (unrelated) broken links to the MCP spec
jeffhandley Nov 20, 2025
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -24,7 +24,7 @@ The Model Context Protocol (MCP) is an open protocol that standardizes how appli
For more information about MCP:

- [Official Documentation](https://modelcontextprotocol.io/)
- [Protocol Specification](https://spec.modelcontextprotocol.io/)
- [Protocol Specification](https://modelcontextprotocol.io/specification/)
- [GitHub Organization](https://github.com/modelcontextprotocol)

## Installation
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2 changes: 1 addition & 1 deletion docs/index.md
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Expand Up @@ -13,7 +13,7 @@ The Model Context Protocol (MCP) is an open protocol that standardizes how appli
For more information about MCP:

- [Official Documentation](https://modelcontextprotocol.io/)
- [Protocol Specification](https://spec.modelcontextprotocol.io/)
- [Protocol Specification](https://modelcontextprotocol.io/specification/)
- [GitHub Organization](https://github.com/modelcontextprotocol)

For how-to guides, tutorials, and additional guidance, refer to the [official MCP documentation](https://modelcontextprotocol.io/).
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18 changes: 9 additions & 9 deletions docs/versioning.md
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Expand Up @@ -20,22 +20,22 @@ Beginning with the 1.0.0 release, the following support policy will be applied f

1. New functionality and additive APIs will be introduced in MINOR releases within the current MAJOR version only
* New functionality will not be added to an earlier MAJOR version
2. Bugs will be fixed within either:
1. A new PATCH release against the latest MAJOR.MINOR version
2. A new MINOR release against the latest MAJOR version
3. Critical, blocking issues will be fixed against:
1. The latest MINOR version within _the current_ MAJOR version
2. The latest MINOR version within _one previous_ MAJOR version, until the latest MAJOR version has been published for 3 months
2. Bugs will be fixed in either:
1. A PATCH release against the latest MAJOR.MINOR version within _the latest_ MAJOR version only
2. A MINOR release against the latest MAJOR version within _the latest_ MAJOR version only
3. Bugs deemed by the maintainers to be critical or blocking will be fixed in both:
1. A PATCH release against _the latest_ MAJOR version, within its latest MAJOR.MINOR version
2. A PATCH release against _one previous_ MAJOR version, within its latest MAJOR.MINOR version

## Experimental APIs

MAJOR or MINOR version updates might introduce or alter APIs annotated as [`[Experimental]`](https://learn.microsoft.com/dotnet/api/system.diagnostics.codeanalysis.experimentalattribute). This attribute indicates that an API is experimental and it may change at any time--including within PATCH or MINOR version updates.

Experimental APIs require suppression of diagnostic codes specific to the MCP SDK APIs, using an `MCPEXP` prefix.
Experimental APIs require suppression of diagnostic codes specific to the MCP SDK APIs, using an `MCP` prefix.

## Breaking changes

Prior to the release of a stable 1.0.0 set of NuGet packages, the SDK remains in preview and breaking changes can be introduced without prior notice. All versions beginning with the stable 1.0.0 release will follow semantic versioning, and breaking changes will require increments to the MAJOR version.
Prior to the release of a stable 1.0.0 set of NuGet packages, the SDK remains in preview and breaking changes can be introduced without prior notice. Thereafter, the SDK follows Semantic Versioning and breaking changes against stable releases require increments to the MAJOR version.

If feasible, the SDK will support all versions of the MCP spec. However, if breaking changes to the spec make this infeasible, preference will be given to the most recent version of the MCP spec, and this would be considered a breaking change necessitating a new MAJOR version.

Expand All @@ -58,4 +58,4 @@ If APIs within the SDK become obsolete due to changes in the MCP spec or other e
2. Within a MAJOR version update, APIs may be marked as `[Obsolete]` to produce _build errors_ indicating the API is no longer functional and always throws exceptions. The build errors will provide guidance specific to the affected APIs.
3. Within a MAJOR version update, obsolete APIs may be removed. API removals are expected to be rare and avoided wherever possible, and `[Obsolete]` attributes will be applied ahead of the API removal.

Beginning with the 1.0.0 release, all obsoletions will use diagnostic codes specific to the MCP SDK APIs, using an `MCPOBS` prefix.
Beginning with the 1.0.0 release, all obsoletions will use diagnostic codes specific to the MCP SDK APIs, using an `MCP` prefix.
2 changes: 1 addition & 1 deletion samples/FileBasedMcpServer/README.md
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Expand Up @@ -61,4 +61,4 @@ echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":

- [File-Based Programs Tutorial](https://learn.microsoft.com/en-us/dotnet/csharp/fundamentals/tutorials/file-based-programs)
- [C# Preprocessor Directives for File-Based Apps](https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/preprocessor-directives#file-based-apps)
- [Model Context Protocol Specification](https://spec.modelcontextprotocol.io/)
- [Model Context Protocol Specification](https://modelcontextprotocol.io/specification/)
2 changes: 1 addition & 1 deletion src/ModelContextProtocol.AspNetCore/README.md
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Expand Up @@ -14,7 +14,7 @@ The Model Context Protocol (MCP) is an open protocol that standardizes how appli
For more information about MCP:

- [Official Documentation](https://modelcontextprotocol.io/)
- [Protocol Specification](https://spec.modelcontextprotocol.io/)
- [Protocol Specification](https://modelcontextprotocol.io/specification/)
- [GitHub Organization](https://github.com/modelcontextprotocol)

## Installation
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2 changes: 1 addition & 1 deletion src/ModelContextProtocol.Core/README.md
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Expand Up @@ -14,7 +14,7 @@ The Model Context Protocol (MCP) is an open protocol that standardizes how appli
For more information about MCP:

- [Official Documentation](https://modelcontextprotocol.io/)
- [Protocol Specification](https://spec.modelcontextprotocol.io/)
- [Protocol Specification](https://modelcontextprotocol.io/specification/)
- [GitHub Organization](https://github.com/modelcontextprotocol)

## Installation
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