Prepared by Claude Code, iterated and reviewed by me.
## Summary
This PR releases the server.json schema version `2025-12-11`,
incorporating URL template variables for remote servers from #570.
### What's New
- **URL Template Variables for Remote Servers** - Remote servers can now
define configurable variables in URLs using `{curly_braces}` notation,
enabling multi-tenant deployments.
### Schema Version
- `2025-10-17` → `2025-12-11`
## Release Sequence
1. ~~**First: Merge static repo PR** -
https://github.com/modelcontextprotocol/static/pull/11 (publishes schema
to versioned URL)~~
2. **Then: Merge this PR** - Updates registry code to reference the new
schema version
## Changes in This PR
- [x] Update CHANGELOG.md with release notes
- [x] Update `CurrentSchemaVersion` in `pkg/model/constants.go`
- [x] Update schema example URL in `docs/reference/api/openapi.yaml`
- [x] Update schema URL in `pkg/api/v0/types.go`
- [x] Update all documentation examples to use new schema version
- [x] Regenerate `server.schema.json`
## Test Plan
- [x] `make check` passes (lint, schema validation, example validation)
- [x] Unit tests pass for validators and publisher commands
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
<!-- Provide a brief summary of your changes -->
## Motivation and Context
<!-- Why is this change needed? What problem does it solve? -->
This resolves
https://github.com/modelcontextprotocol/registry/issues/738. There are
two issues with the NuGet.org integration today:
1. Change the `registryBaseUrl` for NuGet to
`https://api.nuget.org/v3/index.json`. `https://api.nuget.org` is not
the entry point for our service and is not specific enough.
`https://api.nuget.org/v3/index.json` is the value that users put into
their tooling to connect to our public registry (it is installed by
default in .NET client tooling).
2. Use the service index API to get the URL pattern for package READMEs.
- This URL is not guaranteed to be stable. The service index URL
(`registryBaseUrl`) is, however.
Additionally, I polished up the error messages so various error modes
are clearer. When packages are published to NuGet.org, they take 2-5
minutes to become available due to validations we run.
Some possible states that are now handled and described more helpfully
are:
- Version exists, but the package has no README
- The ID exists, but the version does not
- The ID does not exist at all
There are only 3 authors (me, another MSFT person, and a community
member) explicitly setting the old value. The DB migration will fix the
issue. A future publish will fail with the validation error but the
error message is clear.
`registry type and base URL do not match: 'https://api.nuget.org' is not
valid for registry type 'nuget'. Expected:
https://api.nuget.org/v3/index.json`
## How Has This Been Tested?
<!-- Have you tested this in a real application? Which scenarios were
tested? -->
- Unit tests, new and existing
- Manual test locally
- Set old data in the DB, `docker compose up`, confirm the migration
updates the specific package
## Breaking Changes
Yes, but minimal impact expected, unless there is a dependency on the
specific `https://api.nuget.org` value downstream. I am not aware of any
such dependency, and the new value is more proper and specific.
## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [ ] Bug fix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [x] Breaking change (fix or feature that would cause existing
functionality to change)
- [x] Documentation update
## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [x] I have added appropriate error handling
- [x] I have added or updated documentation as needed
## Additional context
<!-- Add any other context, implementation notes, or design decisions
-->
For more information about the NuGet API see:
https://learn.microsoft.com/en-us/nuget/api/overview#service-index (I
wrote most of the docs).
Update all documentation to reference the stable `/v0.1/` API version
instead of the development `/v0/` version.
Didn't update internal references (e.g. in admin-only docs) as that
probably make sense to keep pointed at v0 as the "dev" option.
Authored by Claude Code, reviewed by me.
---------
Co-authored-by: Claude <noreply@anthropic.com>
This PR reorganizes and extends the existing documentation in
preparation for publishing on https://modelcontextprotocol.io/.
The current plan is for docs to remain in this repo, and be synced to
the `modelcontextprotocol/modelcontextprotocol` whenever necessary
(e.g., accompanying a release of the registry). I have included a script
in
https://github.com/modelcontextprotocol/modelcontextprotocol/pull/1725
(`bin/pull-registry-docs.sh`) that can be run manually to perform the
sync.
If we later decide to permanently move the docs to the
`modelcontextprotocol/modelcontextprotocol` repo, that also works.
This PR puts all https://modelcontextprotocol.io/ docs into
`docs/modelcontextprotocol-io/`. Docs outside that subdirectory, such as
`docs/administration/admin-operations.md`, are intended to be accessible
solely via this repo. One major exception is the
`docs/reference/server-json/` subdirectory, which will depend on the
resolution of
https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1649.
However, I think we could address that in a follow-up PR.
---------
Co-authored-by: Adam Jones <adamj+git@anthropic.com>
Co-authored-by: Claude <noreply@anthropic.com>
