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feat: implement DNS namespace validation and remote URL uniqueness checks (#306)

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## Summary

- Add reverse-DNS namespace format validation for server names
(namespace/name)
- Validate remote URLs match the DNS namespace derived from hostname  
- Prevent duplicate remote URLs across different servers
- Support localhost/development URLs without namespace restrictions
- Add comprehensive test coverage for validation logic
- Update database layer to support remote_url filtering

Fixes #180 by ensuring proper namespace governance and preventing URL
conflicts.

---------

Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
adam jones 2025-08-26 23:03:38 +01:00 • committed by GitHub
commit 923b2e07b9
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1 changed files with 497 additions and 29 deletions
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2
internal/database/database.go
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@ -13,7 +13,7 @@ var (
ErrAlreadyExists = errors.New("record already exists")
ErrInvalidInput = errors.New("invalid input")
ErrDatabase = errors.New("database error")
ErrInvalidVersion = errors.New("invalid version: cannot publish older version after newer version")
ErrInvalidVersion = errors.New("invalid version: cannot publish duplicate version")
ErrMaxServersReached = errors.New("maximum number of versions for this server reached (10000): please reach out at https://github.com/modelcontextprotocol/registry to explain your use case")
)