[BUG] [v0.0.7] cortex-mcp-types Root accepts non-file URIs even though MCP 2024 roots must start with file://

[marvinayisi]

Project

cortex

Description

A Root with an https:// URI deserializes successfully, even though the 2024-11-05 MCP schema says root URIs must start with file://.

Error Message

ROOT_NON_FILE_PARSE=Ok(Root { uri: "https://example.com/project", name: Some("demo") })

Debug Logs

N/A

System Information

Cortex crate: cortex-mcp-types 0.0.7
Commit: 7954d02
Date: 2026-04-10
OS: macOS

Screenshots

https://github.com/marvinayisi/issue-images/blob/main/mcp-root-non-file-20260410-074112.png

Steps to Reproduce

1. Create a tiny Rust crate depending on cortex-mcp-types from this workspace.
2. Deserialize a Root value whose uri is https://example.com/project.
3. Print the parse result.

Expected Behavior

The invalid non-file root should be rejected.

Actual Behavior

Deserialization succeeds and produces a Root with an https:// URI.

Additional Context

• Authoritative spec: https://raw.githubusercontent.com/modelcontextprotocol/modelcontextprotocol/refs/heads/main/schema/2024-11-05/schema.ts
• Code path: /Users/odeili/Projects/platform/cortex/src/cortex-mcp-types/src/roots.rs
• Duplicate check on 2026-04-10:
• cortex-mcp-types Root non-file uri
• Root file:// cortex-mcp-types