examples/hello-world-uv fails to pack #201

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1. marklemay

   added

   bugSomething isn't workingSomething isn't working

   on Mar 10, 2026
2. stickerdaniel commented on Mar 21, 2026

   

   stickerdaniel

   on Mar 21, 2026

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   Seeing the same issue with @anthropic-ai/mcpb@2.1.2.

   The docs say server.type = "uv" can omit server.mcp_config, but the published v0.4 schema/validator still requires it, so mcpb validate and mcpb pack fail with:

   server.mcp_config: Required
   

   Workaround for now is adding a redundant mcp_config block, looks like a docs/schema mismatch.
3. stickerdaniel commented on Mar 21, 2026

   

   stickerdaniel

   on Mar 21, 2026

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   #181 and #206
4. bryan-anthropic commented on Mar 25, 2026

   

   bryan-anthropic

   on Mar 25, 2026

   Collaborator

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   This is addressed in PR #206 which adds the required mcp_config block to the hello-world-uv example. As a workaround until that merges, you can add an mcp_config block to the manifest:

   "mcp_config": {
     "command": "uv",
     "args": ["run", "--directory", "${__dirname}", "src/server.py"]
   }

   The v0.4 schema requires mcp_config for all server types including UV. The example and docs were out of sync with the schema — PR #206 fixes both.
5. bryan-anthropic commented on Apr 13, 2026

   

   bryan-anthropic

   on Apr 13, 2026

   Collaborator

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   This is fixed — PR #206 merged on April 5, which adds the required mcp_config block to the hello-world-uv example. The updated example packs cleanly with mcpb pack. Thanks for reporting.
6. bryan-anthropic

   closed this as completedon Apr 13, 2026