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MCP Server schema unmarshal fails #1

@lapwat

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@lapwat

Not sure if this is the right place to post this.

I am using:

  • Ollama as LLM
  • Beeper Desktop API as MCP Server
  • mcphost as MCP Client

The configuration of mcphost is:

mcpServers:
  beeper:
    type: remote
    url: http://localhost:23373/v0/mcp
    headers:
      - "Authorization: Bearer XXX"

When running mcphost, I get the following error:

mcphost -m ollama:gemma3

Failed to load MCP server 'beeper': conv mcp tool input schema fail(unmarshal): json: cannot unmarshal number into Go struct field SchemaBis.properties.exclusiveMinimum of type bool, tool name: search_messages

The search_messages tool cannot be loaded.

In the docs, exclusiveMinimum should be a number. I guess that the payload returned by Beeper MCP Server is a bool, and does not respect its JSON schema.

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