## Description
Fixes#15348
The Vercel AI SDK serializes tool schemas with a `jsonSchema` wrapper
(`{ jsonSchema: {...} }`), but the Model Context Protocol specification
expects the schema directly (`{ type: 'object', properties: {...} }`).
This was causing MCP clients like Claude Desktop to silently reject all
tool definitions as invalid, leaving users with no available tools.
## Changes
Modified `handleToolsListing()` in `mcp.service.ts` to unwrap the
`jsonSchema` key before returning tools to MCP clients.
## Before
```json
{
"name": "create_company",
"description": "...",
"inputSchema": {
"jsonSchema": {
"type": "object",
"properties": {...}
}
}
}
```
## After
```json
{
"name": "create_company",
"description": "...",
"inputSchema": {
"type": "object",
"properties": {...}
}
}
```
## Testing
Tested with:
- Direct curl request to verify schema format
- Claude Desktop client via mcp-proxy
- Verified tools now appear correctly in MCP clients
## References
- [MCP Tools
Specification](https://modelcontextprotocol.io/specification/2025-06-18/server/tools)
- Related discussion in #12953
Kenny Vaneetvelde
7f911913c7