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How deep do MCP input schemas nest?

This story is from 2026-09-18. It is preserved in the archive; the latest stories are on the live feed.

A model filling in a tool call has to construct whatever shape your inputSchema describes. A flat object of strings is one thing; an array of objects each containing an object is another. So how nested are real MCP schemas? We measured depth across 74,666 tools that take parameters, following prope…

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  1. 2026-09-18 07:18 · DEV Community — AI
    How deep do MCP input schemas nest?

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