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Hiroki Nomura

Building Forecall: it scores MCP tool descriptions and tests them on real models, so AI agents pick the right tool. I write about what public MCP servers get wrong, with data.

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Director & CTO at MIRAI STUDIO, INC.

Recording what the Firestore emulator sends to Cloud Functions, and replaying it in Rust

Recording what the Firestore emulator sends to Cloud Functions, and replaying it in Rust

Comments
6 min read

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I scored the tool descriptions of Chrome DevTools MCP and Playwright MCP. Both rarely say when to use a tool

I scored the tool descriptions of Chrome DevTools MCP and Playwright MCP. Both rarely say when to use a tool

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Comments 2
7 min read
hidane 0.1.0: a Firestore emulator without Java, tested against the official one

hidane 0.1.0: a Firestore emulator without Java, tested against the official one

Comments 4
6 min read
I open-sourced a linter for MCP tool descriptions

I open-sourced a linter for MCP tool descriptions

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3 min read
We checked 46 popular MCP servers on Smithery: 7 in 10 tools never say when to use them

We checked 46 popular MCP servers on Smithery: 7 in 10 tools never say when to use them

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Comments 14
4 min read
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