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Japan Address & Geocoding
io.github.fujimura-ui/japan-address-geocoding-mcp in the official MCP registry.
Endpoint https://jusho-mcp.plus-synergy.workers.dev/mcp.
The registry describes it as: Japanese address search and geocoding (official address registry): postal codes and coordinates.
We could not reach this server's endpoint on 2026-10-21. Nothing was checked.
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[](https://lazaretto.dev/mcp-registry/io-github-fujimura-ui-japan-address-geocoding-mcp)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.
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