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io.github.cyanheads/wsdot-mcp-server

io.github.cyanheads/wsdot-mcp-server in the official MCP registry. Endpoint https://wsdot.caseyjhand.com/mcp. Source: github.com/cyanheads/wsdot-mcp-server.

The registry describes it as: WA highway conditions, ferry schedules, vessel locations, toll rates, and border waits via MCP.

We read its 12 tools on 2026-10-29. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.

A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.

Connect it

The endpoint answers MCP over HTTP; that is how we read it. Add it to your client:

Claude Code

claude mcp add --transport http wsdot-mcp-server https://wsdot.caseyjhand.com/mcp

Cursor: ~/.cursor/mcp.json

{
  "mcpServers": {
    "wsdot-mcp-server": {
      "url": "https://wsdot.caseyjhand.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"wsdot-mcp-server","type":"http","url":"https://wsdot.caseyjhand.com/mcp"}'

Some servers ask you to sign in the first time a client connects, or want a key from the people who run them; the server's own docs say which. The free lazaretto-guard plugin reads a server's tools the moment Claude Code adds it and asks you if one of our rules matches.

Tools it advertises

wsdot_get_mountain_passes wsdot_search_alerts wsdot_get_travel_times wsdot_get_toll_rates wsdot_get_border_waits wsdot_search_cameras wsdot_get_ferry_terminals wsdot_get_ferry_routes wsdot_get_ferry_schedule wsdot_get_vessel_locations wsdot_get_terminal_space wsdot_get_ferry_alerts

Run this server? Show the check in your README

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Markdown

[![MCP tool check](https://lazaretto.dev/mcp-registry/io-github-cyanheads-wsdot-mcp-server/badge.svg)](https://lazaretto.dev/mcp-registry/io-github-cyanheads-wsdot-mcp-server)

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.