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io.github.mir-quadri/nj-transit-mcp

io.github.mir-quadri/nj-transit-mcpmir-quadristreamable-httpv1.3.0Scanned

NJ Transit rail, bus and PATH schedules via MCP (scheduled, plus live PATH)

6 tools: 4 change things and 2 only read.

Tools: 0 delete, 0 irreversible, 4 write, 2 read.
  • Reads private data · 0
  • Reads text others write · 6
  • Can send data out · 0
  • 2 findings

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4 of these tools change something. Run those as governed actions.

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Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

6 tools

Changes things 4Claude Code: ask
  • linesAll lines/routes.Reads text others writeNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    All lines/routes. NJ Transit: 17 rail + light-rail routes. NJ bus: 263 routes (short_name is the bus number; long names are empty in the bus feed, use trip headsigns for destinations). PATH: 4 daytime routes.

    Annotations the server declares

    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
    • readOnlyHint: true
    • title: List all routes
  • next_departuresNext departures from a station/stop (name or stop ID).Reads text others write1 finding

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.

    Findings

    • Info

      The description mentions "credentials".

      Matched text

      description: "...eduled by default, live delays when NJT credentials are configured. system 'nj_bus': NJ Tra..."

      What this check looks for
    Description, as the server wrote it
    Next departures from a station/stop (name or stop ID). system 'nj_transit': rail + light rail, scheduled by default, live delays when NJT credentials are configured. system 'nj_bus': NJ Transit bus, SCHEDULED only in v1.2 (BUSDATA live not enabled). system 'path': live PATH arrivals, no key needed. Times are America/New_York. NOTE: New Jersey Transit has no subway. For a subway-like ride use system='path', or NJ light rail lines HBLR / NLR / River Line.

    Annotations the server declares

    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
    • readOnlyHint: true
    • title: Next departures from a station
  • service_alertsService alerts.Reads text others write1 finding

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.

    Findings

    • Info

      The description mentions "credentials".

      Matched text

      description: "...e alerts. NJ Transit alerts require NJT credentials (see server_status for how to enable);..."

      What this check looks for
    Description, as the server wrote it
    Service alerts. NJ Transit alerts require NJT credentials (see server_status for how to enable); PATH has no separate alerts feed in v1, so PATH alerts are reported as unavailable, not invented.

    Annotations the server declares

    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
    • readOnlyHint: true
    • title: Service alerts
  • trip_betweenNext NJ Transit trains/buses from origin to destination on the SAME trip (no transfers).Reads text others writeNo findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Next NJ Transit trains/buses from origin to destination on the SAME trip (no transfers). Returns departure, arrival and duration. Times ET. system: 'nj_transit' (default, rail + light rail) or 'nj_bus' (bus, scheduled only in v1.2).

    Annotations the server declares

    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
    • readOnlyHint: true
    • title: Next same-trip trains or buses between two stations
Only reads 2Show 2 read-only tools
  • search_stationsFind stations/stops by name.Reads text others writeNo findings

    Why it is in this group

    • The name "search_stations" says "search": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Find stations/stops by name. system: 'nj_transit' (rail + light rail), 'nj_bus' (NJ Transit bus street stops), 'path', or 'all'. 'all' includes bus, so a first 'all' search downloads the 50 MB bus GTFS once; use system='nj_bus' for bus-only searches. Returns station/stop IDs to use with next_departures / trip_between.

    Annotations the server declares

    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
    • readOnlyHint: true
    • title: Find NJ Transit, bus, and PATH stations
  • server_statusWhat data this server is actually serving right now: GTFS date range and counts, whether live NJ data is enabled, PATH feed age.Reads text others writeNo findings

    Why it is in this group

    • The name "server_status" says "status": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    What data this server is actually serving right now: GTFS date range and counts, whether live NJ data is enabled, PATH feed age. Use this to answer 'is this live or scheduled?' honestly.

    Annotations the server declares

    • destructiveHint: false
    • idempotentHint: false
    • openWorldHint: true
    • readOnlyHint: true
    • title: Server status and data freshness

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write6
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out0
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

2 info

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.3.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http nj-transit https://nj-transit-mcp.vercel.app/mcp
claude mcp add --transport http nj-transit https://nj-transit-mcp.vercel.app/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__nj-transit__search_stations",
      "mcp__nj-transit__server_status"
    ],
    "ask": [
      "mcp__nj-transit__next_departures",
      "mcp__nj-transit__trip_between",
      "mcp__nj-transit__lines",
      "mcp__nj-transit__service_alerts"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as nj-transit. Review it before you use it.

Capability tags behind 6 rules
  • mcp__nj-transit__search_stations untrusted-input
  • mcp__nj-transit__next_departures untrusted-input
  • mcp__nj-transit__trip_between untrusted-input
  • mcp__nj-transit__lines untrusted-input
  • mcp__nj-transit__service_alerts untrusted-input
  • mcp__nj-transit__server_status untrusted-input

Pin

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.mir-quadri/nj-transit-mcp/verify?hash=d266d07db881c4559a81a838bc5c6704f399b9d39030b5cd47544ff38b73d3cd" | jq -e '.changed == false'

Pinned hash d266d07db881, from Nov 2, 2026, 02:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.mir-quadri/nj-transit-mcp/changes.xml

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Source: MCP Registry · repository. Synced Nov 2, 2026, 02:17 UTC.