SL – Stockholm public transport
io.github.Hashtagsmile/sl-mcpHashtagsmilestreamable-httpv0.2.0Scanned
Stockholm public transport (SL): live departures, trips to addresses with exits, disruptions.
4 tools: 1 do something that can't be undone and 3 only read.
- Reads private data · 1
- Reads text others write · 4
- Can send data out · 1
- 1 finding
Anlyon alternative
1 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →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.
4 tools
Can't be undone 1Claude Code: ask
plan_tripPlan trips by SL public transport between two stops or street addresses, leaving or arriving at a given time.Reads text others writeCan send data out1 finding
Why it is in this group
- The input addresses people (input.to): what it sends cannot be taken back.
- 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.
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Findings
- Warn
The server marks "plan_trip" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it Plan trips by SL public transport between two stops or street addresses, leaving or arriving at a given time. Returns up to 3 trips, plus walking all the way when that takes at most 30 min. Each ride lists line, direction, platform, stops, crowding and delay; each walk lists minutes and the station exit (uppgång). Use it for 'how do I get to X' and 'when must I leave'; for departures from one stop, use get_departures. Addresses are fuzzy matched, so the result starts with what each one matched. Times are Stockholm time. Unknown stops, the same stop twice and times outside the timetable give a clear error. SL cannot plan step-free trips: for a wheelchair or pram, use prefer 'least walking' and check get_disruptions for broken lifts at the stops.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
Only reads 3Show 3 read-only tools
find_stopFind Stockholm public transport (SL) stops by name and return their ids, names and transport modes.Reads text others writeNo findings
Why it is in this group
- The name "find_stop" says "find": 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 Stockholm public transport (SL) stops by name and return their ids, names and transport modes. Use it to get the siteId for get_departures, or a stop id for plan_trip. Not for street addresses: pass those to plan_trip as text instead. A name can match several stops ('Arlanda' gives the train station and bus stops): pick by name and modes, or ask the user. Typos are fine, abbreviations are not: write 'Tekniska högskolan', not 'KTH'. Returns one line per stop: '<id>: <town>, <name> (<modes>)'.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
get_departuresList live departures from one SL stop, soonest first: line, mode, final destination, direction (1 or 2), platform or bus stop letter, minutes or clock time, delay, cancellation and…Reads private dataReads text others writeNo findings
Why it is in this group
- The name "get_departures" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "list" and "note": it reads notes.
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it List live departures from one SL stop, soonest first: line, mode, final destination, direction (1 or 2), platform or bus stop letter, minutes or clock time, delay, cancellation and SL's notes. Use it for 'when does the next X leave from Y'. To get from A to B, use plan_trip; for announced track work or broken lifts, use get_disruptions. Real-time data from SL: at most 3 departures per line and direction, up to 3 hours ahead. `towards` matches the final destination only: for a station on the way (e.g. 'mot T-Centralen' from Slussen), leave it out and pick the direction from the results. An unknown siteId gives no departures, not an error.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
get_disruptionsList disruptions SL has announced: track work, closed entrances, broken lifts and replacement buses, with the lines affected and until when.Reads text others writeNo findings
Why it is in this group
- The name "get_disruptions" says "get": 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 List disruptions SL has announced: track work, closed entrances, broken lifts and replacement buses, with the lines affected and until when. Use it to check a line or the stops of a trip before travelling, e.g. lifts for a wheelchair. For live delays and cancelled departures, use get_departures instead. The text is in Swedish, so translate it if needed, and is cut at 800 characters. Results are cached for 1 minute, as SL asks. Leave both filters out to list everything.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
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.
4 paths in this server alone from private data, through text someone else wrote, to a way out. Denying 1 outbound tool breaks every one.
- Reads private data1
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write4
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out1
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
{
"permissions": {
"deny": [
"mcp__sl__plan_trip"
]
}
}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.
- Warnplan_trip
The server marks "plan_trip" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.
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.
Install
Pinned to version 0.2.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http sl https://sl-mcp.miltonlindblad.workers.dev/mcpclaude mcp add --transport http sl https://sl-mcp.miltonlindblad.workers.dev/mcpRun 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.
{
"permissions": {
"allow": [
"mcp__sl__find_stop",
"mcp__sl__get_departures",
"mcp__sl__get_disruptions"
],
"ask": [
"mcp__sl__plan_trip"
],
"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 sl. Review it before you use it.
Capability tags behind 4 rules
- mcp__sl__find_stop untrusted-input
- mcp__sl__get_departures private-data, untrusted-input
- mcp__sl__get_disruptions untrusted-input
- mcp__sl__plan_trip untrusted-input, outbound
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.Hashtagsmile/sl-mcp/verify?hash=013a58af40a0e8c833d2066e12f12976d6fa4b434d7e8471ba3de54ccde95168" | jq -e '.changed == false'Pinned hash 013a58af40a0, from Nov 3, 2026, 23:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/io.github.Hashtagsmile/sl-mcp/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/io.github.Hashtagsmile/sl-mcp)Source: MCP Registry · repository. Synced Nov 3, 2026, 23:17 UTC.