Will my flight be delayed?
com.willmyflightbedelayed/flight-delayswillmyflightbedelayed.comstreamable-httpv1.0.0Scanned
Will a flight be delayed or cancelled? Forecasts by flight number or route, with each live page.
3 tools: 1 do something that can't be undone, 1 change things and 1 only read.
- Reads private data · 1
- Reads text others write · 0
- Can send data out · 1
- 1 finding
Anlyon alternative
2 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.
3 tools
Can't be undone 1Claude Code: ask
flights_betweenFlights from one airport or city to another, today and tomorrow, each with its delay forecast and its page on willmyflightbedelayed.com (up to 10, soonest first).Can 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
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Findings
- Warn
The server marks "flights_between" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
Description, as the server wrote it Flights from one airport or city to another, today and tomorrow, each with its delay forecast and its page on willmyflightbedelayed.com (up to 10, soonest first). Use it when the user knows the route but not the flight number. Give the user the links.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
Changes things 1Claude Code: ask
check_flightDelay and cancellation forecast for one flight number, today or tomorrow: a verdict word (No, Unlikely, Maybe, Probably, Very likely; Yes once it has happened), expected departure …No 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.
Description, as the server wrote it Delay and cancellation forecast for one flight number, today or tomorrow: a verdict word (No, Unlikely, Maybe, Probably, Very likely; Yes once it has happened), expected departure and arrival times, the main reasons and the chance it is cancelled. After departure it says how late it left and when it lands. The result includes the flight's page on willmyflightbedelayed.com: give the user that link, since the page updates as departure nears and shows the full reasons and the flight's 90-day record.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
Only reads 1Show 1 read-only tool
airline_statusHow an airline is running today: the share of its departures expected 15+ minutes late against a usual day, any disruption note, and its 90-day on-time record, with the airline's p…Reads private dataNo findings
Why it is in this group
- The name "airline_status" says "status": a word for reading.
What it can reach
- private-dataThe description's first sentence says "note": it reads notes.
Description, as the server wrote it How an airline is running today: the share of its departures expected 15+ minutes late against a usual day, any disruption note, and its 90-day on-time record, with the airline's page on willmyflightbedelayed.com.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
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 untrusted-input.
- Reads private data1
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- 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.
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.
- Warnflights_between
The server marks "flights_between" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; 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 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http flight-delays https://mcp.willmyflightbedelayed.com/mcpclaude mcp add --transport http flight-delays https://mcp.willmyflightbedelayed.com/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__flight-delays__airline_status"
],
"ask": [
"mcp__flight-delays__check_flight",
"mcp__flight-delays__flights_between"
],
"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 flight-delays. Review it before you use it.
Capability tags behind 2 rules
- mcp__flight-delays__flights_between outbound
- mcp__flight-delays__airline_status private-data
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/com.willmyflightbedelayed/flight-delays/verify?hash=db60513e9d5d28ba15ae1dde01af80dc0b4d9dbe4c341cc71bd1f944dd7b52f6" | jq -e '.changed == false'Pinned hash db60513e9d5d, from Nov 4, 2026, 09:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.willmyflightbedelayed/flight-delays/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.willmyflightbedelayed/flight-delays)Source: MCP Registry. Synced Nov 4, 2026, 09:17 UTC.