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flightaware-mcp

by chrischall
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TypeScript
Remote

fa_get_airport_delays

Read-only

Fetch current airport delays for all affected airports or a single airport by code to check its disruption status.

Instructions

Get current airport delays — all delayed airports, or just one when id is given.

Input Schema

NameRequiredDescriptionDefault
idNoAirport code to scope to a single airport (omit for all delays)
viewNoResponse shape: "compact" (default) drops fields the response already carries elsewhere; "full" returns every field this server understands. compact strips image/avatar URLs from the response; "full" returns FlightAware's payload untouched. No field projection: this server has no verified record of which FlightAware fields matter, and inventing one would risk dropping a field a caller needs.
cursorNoPaging cursor: the cursor query parameter of a previous response's links.next (passing the whole links.next value also works)
max_pagesNoMax pages to fetch, 1-20 (AeroAPI default: 1). Capped at 20 since AeroAPI bills per page.

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.3.2
    • changedInput schema / properties / cursor / description
      Previous value: -"Opaque paging cursor from a previous response's links.next"New value: +"Paging cursor: the cursor query parameter of a previous response's links.next (passing the whole links.next value also works)"
  2. Changed1 schema field changedv1.0.0
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
  3. Changed1 schema field changedv0.5.2
    • addedInput schema / properties / view
      Added value: +{
+  "description": "Response shape: \"compact\" (default) drops fields the response already carries elsewhere; \"full\" returns every field this server understands. compact strips image/avatar URLs from the response; \"full\" returns FlightAware's payload untouched. No field projection: this server has no verified record of which FlightAware fields matter, and inventing one would risk dropping a field a caller needs.",
+  "enum": [
+    "compact",
+    "full"
+  ],
+  "type": "string"
+}
  4. Changed2 schema fields changedv0.3.2
    • changedInput schema / properties / max_pages / description
      Previous value: -"Max pages to fetch (AeroAPI default: 1)"New value: +"Max pages to fetch, 1-20 (AeroAPI default: 1). Capped at 20 since AeroAPI bills per page."
    • changedInput schema / properties / max_pages / maximum
      Previous value: -9007199254740991New value: +20
  5. First observedv0.1.0

TDQS

A3.6/5.0
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The readOnlyHint=true and openWorldHint=true annotations already establish this as a safe, live external read, so the description's burden is lower. It adds that results reflect 'current' delays, but says nothing about pagination behavior, freshness window, or the per-page billing note that only appears in the schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single sentence that front-loads the resource and then the scope switch. No filler, no restated name, no redundant field list.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

With no output schema, the agent must rely on the description plus the well-documented schema; the description covers scope and currency but is thin on what a delay record actually contains. All four parameters are fully covered by the schema, so nothing essential is missing for a call to succeed.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the regex pattern on `id`, the view enum explanation, the cursor semantics, and the 1-20 max_pages cap with billing rationale are all already documented. The description's 'just one when `id` is given' merely restates the schema, so the baseline 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Get current airport delays') plus the scope variants (all delayed airports vs. a single one via `id`). That is enough to distinguish it from flight-oriented siblings like fa_get_flight_route, though it never names an alternative tool explicitly.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It conveys the id/no-id branching, which tells an agent how to widen or narrow the query. But it gives no when-to-use guidance relative to siblings such as fa_get_airport_flights or fa_get_airport, so selection between delay data and other airport data is left to inference.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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