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fa_list_operators

Read-only

Get paginated lists of airlines known to FlightAware AeroAPI, with optional compact or full responses and cursor-based paging.

Instructions

List operators (airlines) known to AeroAPI (paged). Use the cursor to page through.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
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.
cursorNoOpaque paging cursor from a previous response's links.next
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 changedv1.0.0
    • changedInput schema / $schema
      Previous value: -"http://json-schema.org/draft-07/schema#"New value: +"https://json-schema.org/draft/2020-12/schema"
  2. 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"
      +}
  3. 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
  4. First observedv0.1.0

TDQS

A4.2/5.0
Behavior4/5

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

Annotations already declare readOnlyHint and openWorldHint, so the description does not need to restate safety. It adds value by explicitly calling out paged behavior and instructing cursor-based navigation, which goes beyond what the annotations provide. No contradiction with annotations.

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?

Two short sentences front-load the core action and scope, followed by a single actionable paging instruction. There is no filler, redundancy, or unnecessary repetition of schema content.

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?

Given no output schema, the description still communicates the resource ('operators'), the domain scope ('AeroAPI'), and the paging mechanism. It could more explicitly describe the return shape as a paged collection, but 'List operators (paged)' plus the cursor instruction makes that reasonably inferable.

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?

The schema already documents all three parameters in detail, including the view variants, cursor origin, and max_pages billing cap. The description's cursor mention adds no semantic meaning beyond the schema, so it sits at the baseline.

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

Purpose5/5

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

The description states a specific action ('List'), a clear resource ('operators (airlines)'), and a scope ('known to AeroAPI'). It also signals that the operation is paged, which helps an agent distinguish it from single-operator tools like fa_get_operator.

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

Usage Guidelines4/5

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

It gives clear context: use this tool to enumerate airlines known to AeroAPI, with pagination handled via a cursor. However, it does not explicitly name alternatives or state when not to use this tool, so it stops short of a 5.

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