`delay_causes`

Pack: bts-ontime · Connect: https://pipeworx.io/mcp (see Connect below for a single-pack URL)

No MCP client? Call it directly: GET https://gateway.pipeworx.io/v1/tools/delay_causes for the schema, then POST the same URL with its arguments for the data.

Year-scoped delay-cause rows, optionally filtered by carrier and/or airport.

Tool description as the model sees it

Delay-cause rows for a given year, optionally scoped to one carrier and/or one (arrival) airport, from BTS TranStats on-time data. Same fields as bts_airport_delays (arriving flights, 15+ minute-late arrivals, cancellations, diversions, delay minutes by cause) but organized by year first rather than by airport first — use this to scan a whole year across carriers/airports, or to compare one carrier’s delay profile across the airports it serves. Rows beyond limit are reported via truncated/total_matching rather than silently dropped — narrow with carrier/airport or page with limit/offset to see the rest. Unknown carrier or airport codes are refused with a clear error, never an empty success.

Parameters

Name	Type	Required	Description
`year`	number	yes	Calendar year, e.g. 2026.
`carrier`	string	no	Optional: 2-letter carrier code (“AA”) or common name (“American”).
`airport`	string	no	Optional: arrival-airport code, e.g. “DFW”.
`limit`	number	no	Max rows to return, 1-200. Default 50. A truncated response carries truncated:true and total_matching.
`offset`	number	no	Pagination offset. Default 0.

Example call

Arguments

{
  "year": 2026
}

curl

curl -X POST https://gateway.pipeworx.io/bts-ontime/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"delay_causes","arguments":{"year":2026}}}'

TypeScript (@pipeworx/sdk)

import { Pipeworx } from '@pipeworx/sdk';
const pipeworx = new Pipeworx();

const result = await pipeworx.call('delay_causes', {
  "year": 2026
});

Connect

Add this to your MCP client config — every tool in the catalog, including this one — or use one-click install buttons:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://pipeworx.io/mcp"
    }
  }
}

Connect to just the bts-ontime pack

{
  "mcpServers": {
    "bts-ontime": {
      "url": "https://gateway.pipeworx.io/bts-ontime/mcp"
    }
  }
}

See Getting Started for client-specific install steps.

delay_causes