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SiteCheck Trade & Energy – Dry Van Capacity (US Freight Demand & Capacity Proxies)
x402
SiteCheck Trade & Energy – Dry Van Capacity (US Freight Demand & Capacity Proxies) is a paid API for AI agents from api.tradeenergy-api.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Returns monthly US truck freight demand and capacity proxy indicators from FRED — Cass Freight Index shipments and expenditures, implied freight cost per shipment, and ATA truck tonnage — with month-over-month and year-over-year changes.
Price / call$0.002
Success—
StatusUnknown
How this service works
US truck freight demand and capacity proxies from FRED (monthly): Cass Freight Index shipments and expenditures, the implied freight cost per shipment (expenditures / shipments), and ATA truck tonnage, each with month-over-month and year-over-year change. National, monthly data; it is not a lane-level tender rejection or load-board feed.
Output
A JSON object containing: latest index values for Cass Freight Index shipments, Cass Freight Index expenditures, implied freight cost per shipment (expenditures/shipments), and ATA truck tonnage — each with their most recent month value, month-over-month percent change, and year-over-year percent change. Also includes historical time series arrays for each indicator covering the requested number of months, a source attribution to FRED, a timestamp, and a plain-English interpretation of what the combined signals suggest about capacity conditions.
Example use cases
Freight market conditions briefing
“Give me a current read on US truck freight market conditions using the Cass Freight Index and ATA tonnage data — is capacity tight or loose right now, and how have shipments and freight costs moved month over month and year over year? Pull the last 6 months of history.”
Supply chain cost pressure monitoring
“I want to track freight cost trends for our supply chain planning — can you fetch the Cass Freight expenditures and implied cost per shipment for the past 12 months and tell me how much costs have increased year over year?”
Trucking sector investment research
“I'm analyzing the trucking sector for an investment thesis — pull me 24 months of ATA truck tonnage and Cass Freight shipment index data so I can see the longer-term demand and capacity cycle.”
Technical details
Endpoint
GEThttps://api.tradeenergy-api.workers.dev/api/logistics/dry-van-capacity?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need national-level, macro US truck freight demand and capacity proxy indicators derived from authoritative FRED/Cass/ATA sources, with historical trend context and MoM/YoY changes pre-calculated. Prefer this over load-board or tender-rejection feeds when you want official, cleaned monthly index data rather than real-time spot market signals. Not suitable for lane-level pricing, real-time load matching, or regional capacity analysis.
Side effects
- FRED data lag: ATA tonnage typically lags 1–2 months behind Cass data, so the latest months for different series may differ
- Invalid months parameter (outside 1–24 range) may return an error or default behavior
- Data may be temporarily unavailable if FRED upstream is down
- Monthly granularity only — no weekly, daily, or lane-level resolution
- National aggregate data only — cannot provide regional or corridor-level breakdowns
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"source": "https://fred.stlouisfed.org (Cass Information Systems; American Trucking Associations)",
"history": {
"cassShipments": [
{
"date": "2026-09",
"value": 1.062
},
{
"date": "2026-08",
"value": 1.038
}
],
"ataTruckTonnage": [
{
"date": "2026-07",
"value": 113.5
},
{
"date": "2026-06",
"value": 114.4
}
],
"cassExpenditures": [
{
"date": "2026-09",
"value": 3.97
},
{
"date": "2026-08",
"value": 3.722
}
],
"impliedCostPerShipment": [
{
"date": "2026-09",
"value": 3.7382
},
{
"date": "2026-08",
"value": 3.5857
}
]
},
"reading": "Falling shipments with rising cost per shipment usually means tightening truck capacity; the reverse means loose capacity.",
"checkedAt": "2026-10-23T09:37:59.260Z",
"cassShipmentsIndex": {
"month": "2026-09",
"value": 1.062,
"changeMoMPct": 2.31,
"changeYoYPct": 1.92
},
"ataTruckTonnageIndex": {
"month": "2026-07",
"value": 113.5,
"changeMoMPct": -0.79,
"changeYoYPct": -0.35
},
"cassExpendituresIndex": {
"month": "2026-09",
"value": 3.97,
"changeMoMPct": 6.66,
"changeYoYPct": 20.45
},
"impliedCostPerShipment": {
"month": "2026-09",
"value": 3.7382,
"changeMoMPct": 4.25,
"changeYoYPct": 18.18
}
}
}Tags
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