{"uid":"cap_tzFcRj5T4m7fTdVIc787x","slug":"automotive-towing-payload-calculator-e2ed07cd","name":"Automotive Towing Payload Calculator","description":"Towing check in pounds: payload left after people, cargo and tongue weight, tow rating and combined weight limits.","url":"https://automotive-calc.x402tookit.com/towing-payload?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["gvwr","curbWeight","trailerWeight","towRating"],"properties":{"gcwr":{"type":"number","description":"Gross combined weight rating, lb, to check the whole rig"},"gvwr":{"type":"number","description":"Vehicle gross vehicle weight rating, lb (door-jamb sticker)"},"towRating":{"type":"number","description":"Maximum trailer weight the vehicle is rated to tow, lb"},"curbWeight":{"type":"number","description":"Vehicle weight empty with fluids, lb"},"tonguePercent":{"type":"number","description":"Tongue weight as % of trailer weight, 5 to 30 (default 12; 10 to 15 for a bumper-pull trailer)"},"trailerWeight":{"type":"number","description":"Loaded trailer weight, lb"},"occupantsAndCargo":{"type":"number","description":"People plus cargo in the vehicle, lb (default 0)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"asOf":{"type":["null","string"]},"gcwrLb":{"type":["null","number"]},"issues":{"type":["array","null"]},"source":{"type":["null","string"]},"reasons":{"type":["array","null"],"items":{"type":"string"}},"summary":{"type":["null","string"]},"verdict":{"type":["null","string"]},"degraded":{"type":["boolean","null"]},"disclaimer":{"type":["null","string"]},"notChecked":{"type":["array","null"],"items":{"type":"string"}},"towRatingLb":{"type":["null","number"]},"payloadUsedLb":{"type":["null","number"]},"tongueWeightLb":{"type":["null","number"]},"gcwrRemainingLb":{"type":["null","number"]},"trailerWeightLb":{"type":["null","number"]},"combinedWeightLb":{"type":["null","number"]},"payloadCapacityLb":{"type":["null","number"]},"payloadRemainingLb":{"type":["null","number"]},"occupantsAndCargoLb":{"type":["null","number"]},"towRatingRemainingLb":{"type":["null","number"]},"trailerAsPercentOfTowRating":{"type":["null","number"]}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xfbASEuPRyo2eS036WIHz","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks whether a vehicle-trailer combination is safe by calculating payload remaining after occupants, cargo, and tongue weight against tow rating and combined weight limits.","exampleAgentPrompt":"Can you check if my F-150 can safely tow my camper — it has a GVWR of 7,000 lb, curb weight of 4,900 lb, tow rating of 11,000 lb, the loaded trailer weighs 8,500 lb, and there will be 400 lb of people and gear in the truck?","exampleUseCases":[{"title":"Weekend camper tow safety check","prompt":"I'm taking my truck camping this weekend — it has a GVWR of 7,200 lb, curb weight of 5,100 lb, and a tow rating of 9,900 lb. The loaded travel trailer is 7,800 lb. I'll have 350 lb of people and gear in the cab. Can you check if this setup is within my payload and tow limits?"},{"title":"Half-ton truck RV feasibility check","prompt":"I'm looking at buying a 10,500 lb fifth-wheel but I drive a half-ton with a 6,800 lb GVWR, 4,700 lb curb weight, and only an 8,500 lb tow rating. With two people and luggage adding about 450 lb, can my truck legally handle this trailer? Use a 20% tongue weight since it's a fifth-wheel."},{"title":"Pre-purchase tow rating compliance","prompt":"Before I buy this boat trailer I need to know if my SUV is rated for it — GVWR is 6,200 lb, curb weight 4,400 lb, tow rating 5,000 lb, GCWR 10,800 lb, and the loaded boat and trailer together are 4,200 lb. Two adults at 380 lb total will be in the vehicle. Is my payload and GCWR still in the clear?"}],"resultDescription":"Returns a structured verdict (pass/warn/fail) with calculated payload used, payload remaining, tongue weight in pounds, combined weight, GCWR remaining, trailer weight vs tow rating comparison, a human-readable summary, and a list of any issues or limit violations found.","failureModes":["Missing required parameters (gvwr, curbWeight, trailerWeight, towRating) returns a 400 error","Physically impossible inputs (e.g. curb weight greater than GVWR) may return degraded or flagged results","GCWR check skipped if gcwr parameter is not provided (noted in notChecked field)","Extreme or nonsensical weight values may produce unreliable results"],"whenToPreferThis":"Use this endpoint when you need a structured, multi-limit towing safety check that simultaneously evaluates payload capacity, tongue weight, tow rating, and optional GCWR in a single call. It is purpose-built for automotive towing scenarios and returns a clear pass/warn/fail verdict with itemized issues, making it ideal for agents answering 'can I tow this?' questions without requiring manual weight arithmetic.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:12:44.274Z","isFirstParty":false,"canonicalSlug":"automotive-towing-payload-calculator-e2ed07cd"}