{"demo":true,"note":"Free fixed-input sample of real output. The paid route accepts your own input: /api/grocery/ingredient ($0.005 per call via x402: USDC on Base, USDC on Solana, RLUSD on the XRP Ledger or USDC on Polygon; no signup or API key).","paid_endpoint":"https://horizonpulse.dev/api/grocery/ingredient","price":"$0.005","fixed_input":"q=all-purpose flour, n=2 (fixed; USDA snapshot only, no Open Food Facts read, no outbound calls)","sample_status":200,"sample":{"source":"grocery-ingredient","priced":{"amountUsd":"$0.005","amountAtomic":"5000","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","network":"base","payTo":"0x5b32c973596078a967562ca652761404f19be0e9"},"asOf":"2026-10-16T17:23:20.151Z","ok":true,"items":[{"query":{"q":"all-purpose flour"},"matches":[{"source":"usda_fdc","id":"790018","fdcId":790018,"name":"Flour, wheat, all-purpose, unenriched, unbleached","dataType":"Foundation","category":"Cereal Grains and Pasta","nutrientsPer100g":{"energy_kcal":362,"protein_g":12,"fat_g":1.7,"sat_fat_g":null,"carbs_g":74.6,"sugars_g":null,"fiber_g":3,"sodium_mg":2},"sourceUrl":"https://fdc.nal.usda.gov","license":"Public domain (CC0 1.0)","attribution":"Source: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, Foundation Foods, April 2026. fdc.nal.usda.gov. Public domain (CC0 1.0).","matchScore":12.36},{"source":"usda_fdc","id":"789890","fdcId":789890,"name":"Flour, wheat, all-purpose, enriched, bleached","dataType":"Foundation","category":"Cereal Grains and Pasta","nutrientsPer100g":{"energy_kcal":366,"protein_g":10.9,"fat_g":1.48,"sat_fat_g":null,"carbs_g":77.3,"sugars_g":null,"fiber_g":null,"sodium_mg":2},"sourceUrl":"https://fdc.nal.usda.gov","license":"Public domain (CC0 1.0)","attribution":"Source: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, Foundation Foods, April 2026. fdc.nal.usda.gov. Public domain (CC0 1.0).","matchScore":10.88}],"whereToBuy":null,"unknowns":["usda_fdc 790018 sat_fat_g: not published in this release","usda_fdc 790018 sugars_g: not published in this release","usda_fdc 789890 sat_fat_g: not published in this release","usda_fdc 789890 sugars_g: not published in this release","usda_fdc 789890 fiber_g: not published in this release","allergens: not provided for USDA generic foods (give a barcode for Open Food Facts contributor data)"]}],"attribution":["Source: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central, Foundation Foods, April 2026. fdc.nal.usda.gov. Public domain (CC0 1.0)."],"disclaimer":"Indicative data only. Open Food Facts data is entered by volunteers and USDA data describes generic or reported foods; values can be wrong, missing or out of date, and recipes and labels change. Allergen and ingredient fields may be incomplete: an empty or missing allergen list does NOT mean a product is free of any allergen or trace. Always check the product's own label. Not for medical, dietary or allergy decisions. Not advice.","fdcSnapshot":[{"dataType":"Foundation","release":"Foundation Foods, April 2026","url":"https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_foundation_food_json_2026-04-30.zip","zipSha256":"186e988ec542e913f51ef62b86a47758e8cdd0d1dc3889e7b055581f3c09c77a","foods":363},{"dataType":"SR Legacy","release":"SR Legacy, April 2018","url":"https://fdc.nal.usda.gov/fdc-datasets/FoodData_Central_sr_legacy_food_json_2018-04.zip","zipSha256":"0fe8ae486a2c8eb42cb96413f058deb51863a46c8fb8eeb4b1fb45006dd338ef","foods":7793}],"methodology":{"fdc":"USDA FoodData Central bundled snapshot (Foundation Foods + SR Legacy; release names and zip sha256 in fdcSnapshot). Name matching is deterministic token overlap on the food description; values are per 100 g as published. No outbound call.","openFoodFacts":"Open Food Facts live product read by barcode only (no name search), at most 12 reads per minute per server instance. Values per 100 g as entered by contributors; sodium converted from g to mg.","cache":"Cached Open Food Facts records are unaltered copies; full data: https://world.openfoodfacts.org/data (ODbL). At most 2000 records, each kept at most 24 hours, keyed by barcode; there is no bulk, list or export endpoint and records are never merged into Horizon Pulse tables.","allergens":"Allergens come only from Open Food Facts contributors, as listed. When Open Food Facts lists none, allergens is null and allergensStatus is \"unknown\": never an empty list.","whereToBuy":"Store names as listed by Open Food Facts contributors plus the Open Food Facts product page. No retailer links; Horizon Pulse never contacts retailer sites. No prices, no stock.","docs":"Nutrition and product data come from Open Food Facts (https://openfoodfacts.org), made available under the ODbL (database) and DbCL (contents), and from USDA FoodData Central (fdc.nal.usda.gov, public domain/CC0). Horizon Pulse is not affiliated with or endorsed by Open Food Facts or USDA. The per-call fee is for our service; the underlying data is free from those sources.","storage":"Nothing about the caller is stored or logged."}}}