# Every tool, and what it answers. 11 tools behind one MCP endpoint. 7 lookups are free; 4 are metered at $0.05 an answer billed to an account, or at $0.50 paid with the call. Each page carries the tool's inputs, a request to copy, and the records it cites. 11 of 11 tools - [gtin_resolve Free A barcode to the records that carry it, in whichever family holds them.](https://citature.com/tools/gtin_resolve/) - [food_lookup Free A barcode or a name to what the record says about a food.](https://citature.com/tools/food_lookup/) - [supplement_lookup Free A supplement label to the ingredients and amounts it declares.](https://citature.com/tools/supplement_lookup/) - [drug_label_lookup Free A barcode, an NDC or a name to what that product's own label says.](https://citature.com/tools/drug_label_lookup/) - [ingredient_resolve Free Ingredient text to registered substances, each identified.](https://citature.com/tools/ingredient_resolve/) - [substance_lookup Free A registry key to the substance record and its crossrefs.](https://citature.com/tools/substance_lookup/) - [reference_amounts Free Reference amounts and Daily Values, quoted from regulation.](https://citature.com/tools/reference_amounts/) - [rule_evaluate $0.05 / evaluation $0.50 paid with the call Your rule, our evidence — clause by clause, with citations.](https://citature.com/tools/rule_evaluate/) - [enforcement_check $0.05 / check $0.50 paid with the call Whether a matching enforcement record exists — and what that does not mean.](https://citature.com/tools/enforcement_check/) - [adverse_events $0.05 / check $0.50 paid with the call Reported food adverse event counts per brand, filterable by category.](https://citature.com/tools/adverse_events/) - [dietary_intake $0.05 / estimate $0.50 paid with the call Mean daily intake of a nutrient, for a population, with its interval.](https://citature.com/tools/dietary_intake/) - [Receipts →](https://citature.com/receipts/) - [Connect →](https://citature.com/mcp/) --- The page this is the markdown of: