Zucca

Zucca gives Claude cited answers from Title 21 of the Code of Federal Regulations (21 CFR). It is free to use and needs no account or API key.

Ask a question about what the regulations require, permit or define, and Claude can search the text, read whole sections in order, and quote the exact rule. Every passage comes back with its section citation and a link to the official text on eCFR, so you can check the answer yourself.

Five read-only tools:

• Search: finds the passages that best answer a question, matching both its words and its meaning.
• Browse: lists the parts held, or every section in a part, with headings.
• Read a section: returns a whole section, or one paragraph of it, in document order.
• Read a passage: returns one passage by the exact id another tool gave.
• Find exact text: finds passages containing an exact phrase.

Coverage: 21 CFR parts 1, 101, 102, 104, 105, 111 and 130, covering food labeling, nutrition facts, nutrient content and health claims, serving sizes, common names, dietary supplement manufacturing and food standards. Every response names the parts and edition it covers, so Claude never has to guess the scope.

Useful for regulatory, quality and product teams checking labeling rules, nutrient content and health claims, serving sizes and definitions.

It returns regulation text, not legal advice. Built by Zucca (zucca.ai).