Catches the mistakes coding agents repeat before they merge: a pull-request gate with no model call and no API key.
Short answer: Store money as integer minor units (cents) + currency. A float cannot hold 0.1 exactly, so sums of money drift by a cent.
Group: Billing and money. Status: stable. Generated from the rule definitions; do not edit by hand.
Playground: https://brevio.pro/tools/agent-guard-playground?rule=R3.2
Monetary integer representation: store money as integer minor units (cents) + currency.
A float cannot hold 0.1 exactly, so sums of money drift by a cent.
const price = amountCents / 100;
const priceCents = amountCents; // format when you show it
dev_rules.scan_added_lines); brevio-core scan does not run it.dev_rules.slice_micro_rules).A person can silence one finding with brevio-core: ignore R3.2 -- reason on the line or the line above. Without the reason it does not count. An agent cannot silence it: the agent hook and the MCP tools never honour the comment, and a pull request that adds one is reported until a reviewer allows it. Fixing the code is still the better answer.
What the scanner already leaves alone: A file named format* or display, a component, a function named format/display* and a line that calls Intl.NumberFormat, toLocaleString or toFixed are not flagged.
A scan reads only the lines you add, so a line that was already in the file is not flagged.
To change what the rule flags, edit its definition in dev_rules.py or code_rules/__init__.py. That is a code change and is reviewed like one.