---
title: "Transaction Velocity Rule Simulator · RBE·10"
method: POST
path: "/v1/tools/velocity_rule_simulator"
---

# Transaction Velocity Rule Simulator · RBE·10

`POST /v1/tools/velocity_rule_simulator`

## Request

- Base URL: `https://ainumbers.co`
- URL: `https://ainumbers.co/v1/tools/velocity_rule_simulator`
- Auth: none declared

Author multi-dimensional AML/fraud velocity rules, simulate against synthetic transaction streams with configurable time-of-day patterns, generate rule contribution breakdowns, confusion matrices, FATF typology mapping, and EBA GL/2021/05 pre-deployment audit trails. Policy Mandate JSON export. Zero PII. Client-side. Works offline.

**Tool URL:** https://ainumbers.co/tools/rbe-10-velocity-rule-simulator.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `rules` object[], required
    - `name` string, required
    - `dimensions` object[], required
      - `dimension` 'tx_count' | 'tx_amount' | 'time_window' | 'merchant_type' | 'geography' | 'device_proxy' | 'currency'
      - `operator` '>' | '>=' | '<' | '<=' | '=' | '!='
      - `threshold` unknown
      - `weight` number
    - `outcome` 'flag' | 'block' | 'escalate' | 'pass', required
  - `stream_length` integer
  - `sar_injection_rate` number
  - `random_seed` integer: Seed for mulberry32 PRNG — same seed always produces identical stream
  - `amount_mean` number
  - `amount_std_dev` number
  - `merchant_mix` object
    - `retail_pct` number
    - `msb_pct` number
    - `crypto_pct` number
    - `gambling_pct` number
    - `cross_border_pct` number
  - `time_distribution` object
    - `pattern` 'uniform' | 'business_hours' | 'night_shift' | 'custom'
    - `hour_weights` number[]

## Response `200`

Successful tool execution result

- object
  - `rule_library` unknown[]
    - unknown
  - `conflicts` unknown[]
    - unknown
  - `stream_config` object
  - `fatf_typology_mapping` unknown[]
    - unknown
  - `suite_metrics` object
    - `aggregate_false_positive_rate` number
    - `aggregate_recall` number

---

[API](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite.md) · [All operations](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/llms.txt) · [OpenAPI document](https://skmtc.dev/ainumbers/apis/ainumbers-co-fintech-intelligence-suite/revisions/b462e4f5bb28?raw)