---
title: "Open Banking API Explorer + Rate Limit Simulator"
method: POST
path: "/v1/tools/simulate_api_rate_limit"
tags: ["open banking", "API", "rate limiting", "token bucket", "retry", "PSD2", "UK OB"]
---

# Open Banking API Explorer + Rate Limit Simulator

`POST /v1/tools/simulate_api_rate_limit`

## Request

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

Explores Open Banking API endpoints (accounts, transactions, payments, balances) with mock responses, and simulates rate-limiting policies (token bucket, leaky bucket, fixed window, sliding window) with timeline visualisation and retry code generation.

**Tool URL:** https://ainumbers.co/tools/10-open-banking-api-explorer.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `policy` string, required
  - `rpm` number, required
  - `burst` number

## Response `200`

Successful tool execution result

- object
  - `policy` string
  - `total_requests` number
  - `allowed` number
  - `throttled` number
  - `throttle_rate` number
  - `retry_code_lang` string

---

[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)