---
title: "Instant Payment Limits Reference + Rail Comparator"
method: POST
path: "/v1/tools/lookup_instant_payment_limits"
tags: ["instant payments", "limits", "FedNow", "RTP", "SEPA Instant", "Faster Payments", "PIX", "reference"]
---

# Instant Payment Limits Reference + Rail Comparator

`POST /v1/tools/lookup_instant_payment_limits`

## Request

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

Reference table of transaction limits, availability, settlement finality, and participant counts for all major instant payment rails globally (FedNow, RTP, SEPA Instant, Faster Payments, PIX, UPI, and more). Filter and compare up to four rails.

**Tool URL:** https://ainumbers.co/tools/17-instant-payment-limits.html
**AP2/Policy Mandate export:** yes

## Request body

- object
  - `region` string
  - `currency` string
  - `compareIds` string[]

## Response `200`

Successful tool execution result

- object
  - `rail_count` number
  - `filtered_count` number
  - `compare_rails` object[]

---

[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)