Supported Networks & Methods

Overview

KillB supports a wide range of fiat currencies, cryptocurrencies, payment methods, and blockchain networks to serve users across Latin America.

Fiat Currencies

COP 🇨🇴

Colombian PesoPayment Methods:

PSE
TRANSFIYA
Bank Transfer

MXN 🇲🇽

Mexican PesoPayment Methods:

SPEI
Bank Transfer

USD 🇺🇸

US DollarPayment Methods:

ACH
Wire Transfer

Cryptocurrencies

USDC
USDT

USD Coin - Fully backed US dollar stablecoinSupported Networks:

Polygon (Recommended)
Ethereum (ERC20)
Solana
Arbitrum
Tron
BSC (Binance Smart Chain)

Use Cases:

On/Off-ramps
Savings accounts
Cross-border payments

Payment Methods by Country

Colombia (COP)

PSE (Pagos Seguros en Línea)

Real-time bank transfers in ColombiaFeatures:

Instant confirmation
Supports all major Colombian banks
User-friendly checkout experience

Requirements:

Colombian bank account
Valid ID (NUIP, CC, NIT)

Limits: Based on user KYC level

TRANSFIYA

Mobile wallet and instant transfersFeatures:

Phone number or wallet-based
Fast processing
Low fees

Account Types:

Phone Number
Wallet Address

Limits: Based on user KYC level

Bank Transfer

Traditional bank transfersFeatures:

Support for savings and checking accounts
All Colombian banks supported
Batch processing available

Processing Time: 1-3 business days

Mexico (MXN)

SPEI

Mexican instant payment systemFeatures:

Real-time transfers 24/7
CLABE-based addressing
Alternative: Phone number, Debit card

Requirements:

18-digit CLABE number OR
16-digit debit card number OR
10-digit phone number
Valid RFC or CURP

Processing: Instant (24/7)

Bank Transfer

Traditional wire transfersFeatures:

All major Mexican banks
Higher limits available
Suitable for large transactions

Processing Time: Same day to 1 business day

United States (USD)

ACH (Automated Clearing House)

Standard US bank transfersFeatures:

Low cost
All US banks supported
Routing and account numbers

Requirements:

US bank account
9-digit routing number
Account number
SSN (for KYC)

Processing Time: 1-3 business days

Wire Transfer

Fast domestic and international transfersFeatures:

Same-day processing
Higher limits
SWIFT support for international

Requirements:

Bank account details
Routing number
Bank address

Processing Time: Same day

Blockchain Networks

Low fees, fast transactionsNetwork Details:

Chain ID: 137
Block Time: ~2 seconds
Avg Gas Fee: Less than $0.01

Best For:

Small to medium transactions
High-frequency transfers
Cost-sensitive applications

Example

{
  "currency": "USDC",
  "network": "POLYGON",
  "address": "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb"
}

High performance, low costNetwork Details:

Block Time: ~400ms
Avg Transaction Fee: Less than $0.001
High throughput

Best For:

Ultra-low fee requirements
High-speed transactions
DeFi integrations

Example

{
  "currency": "USDC",
  "network": "SOLANA",
  "address": "5FHwkrdxntdK24hgQU8qgBjn35Y1zwhz1GZwCkP4UJnC"
}

Most widely supportedNetwork Details:

Chain ID: 1
Block Time: ~12 seconds
Higher gas fees

Best For:

Maximum compatibility
Large transactions
DeFi protocols

Example

{
  "currency": "USDC",
  "network": "ERC20",
  "address": "0x742d35Cc6634C0532925a3b844Bc9e7595f0bEb"
}

Supported Currency Pairs

Available Trading Pairs

On-Ramp (Fiat → Crypto)
Off-Ramp (Crypto → Fiat)

From	To	Methods
COP	USDC	PSE, TRANSFIYA, Bank Transfer
COP	USDT	PSE, TRANSFIYA, Bank Transfer
MXN	USDC	SPEI, Bank Transfer
MXN	USDT	SPEI, Bank Transfer
USD	USDC	ACH, Wire
USD	USDT	ACH, Wire

From	To	Networks
USDC	COP	Polygon, Solana, Tron, Arbitrum, BSC, ERC20
USDT	COP	Polygon, Solana, Tron, Arbitrum, BSC, ERC20
USDC	MXN	Polygon, Solana, Tron, Arbitrum, BSC, ERC20
USDT	MXN	Polygon, Solana, Tron, Arbitrum, BSC, ERC20
USDC	USD	Polygon, Solana, Tron, Arbitrum, BSC, ERC20
USDT	USD	Polygon, Solana, Tron, Arbitrum, BSC, ERC20

Pre-Funded Accounts

Pre-funded accounts allow for faster transaction processing by maintaining a balance with KillB. Supported Networks for Pre-Fund:

PRE_FUND - Fiat currencies (USD, COP, MXN)
PRE_FUND_POLYGON - USDC/USDT on Polygon
PRE_FUND_ERC20 - USDC/USDT on Ethereum
PRE_FUND_SOLANA - USDC/USDT on Solana
PRE_FUND_TRON - USDC/USDT on Tron
PRE_FUND_ARBITRUM - USDC/USDT on Arbitrum

Benefits:

Instant transaction execution
No waiting for payment confirmation
Better rates for high volume
Simplified reconciliation

Learn More

Read the complete pre-funded accounts guide

Checking Available Options

Use the /api/v2/customers/pairs endpoint to get your customer’s available currency pairs and methods:

curl --request GET \
  --url https://teste-94u93qnn.uc.gateway.dev/api/v2/customers/pairs \
  --header 'Authorization: Bearer YOUR_ACCESS_TOKEN'

Response:

{
  "pairs": ["COP-USDC", "COP-USDT", "MXN-USDC", "MXN-USDT"],
  "options": {
    "USDC": {
      "regular": ["POLYGON", "SOLANA", "TRON"],
      "preFund": ["PRE_FUND_POLYGON", "PRE_FUND_SOLANA"]
    },
    "COP": {
      "regular": ["PSE", "TRANSFIYA"],
      "preFund": ["PRE_FUND"]
    }
  }
}

Transaction Limits

Limits vary by KYC level and payment method:

KYC Level	Daily Limit	Monthly Limit	Requirements
L0	$500	$1,000	Email only
L1	$2,500	$10,000	Basic ID verification
L2	$10,000	$50,000	Full KYC + proof of address
L3	$50,000	$250,000	Enhanced KYC + source of funds
L4	Custom	Custom	Enterprise verification

Limits are subject to your customer configuration. Contact [email protected] to adjust limits.

Network Selection Guide

Choose the right network for your use case:

For Small Transactions (<$100)

Recommended: Polygon or Solana

Lowest fees
Fast confirmation
Best user experience

For Medium Transactions ($100-$10,000)

Recommended: Polygon, Solana, or Arbitrum

Balance of fees and security
Good liquidity
Wide exchange support

For Large Transactions (>$10,000)

Recommended: Ethereum (ERC20) or Arbitrum

Highest security
Best liquidity
Maximum compatibility

For USDT Specifically

Recommended: Tron

Lowest fees for USDT
Very popular in LatAm
Fast transactions

Next Steps

Create Your First Ramp

Start processing on-ramp transactions

API Reference

Explore the complete API documentation

Get Started

Core Concepts

Users & KYC

Accounts

Pre-Funded Accounts

On/Off Ramps

Savings & Custodial

Webhooks

Resources

Overview

Fiat Currencies

COP 🇨🇴

MXN 🇲🇽

USD 🇺🇸

Cryptocurrencies

Payment Methods by Country

Colombia (COP)

Mexico (MXN)

United States (USD)

Blockchain Networks

Supported Currency Pairs

Available Trading Pairs

Pre-Funded Accounts

Learn More

Checking Available Options

Transaction Limits

Network Selection Guide

Next Steps

Create Your First Ramp

API Reference

Get Started

Core Concepts

Users & KYC

Accounts

Pre-Funded Accounts

On/Off Ramps

Savings & Custodial

Webhooks

Resources

​Overview

​Fiat Currencies

COP 🇨🇴

MXN 🇲🇽

USD 🇺🇸

​Cryptocurrencies

​Payment Methods by Country

​Colombia (COP)

​Mexico (MXN)

​United States (USD)

​Blockchain Networks

​Supported Currency Pairs

​Available Trading Pairs

​Pre-Funded Accounts

Learn More

​Checking Available Options

​Transaction Limits

​Network Selection Guide

​Next Steps

Create Your First Ramp

API Reference

Overview

Fiat Currencies

Cryptocurrencies

Payment Methods by Country

Colombia (COP)

Mexico (MXN)

United States (USD)

Blockchain Networks

Supported Currency Pairs

Available Trading Pairs

Pre-Funded Accounts

Checking Available Options

Transaction Limits

Network Selection Guide

Next Steps