Which cryptocurrencies does JamsrPay support?

JamsrPay supports all major cryptocurrencies including USDT (TRON, BNB Chain, Ethereum, Solana, Polygon), USDC, Bitcoin (BTC), Ethereum (ETH), Solana (SOL), TRON (TRX), BNB, Litecoin, and more.

How do I integrate JamsrPay into my application?

You can integrate using our REST APIs, SDKs (TypeScript, Python, Go, Rust, PHP), and pre-built hosted checkout. A developer staging sandbox is available with instant test API keys.

Do you custody customer or merchant funds?

No. JamsrPay is non-custodial. We never hold your private keys or touch your balance sheet. Payments route directly from customer wallets to your designated merchant wallet address.

How does settlement work?

Once confirmed on-chain, JamsrPay instantly detects the transaction, cryptographically signs and broadcasts a webhook notification, and your funds settle directly to your self-custody wallet in real-time.

What are the processing fees?

Transaction fees start from just 0.4% + $0.25 with a 29-day free trial, 0% chargebacks, and zero monthly subscription fees. Volume rates scale down automatically to 0.25%.

Terms of Service

Effective Date: August 2026

Non-Custodial Merchant AgreementJamsrPay provides communication software and payment routing APIs. JamsrPay is not a bank, escrow agent, or financial intermediary. Merchants retain sole control over their private keys and digital asset wallets.

1. Acceptance of Terms

By accessing, integrating, or utilizing the JamsrPay payment gateway, merchant dashboard, SDKs, or APIs, you agree to be bound by these Terms of Service. If you do not agree to these terms, you must discontinue use of the platform immediately.

2. Nature of Software Services (Non-Custodial)

JamsrPay operates strictly as an autonomous technical gateway facilitating on-chain payment session generation and webhook notifications:

JamsrPay never takes possession, ownership, or custody of customer or merchant funds.
All payments settle directly from the customer's wallet to the merchant's designated public wallet address on public blockchains.
JamsrPay cannot reverse, modify, or freeze confirmed blockchain transactions.

3. Processing Fees & Billing

Merchants agree to the standard processing fee of 0.4% + $0.25 per settled transaction. Fees are automatically calculated and deducted during on-chain settlement routing. There are zero hidden monthly maintenance fees or setup charges unless explicitly agreed upon in an enterprise tier agreement.

4. Prohibited Activities

You agree not to utilize JamsrPay APIs or payment infrastructure for:

Transactions involving sanctioned individuals, entities, or jurisdictions.
Facilitating malware, ransomware extortion, phishing scams, or pyramid schemes.
Unauthorized sale of regulated substances, firearms, or counterfeit merchandise.
Attempting to disrupt, exploit, or reverse-engineer JamsrPay infrastructure or APIs.

5. Limitation of Liability

To the maximum extent permitted by applicable law, JamsrPay shall not be liable for any indirect, incidental, special, or consequential damages resulting from blockchain network congestion, hard forks, smart contract exploits on underlying networks, or merchant loss of private keys.

6. Contact & Legal Inquiries

For legal questions regarding these Terms, contact our legal compliance team at [email protected].