Deposit Stablecoins

Supported stablecoins

Token	Endpoint	Mint Address	Conversion
USDC	POST /v1/billing/deposit-usdc	EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v	1:1
USDT	POST /v1/billing/deposit-usdt	Es9vMFrzaCERmKcoYhgNPJ9rg9fNimJik6Xvxp7UYA8e	1:1
PYUSD	POST /v1/billing/deposit-pyusd	2b1kV6DkPAnxd5ixfnxCpjxmKwqjjaYmCZfHsFu24GXo	1:1

All stablecoins are SPL tokens on Solana mainnet. They credit compute credits at a 1:1 rate with USD.

Treasury wallet: 9Nc6u9ft3uAr6DSaqHijFjQS53hZPDRL2LoVYvH4vK5H

Deposit USDC

1. Send USDC (SPL) to the treasury wallet on Solana mainnet.
2. Submit the transaction signature.

curl -X POST https://agents.systemr.ai/v1/billing/deposit-usdc \
  -H "X-API-Key: sr_agent_..." \
  -H "Content-Type: application/json" \
  -d '{
    "tx_signature": "5xYz...your_solana_tx_signature"
  }'

Response:

{
  "agent_id": "agt_a1b2c3d4",
  "currency": "USDC",
  "amount": "100.00",
  "compute_credits": "100.00",
  "balance_after": "142.50",
  "tx_id": "tx_ghi789",
  "tx_signature": "5xYz..."
}

Deposit USDT

curl -X POST https://agents.systemr.ai/v1/billing/deposit-usdt \
  -H "X-API-Key: sr_agent_..." \
  -H "Content-Type: application/json" \
  -d '{
    "tx_signature": "5xYz...your_solana_tx_signature"
  }'

Deposit PYUSD

curl -X POST https://agents.systemr.ai/v1/billing/deposit-pyusd \
  -H "X-API-Key: sr_agent_..." \
  -H "Content-Type: application/json" \
  -d '{
    "tx_signature": "5xYz...your_solana_tx_signature"
  }'

Verification

For all stablecoin deposits, the system verifies:

1. The transaction is finalized on Solana mainnet.
2. The transfer is an SPL token transfer of the correct mint.
3. The destination is the treasury wallet.
4. The transaction has not been previously processed (replay protection).

Why Solana

All deposits use Solana mainnet for fast finality (approximately 400ms) and low transaction fees (fractions of a cent). This makes micro-deposits practical. You can deposit $5 worth of USDC without the transaction fee eating into your credits.

USDC is the recommended deposit method

USDC is the simplest path:

• 1:1 conversion, no price volatility.
• Highest liquidity on Solana.
• Widest on-ramp support (Coinbase, Binance, Phantom, etc.).
• No conversion calculation needed.

If you already hold SOL, depositing SOL is equally straightforward and converts at the live market price. If you hold OSR, you benefit from the token utility discount.