Compute Credits

System R AI is usage-based. Credits are deducted per tool call and per LLM request. One account balance shared across all your API keys.

• New accounts get $5 free credits on first API key generation
• Balance at $0 = service stops. No surprise charges.
• Credits never expire

Add credits

Card (Stripe)

The simplest way. Pay with any credit or debit card. $5 minimum, $10,000 maximum.

From the portal: app.systemr.ai/billing

Via API:

curl -X POST https://agents.systemr.ai/v1/billing/checkout \
  -H "X-API-Key: sr_agent_..." \
  -H "Content-Type: application/json" \
  -d '{"amount": 50}'

Crypto

Send tokens to the treasury wallet on Solana mainnet. Credits added instantly after verification.

Treasury wallet: 9Nc6u9ft3uAr6DSaqHijFjQS53hZPDRL2LoVYvH4vK5H

What gets billed

Tool calls

Each of the 58 operations has a fixed price ($0.002 - $2.00). See Pricing.

LLM usage

When using System R's hosted LLM (chat, CLI), token usage is billed per request at the following rates:

BYOK (Bring Your Own Key)

Provide your own Anthropic or OpenAI API key. LLM calls use your key — zero LLM charge from us. You only pay for tool calls.

client.chat("analyze my portfolio", external_api_key="sk-ant-...")

How billing works per call

1. You call a tool or send a chat message
2. System checks your account balance
3. If sufficient: tool executes, cost deducted, result returned
4. If insufficient: HTTP 402 returned. No deduction, no execution.
5. Transaction logged in audit trail

OSR payments receive 50% bonus credits — the best value on the platform.

Per-key limits

Set spending caps per API key from the Dashboard:

• Daily limit — max spend per day for this key
• Monthly limit — max spend per month for this key
• Allowed operations — restrict which tools this key can call

All keys share one account balance. Limits protect against runaway usage.

Check balance

curl https://agents.systemr.ai/v1/billing/balance \
  -H "X-API-Key: sr_agent_..."

{
  "balance": "42.50",
  "is_low": false,
  "updated_at": "2026-03-31T12:00:00Z"
}

View usage

curl https://agents.systemr.ai/v1/billing/usage \
  -H "X-API-Key: sr_agent_..."

Returns usage grouped by operation type with call count and total cost.

View transactions

curl https://agents.systemr.ai/v1/billing/transactions?limit=20 \
  -H "X-API-Key: sr_agent_..."

Returns all credits, deductions, and deposits with timestamps.