affaan-m/ECC · error · SpendLimitError

Single tx exceeds max

Error message

Single tx ${usd_amount} exceeds max ${MAX_SINGLE_TX_USD}

What it means

Illustrative hard-limit guard from the llm-trading-agent-security skill: SpendLimitGuard.check_and_record raises SpendLimitError when a single transaction's USD amount exceeds MAX_SINGLE_TX_USD. It fires before the daily-spend check and before any spend is recorded.

Solutions

1. Split oversized intents into multiple sub-limit transactions or reject them
2. Require human approval for amounts near the cap
3. Set caps per environment and alert when they fire

When it happens

Trigger: Thrown at skills/llm-trading-agent-security/SKILL.md:63 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of affaan-m/ECC@d8409a4b08 (2026-08-26). Data as JSON: /api/errors/ae037c0241120b59. Report an issue: GitHub.

Appendix: source

Thrown at skills/llm-trading-agent-security/SKILL.md:63

```

Do not blindly inject token names, pair labels, webhooks, or social feeds into an execution-capable prompt.

### Hard spend limits

```python
from decimal import Decimal

MAX_SINGLE_TX_USD = Decimal("500")
MAX_DAILY_SPEND_USD = Decimal("2000")

class SpendLimitError(Exception):
    pass

class SpendLimitGuard:
    def check_and_record(self, usd_amount: Decimal) -> None:
        if usd_amount > MAX_SINGLE_TX_USD:
            raise SpendLimitError(f"Single tx ${usd_amount} exceeds max ${MAX_SINGLE_TX_USD}")

        daily = self._get_24h_spend()
        if daily + usd_amount > MAX_DAILY_SPEND_USD:
            raise SpendLimitError(f"Daily limit: ${daily} + ${usd_amount} > ${MAX_DAILY_SPEND_USD}")

        self._record_spend(usd_amount)
```

### Simulate before sending

```python
class SlippageError(Exception):
    pass

async def safe_execute(self, tx: dict, expected_min_out: int | None = None) -> str:
    sim_result = await self.w3.eth.call(tx)

    if expected_min_out is None:

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