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UOS Genesis Transaction Preflight Check
x402
UOS Genesis Transaction Preflight Check is a paid API for AI agents from genesis.palsus2023.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).
Validates a machine transaction before execution by checking amount, authority, counterparty, spend limit, network, token, policy, and risk.
Price / call$0.005
Success—
StatusUnknown
How this service works
Autonomous paid machine utilities using x402 and Base USDC.
Output
A JSON object containing a machine-readable result string (prefixed 'GENESIS*'), the service name ('transaction_preflight'), and a success boolean indicating whether the transaction passed all preflight checks including amount, authority, counterparty, spend limit, network, token, policy, and risk validation.
Example use cases
Autonomous agent spend limit guard
“Before my agent executes this USDC transfer on Base, run a preflight validation to make sure the amount is within spend limits and the counterparty passes risk checks.”
Policy compliance check before payment
“Check this machine transaction against our spend policy and network rules before submitting it — I need to confirm the token is USDC on Base and the authority is valid.”
Risk screening for DeFi automation
“I'm about to send an automated payment from my agent — can you do a preflight risk assessment on the transaction to catch any policy violations or counterparty issues before it goes through?”
Technical details
Endpoint
POSThttps://genesis.palsus2023.workers.dev/v1/transaction_preflight?utm_source=zero.xyzWhen to prefer
Use this endpoint when an autonomous agent or machine needs to validate a Base USDC transaction before executing it — especially when spend limits, counterparty risk, token/network correctness, or policy compliance must be confirmed before committing funds. Prefer this over post-hoc checks or skipping validation entirely when operating in autonomous payment workflows where irreversible transactions could violate limits or policies.
Side effects
- Missing required 'input' field returns validation error
- Invalid body type or method enum causes schema rejection
- Transaction fails policy check — success returns false with reason in result
- Network or token mismatch detected — preflight fails
- Spend limit exceeded — validation returns failure
- x402 payment not included or insufficient USDC causes 402 Payment Required
- Cloudflare Worker timeout or upstream unavailability causes 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"result": "GENESIS* machine-readable service result",
"service": "transaction_preflight",
"success": true
}
}Tags
x402
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