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Nomos Service Health Check
x402
Nomos Service Health Check is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Checks the health and operational status of a target Nomos Agent Intelligence service endpoint, returning network, product, and risk assessment metadata.
Price / call$0.02
Success—
StatusUnknown
How this service works
Machine-payable service intelligence for discovering, verifying, and monitoring identity, risk, authorization, execution-preflight, and evidence APIs before autonomous agents spend.
Output
Returns a JSON object containing the network identifier (e.g. eip155:8453), the product name (e.g. nomos-service-health), and an assessment object with risk_level (e.g. 'low'), risk_score (numeric), and a flags array indicating any issues detected.
Example use cases
Pre-execution agent service verification
“Before my agent calls the Nomos identity API, can you check that the service at https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/health is healthy and the risk score is low?”
Monitoring agent API uptime
“I want to know if the Nomos preflight service is currently up and operational — can you probe https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/health and report back on the network, product name, and any risk flags?”
Validating service before USDC payment
“Check the health of this agent service endpoint before I authorize a USDC payment to it — target URL is https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/health on the eip155:8453 network.”
Technical details
Endpoint
POSThttps://base-agent-preflight.bytoken2023.workers.dev/x402/v1/service/healthWhen to prefer
Use this endpoint when you need to verify the operational health and risk posture of a Nomos agent service URL before committing resources or executing a paid agent workflow. It is specifically suited for pre-flight validation in autonomous agent pipelines that use x402 pay-per-request patterns on Base/EVM networks, and is preferable to generic HTTP ping checks because it returns structured risk assessments, network context, and product metadata.
Side effects
- Invalid or unreachable target_url returns an error or non-healthy status
- Malformed request schema (missing required 'type' or 'method' fields) results in a 4xx error
- Payment not provided or insufficient USDC triggers a 402 Payment Required response
- target_url exceeding 500 characters or below 8 characters fails schema validation
- Network mismatch between expected_network and actual service network may return elevated risk flags
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "eip155:8453",
"product": "nomos-service-health",
"assessment": {
"flags": [],
"risk_level": "low",
"risk_score": 0
}
}
}Tags
x402
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