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Nomos Agent Authorization Profile
x402
Nomos Agent Authorization Profile is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $1/call, status unknown (last checked 2026-09-13).
Evaluates an agent's mandate and requested action to produce a risk score, risk level, and authorization flags for pre-flight clearance before execution.
Price / call$1
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 for Base), a product label (nomos-agent-authorization-profile), and an assessment block with a list of flags (empty if clean), a risk_level string (e.g. 'low'), and a numeric risk_score (e.g. 0). A clean result has empty flags and a low risk score, indicating the agent is cleared to proceed.
Example use cases
Pre-purchase risk clearance for agent
“My agent wants to buy access to a third-party API — can you run a Nomos authorization profile on its mandate to make sure the risk score is low and no flags are raised before it goes ahead with the API_PURCHASE?”
Agent fleet compliance gate
“Before any agent in my fleet executes an API_PURCHASE action, I want each one to get a Nomos authorization profile assessment — check the mandate and tell me the risk level and any flags so I can decide whether to let it proceed.”
Autonomous payment preflight audit
“Run a Nomos authorization profile preflight on this agent's mandate right now — I need to see the risk score and whether there are any flags before it makes an API_PURCHASE on the Base network.”
Technical details
Endpoint
POSThttps://base-agent-preflight.bytoken2023.workers.dev/x402/v1/agent/authorization-profileWhen to prefer
Use this endpoint when an autonomous agent needs a structured pre-flight authorization check — specifically a risk score and flag assessment — before executing an API_PURCHASE action. It is purpose-built for agent-to-agent or agent-to-API authorization gating on the Base network with pay-per-request pricing via x402, making it suitable for agentic workflows where you want a lightweight, on-demand clearance signal rather than a persistent identity or session-based auth system.
Side effects
- Missing or malformed mandate field returns a validation error
- Invalid requested_action type (not API_PURCHASE) may return an unsupported action error
- Payment not processed correctly via x402 results in 402 Payment Required before assessment is returned
- High risk score or non-empty flags indicate the agent should not proceed but the API call itself succeeds
- Network or Cloudflare Worker downtime returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| mandate | string | |
| requested_action | API_PURCHASE |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "eip155:8453",
"product": "nomos-agent-authorization-profile",
"assessment": {
"flags": [],
"risk_level": "low",
"risk_score": 0
}
}
}Tags
x402
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