# Nomos Agent Mandate Verify

> Nomos Agent Mandate Verify is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $1.5/call, status unknown (last checked 2026-09-14).

Verifies that an agent's requested action is consistent with its declared mandate/goal, returning a risk assessment and compliance flags.

## Facts

- Endpoint: POST https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/agent/mandate/verify
- Price: $1.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/nomos-agent-mandate-verify-a7495076
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WWAhbqk-Ggx516aOub_MX

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability nomos-agent-mandate-verify-a7495076 -d '<json body>'
```

Example prompt: Before I proceed, run a Nomos mandate verification for agent 'agent-0xABC', whose mandate is 'manage DeFi portfolio', requested goal is 'maximize yield', and requested action is 'swap USDC to ETH' — I want to know the risk score and whether there are any compliance flags.

## When to prefer this

Use this endpoint when you need a structured, paid preflight compliance check specifically for autonomous agents acting on declared mandates — particularly in agentic pipelines on Base/EVM networks where mandate provenance and risk scoring are needed before irreversible actions. Prefer this over generic authorization APIs when you need agent-specific risk scoring tied to goal-mandate alignment rather than simple role-based access control.

## Known failure modes

- Missing required fields (agent, mandate, requested_goal, requested_action) return validation errors
- Unknown or unrecognized agent identifiers may result in inconclusive assessments
- Payment failure via x402 protocol results in 402 response and no assessment
- High-risk actions return populated flags array requiring human review
- Service unavailability on Cloudflare Workers returns 5xx errors

## 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 with network context (e.g. 'eip155:8453'), product identifier ('nomos-goal-mandate-provenance'), and an assessment object containing a risk_level string (e.g. 'low'), a numeric risk_score, and an array of compliance flags (empty if none). This allows an agent or orchestrator to decide whether to proceed with the action.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "agent": {
   "type": "string"
  },
  "mandate": {
   "type": "string"
  },
  "requested_goal": {
   "type": "string"
  },
  "requested_action": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "network": "eip155:8453",
  "product": "nomos-goal-mandate-provenance",
  "assessment": {
   "flags": [],
   "risk_level": "low",
   "risk_score": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nomos-agent-mandate-verify-a7495076/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from base-agent-preflight.bytoken2023.workers.dev](https://www.zero.xyz/host/base-agent-preflight.bytoken2023.workers.dev/llms.txt)