# NO HANDS AI Action Envelope Review

> NO HANDS AI Action Envelope Review is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $2.5/call, status unknown (last checked 2026-10-11).

Reviews an action envelope for risk, flags, and compliance before an autonomous agent executes a spend or on-chain action.

## Facts

- Endpoint: POST https://base-agent-preflight.bytoken2023.workers.dev/x402/v1/execution/action-envelope/review?utm_source=zero.xyz
- Price: $2.5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/no-hands-ai-action-envelope-review-3ebfe1ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6M5sUOeKy-ux7t2n0h1Mv

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 no-hands-ai-action-envelope-review-3ebfe1ee -d '<json body>'
```

Example prompt: Before my agent executes this action, run a preflight risk review on the action envelope — here's the mandate, approval, decision, and envelope payload — and tell me the risk level and any flags so I know it's safe to proceed.

## When to prefer this

Choose this endpoint when an autonomous agent needs a structured, machine-payable pre-execution compliance and risk review of an action envelope before spending on-chain — especially when the agent operates on Base (eip155:8453) and requires a risk score and flag list rather than a simple binary allow/deny.

## Known failure modes

- Missing required fields (mandate, approval, decision, or envelope) may result in validation errors
- Malformed envelope payloads may return unparseable or high-risk assessments
- Payment failure ($2.5 USDC per call) will block the request under x402 protocol
- Ambiguous or incomplete mandate strings may yield inconclusive risk assessments

## 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 the network (eip155:8453), product name (nomos-action-envelope-review), and an assessment containing a list of flags, a risk_level (e.g. 'low'), and a numeric risk_score — allowing the calling agent to decide whether to proceed with the action.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "mandate": {
   "type": "string"
  },
  "approval": {
   "type": "string"
  },
  "decision": {
   "type": "string"
  },
  "envelope": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "network": "eip155:8453",
  "product": "nomos-action-envelope-review",
  "assessment": {
   "flags": [],
   "risk_level": "low",
   "risk_score": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/no-hands-ai-action-envelope-review-3ebfe1ee/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)