# NO HANDS AI AgentOps Guard Action Preflight

> NO HANDS AI AgentOps Guard Action Preflight is a paid API for AI agents from nohands-coinbase-bazaar.bytoken2023.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-11-02).

Returns an advisory REVIEW or BLOCK result (never ALLOW) for a proposed side-effecting agent action before it executes, as a pre-execution safety gate.

## Facts

- Endpoint: GET https://nohands-coinbase-bazaar.bytoken2023.workers.dev/v1/x402/agent/action-preflight?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/no-hands-ai-agentops-guard-action-preflight-01d7852f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Wg-pHISJatNP0LGHKvNxc

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-agentops-guard-action-preflight-01d7852f
```

Example prompt: Before my agent goes ahead and sends that payment request, can you run an AgentOps Guard preflight check on the action to see if it gets a REVIEW or BLOCK advisory?

## When to prefer this

Use this endpoint when you need a lightweight, advisory safety gate before an agent executes any side-effecting action (payments, writes, deletions, external API calls). It is specifically designed to return only REVIEW or BLOCK — never ALLOW — making it suitable as a conservative pre-execution checkpoint in agentic pipelines where human-in-the-loop or escalation logic follows a non-ALLOW result. Prefer this over generic policy checks when operating in an x402 or AgentOps context on the NO HANDS AI platform.

## Known failure modes

- Missing or malformed action description returns an error or ambiguous assessment
- Endpoint may return REVIEW as a conservative default when action intent is unclear
- GET method limits payload size for complex action descriptions
- Advisory result may be overly conservative, blocking legitimate low-risk actions
- Service unavailability returns no advisory, leaving agent without preflight guidance

## How this service works

Return an advisory AgentOps Guard REVIEW/BLOCK result (never ALLOW; not an authorization) before a side-effecting agent action runs.

## Output

An advisory result of either REVIEW or BLOCK (never ALLOW) indicating whether the proposed side-effecting agent action should be held for human review or outright blocked, along with supporting risk context. This is an advisory output only, not an authorization decision.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "GET"
     ]
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "action_type": {
       "type": "string",
       "enum": [
        "tool_call",
        "shell",
        "deploy",
        "dns",
        "email",
        "mcp_call",
        "wallet",
        "x402_purchase",
        "file_write",
        "browser"
       ],
       "description": "Side-effecting action the agent wants to run.",
       "example": "deploy"
      },
      "target": {
       "type": "string",
       "minLength": 1,
       "maxLength": 500,
       "description": "Human-readable target, command, endpoint, domain, or resource.",
       "example": "production worker"
      },
      "agent_id": {
       "type": "string",
       "pattern": "^[A-Za-z0-9._:-]{1,128}$",
       "description": "Caller-defined agent or principal id.",
       "example": "demo-agent"
      },
      "environment": {
       "type": "string",
       "enum": [
        "local",
        "dev",
        "staging",
        "production",
        "external"
       ],
       "description": "Execution environment for the action.",
       "example": "production"
      },
      "risk_score": {
       "type": "string",
       "pattern": "^[0-9]{1,3}$",
       "description": "Optional caller-supplied 0-100 risk score.",
       "example": "35"
      },
      "amount_usdc": {
       "type": "string",
       "pattern": "^[0-9]+(?:\\.[0-9]{1,6})?$",
       "description": "Optional payment, spend, or value at risk.",
       "example": "0.00"
      },
      "human_approval_ref": {
       "type": "string",
       "maxLength": 160,
       "description": "Human approval or ticket reference for elevated actions."
      }
     },
     "required": [
      "action_type",
      "target"
     ]
    }
   },
   "required": [
    "type",
    "method"
   ],
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "product": {
       "type": "string"
      },
      "schema_version": {
       "type": "string"
      },
      "decision": {
       "type": "string"
      },
      "decision_vocabulary": {
       
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/no-hands-ai-agentops-guard-action-preflight-01d7852f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nohands-coinbase-bazaar.bytoken2023.workers.dev](https://www.zero.xyz/host/nohands-coinbase-bazaar.bytoken2023.workers.dev/llms.txt)