# x402 Agent Wallet Tools – Wallet Signing Safety Pack

> x402 Agent Wallet Tools – Wallet Signing Safety Pack is a paid API for AI agents from x402-wallet.558686.xyz, paid per call via x402, $0.018/call, status unknown (last checked 2026-09-13).

Returns a buyer-side wallet safety control pack covering EIP-712 signature risk, ERC20 allowance risk, Permit/Permit2 approvals, transaction simulation summaries, spend guard policy, receipt gate enforcement, and private-key boundary rules for an agent app on a given chain.

## Facts

- Endpoint: GET https://x402-wallet.558686.xyz/v1/tools/wallet-signing-safety-pack
- Price: $0.018/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-agent-wallet-tools-wallet-signing-safety-pack-bd957005
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dDdphyYAlNtOKYWawY2ou

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 x402-agent-wallet-tools-wallet-signing-safety-pack-bd957005
```

Example prompt: Run the wallet signing safety pack for my app 'agent-runner' on Base (chain ID 8453) with a max spend of $0.05 per call, and tell me what signature risk controls, spend guard policies, and private-key boundary rules I should enforce.

## When to prefer this

Choose this endpoint when an AI agent needs a consolidated, structured wallet safety policy pack before executing on-chain transactions — particularly when you need EIP-712 risk assessment, ERC20 allowance review, Permit2 approval rules, spend guard limits, and private-key boundary enforcement all in one call. Prefer it over building individual checks piecemeal when operating on EVM chains with an autonomous agent wallet.

## Known failure modes

- Missing or invalid chainId returns an error or empty controls
- Unknown appName may return default/empty policy set
- maxPerCallUsd of zero or negative may cause validation rejection
- Network or payment failure (x402 $0.018 USDC required per call) returns 402 Payment Required
- Unsupported chainId may return empty boundaries object

## How this service works

A buyer-side control console for signature risk, EIP-712 review, transaction decoding, ERC20 allowance risk, Permit/Permit2 approvals, transaction simulation summaries, spend guard policy, receipt gate enforcement, and private-key boundaries.

## Output

A JSON object containing: a 'controls' array of active wallet safety controls, a 'boundaries' object defining private-key and signing boundaries, a 'copyPastePolicy' string describing clipboard/copy-paste rules, a 'privateKeysAccepted' boolean, and metadata fields (tool name, route, project, deterministic flag). Summarizes all relevant spend guard, EIP-712, ERC20 allowance, Permit/Permit2, transaction simulation, and receipt gate policies for the given app and chain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "additionalProperties": true
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "to": {
       "type": "string",
       "maxLength": 80
      },
      "data": {
       "type": "string",
       "maxLength": 20000,
       "minLength": 2
      },
      "json": {
       "type": "string",
       "maxLength": 50000,
       "minLength": 2
      },
      "text": {
       "type": "string",
       "maxLength": 50000,
       "minLength": 2
      },
      "chain": {
       "type": "string",
       "maxLength": 80
      },
      "value": {
       "oneOf": [
        {
         "type": "string"
        },
        {
         "type": "number"
        },
        {
         "type": "object",
         "additionalProperties": true
        }
       ]
      },
      "target": {
       "type": "string",
       "maxLength": 80
      },
      "calldata": {
       "type": "string",
       "maxLength": 20000,
       "minLength": 2
      },
      "typedData": {
       "oneOf": [
        {
         "type": "object",
         "additionalProperties": true
        },
        {
         "type": "string",
         "maxLength": 50000,
         "minLength": 2
        }
       ]
      },
      "typed_data": {
       "oneOf": [
        {
         "type": "object",
         "additionalProperties": true
        },
        {
         "type": "string",
         "maxLength": 50000,
         "minLength": 2
        }
       ]
      },
      "quote_asset": {
       "type": "string",
       "maxLength": 120
      },
      "buyer_intent": {
       "type": "string",
       "maxLength": 240
      },
      "quote_pay_to": {
       "type": "string",
       "maxLength": 80
      },
      "quote_scheme": {
       "type": "string",
       "maxLength": 40
      },
      "payment_quote": {
       "type": "object",
       "additionalProperties": true
      },
      "quote_network": {
       "type": "string",
       "maxLength": 80
      },
      "known_addresses": {
       "type": "object",
       "additionalProperties": {
        "type": "strin
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tool": "wallet-signing-safety-pack",
  "input": {
   "appName": "agent-runner",
   "chainId": 8453,
   "maxPerCallUsd": 0.05
  },
  "route": "/v1/tools/wallet-signing-safety-pack",
  "result": {
   "controls": [],
   "boundaries": {},
   "copyPastePolicy": "copyPastePolicy_example",
   "privateKeysAccepted": true
  },
  "project": "x402-agent-wallet-tools",
  "deterministic": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-agent-wallet-tools-wallet-signing-safety-pack-bd957005/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-wallet.558686.xyz](https://www.zero.xyz/host/x402-wallet.558686.xyz/llms.txt)