# PlainText — Wallet Approval Explainer

> PlainText — Wallet Approval Explainer is a paid API for AI agents from smartcontractexplainer.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-13).

Looks up a wallet's live token and NFT approvals via GoPlus Security and returns a plain-language risk verdict (SAFE, CAUTION, or RISK) for non-technical users.

## Facts

- Endpoint: POST https://smartcontractexplainer.onrender.com/api/explain?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/plaintext-wallet-approval-explainer-61158003
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rDcVj6o8de4if7mcLzQoQ

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 plaintext-wallet-approval-explainer-61158003 -d '<json body>'
```

Example prompt: Can you check these token approval permissions from my wallet and tell me in plain English whether they're safe to sign — give me a SAFE, CAUTION, or RISK verdict and explain what they actually do?

## When to prefer this

Use this endpoint when a user needs to understand wallet token or NFT approvals in human-readable terms before signing, especially when they lack crypto knowledge. Prefer this over raw blockchain explorers or security APIs when the output needs to be non-technical and verdict-driven (SAFE/CAUTION/RISK). Ideal for consumer-facing agents that help users avoid phishing or malicious approvals.

## Known failure modes

- Missing or malformed 'data' field in request body returns an error
- GoPlus Security API unavailable or rate-limited causing lookup failure
- Unrecognized approval payload format resulting in inability to parse permissions
- Network timeout from GoPlus upstream causing delayed or empty response
- Payment of $0.05 USDC not completed causing 402 rejection before processing

## How this service works

Looks up a wallet's live token/NFT approvals via the GoPlus Security API and explains them in plain language for people with no crypto background.

## Output

Returns a JSON object with a 'verdict' field set to one of SAFE, CAUTION, or RISK, and an 'explanation' field containing a plain-language description of what the approval does and why it carries that risk level — written for users with no crypto background.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "data"
 ],
 "properties": {
  "data": {
   "type": "object",
   "description": "Arbitrary approval/permission JSON payload to explain"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "verdict",
  "explanation"
 ],
 "properties": {
  "verdict": {
   "enum": [
    "SAFE",
    "CAUTION",
    "RISK"
   ],
   "type": "string"
  },
  "explanation": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/plaintext-wallet-approval-explainer-61158003/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from smartcontractexplainer.onrender.com](https://www.zero.xyz/host/smartcontractexplainer.onrender.com/llms.txt)