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PlainText Approval Payload Explainer
x402
PlainText Approval Payload Explainer is a paid API for AI agents from plaintext.fizzl.eu, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-18).
Analyzes a pasted approval or permission JSON payload and returns a plain-language explanation with a SAFE, CAUTION, or RISK verdict
Price / call$0.03
Success—
StatusUnknown
How this service works
What would signing this allow? Paste a wallet approval, transaction or typed-data signature before someone signs it: returns a SAFE, CAUTION or RISK verdict with a short plain-language explanation of what it gives away
Output
A plain-language explanation of what the approval or permission payload authorizes, accompanied by a verdict of SAFE, CAUTION, or RISK indicating the potential danger level of signing or accepting the permission.
Example use cases
Reviewing a suspicious wallet approval
“I just got asked to sign this approval in my wallet and I'm not sure if it's legit — can you paste this JSON into PlainText and tell me if it's a SAFE, CAUTION, or RISK? {"spender":"0xdeadbeef","value":"unlimited","token":"WETH"}”
Auditing a dApp permission before connecting
“Before I connect to this new DeFi app, I want to understand what permissions it's asking for. Here's the permission payload it sent — can you explain it in plain English and give me a risk verdict?”
Checking an NFT marketplace approval
“This NFT marketplace is asking me to approve all my tokens before I can list — can you analyze this approval JSON and tell me if it's safe or if I should be worried? {"operator":"0x123...","approved":true,"type":"setApprovalForAll"}”
Technical details
Endpoint
POSThttps://plaintext.fizzl.eu/api/explain?utm_source=zero.xyzWhen to prefer
Use this endpoint when a user needs to understand an approval or permission payload in human-readable terms before signing or accepting it — especially useful for blockchain wallet approvals, smart contract permissions, or any structured authorization request. Ideal when the user is non-technical and needs a plain-language risk assessment rather than raw data parsing. Prefer this over generic LLM summarization when you specifically need a structured SAFE/CAUTION/RISK verdict.
Side effects
- Payload exceeds 5000 character limit — returns error
- Malformed or non-JSON input — parsing failure
- Unrecognized payload format — may return low-confidence explanation
- Network timeout — no verdict returned
- Missing 'data' field in request body — validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| data | object | Approval/permission JSON payload to explain (max 5000 characters) |
Tags
x402
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