# Axon Smart Contract Explainer

> Axon Smart Contract Explainer is a paid API for AI agents from axonx.vercel.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Returns an AI-generated plain-English explanation of a smart contract given its chain ID and contract address

## Facts

- Endpoint: GET https://axonx.vercel.app/api/explain/%7Bchain%7D/%7Baddress%7D
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/axon-smart-contract-explainer-eef5e7b0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_m9R1Auo1N5lScEMP55ATR

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 axon-smart-contract-explainer-eef5e7b0
```

Example prompt: Can you explain what the smart contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Ethereum mainnet (chain 1) actually does — like what its purpose is and how it works?

## When to prefer this

Use this endpoint when you need a human-readable explanation of what a specific smart contract does, given only its chain and address. Ideal for due diligence, onboarding users unfamiliar with contracts, or quickly understanding a DeFi protocol's logic without reading Solidity. Prefer this over generic LLM queries because it fetches on-chain contract data directly before generating the explanation.

## Known failure modes

- Invalid or non-existent contract address returns error
- Unsupported chain ID returns error
- Payment not provided or failed x402 micropayment returns 402 Payment Required
- Contract source not verified on-chain may result in limited explanation
- Network timeout or RPC failure for the specified chain

## How this service works

Axon provides AI-powered crypto intelligence endpoints covering token research, market analysis, contract auditing, sentiment tracking, news summarization, portfolio advice, deep research, text translation, language detection, SEO content generation, and contract explanation. All analytical endpoints require x402 micropayment on Base.

## Output

A JSON object containing the chain ID, contract address, and a plain-English AI-generated explanation describing the contract's purpose, key functions, and behavior.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "chain": "1",
  "address": "0x...",
  "explanation": "..."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/axon-smart-contract-explainer-eef5e7b0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from axonx.vercel.app](https://www.zero.xyz/host/axonx.vercel.app/llms.txt)