# Code Explainer — Plain English via x402

> Code Explainer — Plain English via x402 is a paid API for AI agents from linked-aimed-reproduced-changing.trycloudflare.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).

Accepts a code snippet and returns a plain-English explanation of what it does, paid per call via x402.

## Facts

- Endpoint: POST https://linked-aimed-reproduced-changing.trycloudflare.com/v1/coder/explain?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/code-explainer-plain-english-via-x402-b5f4c0b9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_jqS9BAwSqlIH1wihAZfXD

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 code-explainer-plain-english-via-x402-b5f4c0b9 -d '<json body>'
```

Example prompt: Can you explain what this code does in plain English? Here's the snippet: `def fib(n): return n if n <= 1 else fib(n-1) + fib(n-2)`

## When to prefer this

Choose this endpoint when you need a quick, pay-per-use plain-English explanation of a code snippet without requiring a full LLM API subscription. Ideal for agents assisting non-technical users, code review pipelines, or developer onboarding workflows where cost per call ($0.02 USDC) is acceptable and you want a focused explanation rather than code generation or debugging.

## Known failure modes

- Empty or missing code snippet causes unclear or generic response
- Very long code snippets may be truncated or partially explained
- Non-standard or obfuscated code may yield inaccurate explanations
- Payment failure via x402 returns 402 Payment Required before processing
- Malformed request body returns an error before explanation is generated

## How this service works

Explain code snippet in plain English (paste code in message).

## Output

A natural language explanation of the provided code snippet describing what it does, how it works, and the logic flow — returned as a text response suitable for non-technical readers or developers seeking clarity.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "usage": {
   "type": "object"
  },
  "choices": {
   "type": "array"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/code-explainer-plain-english-via-x402-b5f4c0b9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from linked-aimed-reproduced-changing.trycloudflare.com](https://www.zero.xyz/host/linked-aimed-reproduced-changing.trycloudflare.com/llms.txt)