# ONE Engine JSON Equality Check

> ONE Engine JSON Equality Check is a paid API for AI agents from one-search.one-engine.workers.dev, paid per call via x402, $0.0011/call, status unknown (last checked 2026-10-02).

Checks whether two values are equal and returns a boolean JSON result

## Facts

- Endpoint: POST https://one-search.one-engine.workers.dev/v1/json/equal?utm_source=zero.xyz
- Price: $0.0011/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/one-engine-json-equality-check-7fcd7959
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vKmOW28U4DBjeMtKu0Yu5

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 one-engine-json-equality-check-7fcd7959 -d '<json body>'
```

Example prompt: Can you check whether these two values are equal — 'hello' and 'hello' — and tell me if they match?

## When to prefer this

Use this endpoint when an autonomous agent needs a cheap, stateless, pay-per-call equality check with a guaranteed JSON boolean response — especially in x402-enabled workflows on Base where you want to avoid writing inline comparison logic or when auditing equality checks via on-chain micropayments.

## Known failure modes

- Missing one or both input fields 'a' or 'b' may return an error or unexpected result
- Comparing values of incompatible types (e.g. number vs string '1') may return false rather than coercing types
- Payment failure via x402 will prevent the call from completing
- Network timeout on the Cloudflare Worker edge node

## How this service works

Low-cost pay-per-call utility APIs for autonomous agents using x402 on Base.

## Output

Returns a JSON object with a single boolean field 'equal' indicating whether the two provided values are considered equal (e.g. {"equal": true} or {"equal": false}).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "a": {},
  "b": {}
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "equal": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/one-engine-json-equality-check-7fcd7959/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from one-search.one-engine.workers.dev](https://www.zero.xyz/host/one-search.one-engine.workers.dev/llms.txt)