# x402 Quote Comparator

> x402 Quote Comparator is a paid API for AI agents from phion.systems, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Normalizes and compares multiple x402 payment quotes to help agents select the best route or validate consistency across providers

## Facts

- Endpoint: POST https://phion.systems/v1/paid/trust/x402-quote-comparator
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-quote-comparator-9b066344
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_OhETYVYBGefebfn8KWvha

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 x402-quote-comparator-9b066344 -d '<json body>'
```

Example prompt: I just got three different x402 payment quotes for this API call — can you normalize and compare them so I know which one is actually cheapest and whether they're all valid?

## When to prefer this

Use this endpoint when an agent has collected multiple x402 quotes from different facilitators or routes and needs to objectively compare, normalize, or rank them before committing to a payment. Prefer it over manual inspection when quotes use different units, formats, or structures that need reconciliation.

## Known failure modes

- Malformed or non-x402 quote objects cause parsing errors
- Incompatible quote formats that cannot be normalized together
- Missing required quote fields leading to incomplete comparison
- Empty quotes array returning no result
- Network timeout on the phion.systems endpoint

## How this service works

Normalize and compare multiple x402 quotes

## Output

Returns normalized representations of the input x402 quotes along with a comparison result indicating differences, rankings, or equivalence — typically including a recommended quote and any anomalies detected across the set.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-quote-comparator-9b066344/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phion.systems](https://www.zero.xyz/host/phion.systems/llms.txt)