# SiteSignal Competitor Comparison

> SiteSignal Competitor Comparison is a paid API for AI agents from phases-prot-shine-royal.trycloudflare.com, paid per call via x402, $0.1/call, status down (last checked 2026-09-15).

Generates a symmetric, source-linked public-website evidence comparison between two organizations without fabricating rankings or claims.

## Facts

- Endpoint: GET https://phases-prot-shine-royal.trycloudflare.com/x402/competitor-comparison
- Price: $0.1/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sitesignal-competitor-comparison-ab8e513b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_h8IQ8eHU5wGRkNbD3mHN5

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 sitesignal-competitor-comparison-ab8e513b
```

Example prompt: Can you compare Stripe's website (https://stripe.com) against Braintree's (https://www.braintreepayments.com) for a payment processor selection decision? Focus on developer documentation quality and make sure everything is sourced back to their actual pages.

## When to prefer this

Choose this endpoint when you need an objective, source-linked side-by-side comparison of two organizations based solely on their publicly visible websites — especially for vendor selection, competitive positioning, or due diligence scenarios where fabricated rankings are unacceptable. Prefer it over generic web scrapers when the output must be structured as a comparison with evidence attribution, and over LLM-only analysis when grounding in actual source pages matters.

## Known failure modes

- One or both URLs are unreachable or return non-public content, resulting in incomplete comparison data
- URLs point to non-website resources (e.g. raw files, login walls) that cannot yield meaningful evidence
- decisionContext is too vague to produce a focused comparison
- Rate limiting or Cloudflare access restrictions block content retrieval
- Insufficient public content on one site skews the symmetry of the comparison

## How this service works

Build a symmetric, source-linked public-website evidence comparison for two organizations without inventing rankings or claims.

## Output

A structured, symmetric comparison report with source-linked evidence for both organizations drawn from their public websites. Each claim is tied back to an observable source rather than invented. The report reflects the specified decision context and optional focus area, covering signals like messaging, credibility indicators, technical depth, and other publicly visible attributes.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "primaryUrl",
      "comparisonUrl",
      "decisionContext"
     ],
     "properties": {
      "focus": {
       "type": "string"
      },
      "primaryUrl": {
       "type": "string",
       "format": "uri"
      },
      "comparisonUrl": {
       "type": "string",
       "format": "uri"
      },
      "decisionContext": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sitesignal-competitor-comparison-ab8e513b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from phases-prot-shine-royal.trycloudflare.com](https://www.zero.xyz/host/phases-prot-shine-royal.trycloudflare.com/llms.txt)