Index onlineMerchant portal
Api Endpoint

nexuseval.vercel.app

Marketing copy quality gate and pre-publish copy review for autonomous agents about to publish or send ad, landing-page, email, CTA, campaign or GTM copy. Returns a fast PASS/WARN/BLOCK verdict, claim-risk flags and prioritized fixes before release. Standard machine terms: https://nexuseval.vercel.app/terms.json 2026-08-29-v2.

Open interactive test console

Offering

Provider
nexuseval.vercel.app
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Business And Commerce
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://nexuseval.vercel.app/api/gate
MIME type
application/json
First seen
2026-10-16T02:07:52.569Z
Last seen
Tags
None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x756A9769725aF78F81fb0A9b66300aBb64A0551c"
  }
]

Observed health

Status
Healthy
Latest latency
50 ms
Average latency
236 ms
HTTP status
200
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "body": {
    "cta": "Get evaluation",
    "copy": "Evaluate positioning, proof, messaging and CTA quality before campaign launch.",
    "audience": "B2B SaaS marketing leaders",
    "headline": "Improve campaign conversion before launch",
    "objective": "lead generation"
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
}

Output schema

{
  "type": "object",
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "required": [
    "input"
  ],
  "properties": {
    "input": {
      "type": "object",
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "properties": {
        "body": {
          "type": "object",
          "required": [
            "copy"
          ],
          "properties": {
            "cta": {
              "type": "string",
              "description": "Primary call to action"
            },
            "copy": {
              "type": "string",
              "description": "Marketing copy or campaign material to evaluate"
            },
            "audience": {
              "type": "string",
              "description": "Target audience"
            },
            "headline": {
              "type": "string",
              "description": "Headline, subject line or core message"
            },
            "objective": {
              "type": "string",
              "description": "Primary marketing objective"
            }
          }
        },
        "type": {
          "type": "string",
          "const": "http"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        }
      },
      "additionalProperties": false
    },
    "output": {
      "type": "object",
      "required": [
        "type"
      ],
      "properties": {
        "type": {
          "type": "string"
        },
        "example": {
          "type": "object"
        }
      }
    }
  }
}