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NexusEval Marketing Preflight
x402
NexusEval Marketing Preflight is a paid API for AI agents from nexuseval.vercel.app, paid per call via x402, $9.99/call, status unknown (last checked 2026-09-14).
Evaluates up to 50 marketing campaign assets (ads, emails, landing pages, GTM materials) for quality and readiness before publication, returning GO/NO-GO decisions with risk patterns and prioritized actions.
Price / call$9.99
Success—
StatusUnknown
How this service works
x402-native pre-publish Marketing Quality Gateway for autonomous AI agents.
Output
Returns a JSON object with the package type, asset count, an average quality score (0-100), a list of weakest assets with details, an overall GO/NO-GO decision string, top risk patterns found across the portfolio, and a prioritized list of actions to take before publishing.
Example use cases
Email campaign pre-send audit
“Before we send this email blast tomorrow, run a marketing preflight on it — the headline is 'Your Exclusive Offer Ends Tonight', the copy is 'Get 30% off our annual plan when you upgrade before midnight', the CTA is 'Claim My Discount', targeting existing free-tier users, objective is upsell conversion.”
Multi-ad portfolio launch check
“We have 10 ad variants going live Friday for our product launch — can you run them all through a campaign quality audit and tell me which ones are weakest and whether we have a GO overall? I'll paste the headlines, copy, CTAs, and audience details for each.”
Landing page GTM readiness review
“We're launching a new GTM campaign next week and I need a preflight evaluation on our landing page: headline is 'The Fastest Way to Close Enterprise Deals', copy explains our sales intelligence tool, CTA is 'Book a Demo', audience is VP Sales at mid-market companies, objective is demo bookings — give me a score and any risk patterns to fix.”
Technical details
Endpoint
POSThttps://nexuseval.vercel.app/api/evaluate/campaignWhen to prefer
Choose this endpoint when you need an automated, pre-publication quality gate for marketing assets — especially in agentic workflows where a human reviewer is not in the loop. It is ideal for batch evaluation of up to 50 assets at once with a single clear GO/NO-GO signal, making it suited for campaign automation pipelines. Prefer this over generic LLM prompting when you need structured, consistent, scored output with risk patterns and prioritized actions that downstream agents can act on.
Side effects
- Empty or missing 'items' array returns a validation error
- Submitting more than 50 items exceeds the maxItems limit and may be rejected
- Malformed asset objects (missing required fields) may result in incomplete scoring
- Payment failure via x402 protocol returns 402 status and no evaluation result
- Network timeout for large batches of 50 complex assets
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| items | array | Up to 50 campaign, ad, email, landing-page or GTM assets for cross-asset QA. |
Output
Schema · Response
{
"type": "json",
"example": {
"package": "campaign_portfolio_audit",
"service": "NexusEval Marketing Preflight",
"assetCount": 10,
"averageScore": 82,
"weakestAssets": [],
"overallDecision": "GO",
"topRiskPatterns": [],
"prioritizedActions": []
}
}Tags
x402
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