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CiteGate Citation Check
x402
CiteGate Citation Check is a paid API for AI agents from mcp-x402.onrender.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-26).
Probes whether AI answer engines (e.g. Perplexity, ChatGPT, Gemini) cite a target domain when answering a specific question, returning per-engine CITED / MISSED / BLOCKED verdicts with evidence.
Price / call$0.05
Success—
StatusUnknown
How this service works
CiteGate citation check — best-effort single-shot probe of whether AI answer engines cite a target domain for a question (per-engine CITED / MISSED / BLOCKED with evidence; engines without a public server-rendered answer surface report BLOCKED, never a guessed verdict), $0.05 per accepted check
Output
A JSON response containing per-engine citation verdicts — each engine returns one of three statuses: CITED (the target domain was found as a source in the answer), MISSED (the engine answered but did not cite the domain), or BLOCKED (the engine has no public server-rendered answer surface and cannot be probed). Evidence snippets or source URLs are included where available.
Example use cases
Brand citation audit for SEO team
“Run a citation check to see if 'hubspot.com' gets cited by AI answer engines when someone asks 'what is inbound marketing' — I need the per-engine verdict and any evidence snippets.”
Competitor citation monitoring
“Check if our competitor's domain 'ahrefs.com' is being cited by AI engines for the question 'how do I do keyword research' — I want to see which engines are citing them.”
Content effectiveness validation
“I just published a new guide on 'healthline.com' about intermittent fasting. Can you probe whether AI answer engines are citing that domain when someone asks 'what is intermittent fasting and does it work'?”
Technical details
Endpoint
GEThttps://mcp-x402.onrender.com/gate/squeezeos/citegate/citation-check?utm_source=zero.xyzWhen to prefer
Choose CiteGate when you need a real, evidence-backed probe of whether a specific domain is being cited by live AI answer engines for a given question — not a simulated or estimated result. It is best suited for SEO professionals, brand managers, and content strategists who need per-engine citation accountability rather than aggregate statistics. Prefer this over generic web monitoring tools when the goal is specifically AI answer engine citation visibility.
Side effects
- Engine surface unavailable — returns BLOCKED rather than a guessed verdict
- Target domain not found in any engine — all engines return MISSED
- Malformed query parameters — missing target or question fields returns an error
- Rate limiting or payment failure — $0.05 USDC charge not processed
- Transient engine unavailability — engine probe times out and may return BLOCKED
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| outputrequired | object |
Tags
x402
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