REST API Quickstart

Call Cite42 directly over HTTP. One base URL, a Bearer key, JSON in and out. Query ChatGPT, Claude, Perplexity, and Gemini and get structured data back.

Base URL

All requests go to:

https://api.cite42.dev/v1

Authenticate with a Bearer token on every request (see Authentication). The same cite42_live_ key works for both REST and MCP.

Make your first call

One call across all four models — pick your language:

Get your API key
Create a key on the API keys page — it's shown once, so copy it now. You'll send it as a Bearer token on every request.

Make the call

One POST queries all four models and returns each answer with its sources.

# One POST queries all four models — answer + sources each.
$ curl https://api.cite42.dev/v1/search \
   -H "Authorization: Bearer $CITE42_API_KEY" \
   -H "Content-Type: application/json" \
   -d '{ "query": "best CRM for SaaS" }'

# Response — one entry per model, plus a billing block:
{
  "results": [
    { "model": "chatgpt", "ok": true, "answer": "...",
      "citations": [{ "url": "reddit.com/r/SaaS/..." }] }
    /* ...claude, perplexity, gemini... */
  ],
  "billing": { "cost": { "usd": "0.40" }, "balance": { "usd": "24.60" } }
}

Every billed response includes a billing block with the exact cost and remaining balance. See Search for the full response shape.

Endpoints

Five AI-model endpoints (billed per model queried): search, rankings, compare, citations, sentiment. Plus two flat-priced data endpoints (keywords, trends) and a free usage. Pick one from the sidebar for its params and example response.