# Citable.run Cited Prompts Lookup

> Citable.run Cited Prompts Lookup is a paid API for AI agents from citable.run, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Returns the AI prompts a given domain is already cited for, along with the answer snippet and cited URL, across ChatGPT and/or Google AI.

## Facts

- Endpoint: GET https://citable.run/v1/cited-prompts
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/citable-run-cited-prompts-lookup-77cec5dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AerLnh2VzhjnVzQmPG6HU

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 citable-run-cited-prompts-lookup-77cec5dd
```

Example prompt: What AI prompts is techcrunch.com already being cited for — check both ChatGPT and Google and give me up to 20 results with the answer snippets and URLs.

## When to prefer this

Use this endpoint when you need to discover which specific AI prompts or questions a given domain is already being cited as a source for in ChatGPT or Google AI answers. It is ideal for brand monitoring, SEO competitive analysis, and identifying content opportunities based on where AI systems are already linking to a domain. Prefer this over general web analytics or backlink tools when the specific focus is generative AI citation tracking rather than traditional search ranking.

## Known failure modes

- Domain not found or has no observed AI citations — returns empty list
- Invalid domain format — missing or malformed 'domain' query parameter returns validation error
- Limit out of range — values outside 1–50 may be rejected or clamped
- Platform filter with invalid value — unrecognized platform string may return error or default to both
- Payment failure — x402 payment not completed results in 402 response before data is returned

## How this service works

The observed AI prompts a domain is already cited for, with the answer snippet and the cited URL.

## Output

A list of AI prompts (up to 50) that the specified domain has been cited in, each entry including the prompt text, the AI-generated answer snippet referencing the domain, the cited URL, and the platform (ChatGPT and/or Google) where the citation was observed.

## 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": [
      "domain"
     ],
     "properties": {
      "limit": {
       "type": "string",
       "description": "prompts to return, 1–50 (default 10)"
      },
      "domain": {
       "type": "string",
       "description": "hostname to look up, e.g. example.com — or a competitor's"
      },
      "platform": {
       "type": "string",
       "description": "chat_gpt or google (default: both)"
      }
     }
    }
   },
   "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/citable-run-cited-prompts-lookup-77cec5dd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from citable.run](https://www.zero.xyz/host/citable.run/llms.txt)