---
title: "The cited-by index: for ?url= a page or ?domain= a site, how often agents cited it through CrawlCheck (citation anchors, cite preflights), by how many distinct citing networks, how many distinct passages, and whether the quoted text is still on the page (latest recheck per anchor). Citer counts and agent names withheld below 3 citing networks"
method: GET
path: "/api/v1/cited-by"
---

# The cited-by index: for ?url= a page or ?domain= a site, how often agents cited it through CrawlCheck (citation anchors, cite preflights), by how many distinct citing networks, how many distinct passages, and whether the quoted text is still on the page (latest recheck per anchor). Citer counts and agent names withheld below 3 citing networks

`GET /api/v1/cited-by`

## Request

- Base URL: `https://crawlcheck.io`
- URL: `https://crawlcheck.io/api/v1/cited-by`
- Auth: none required

## Query parameters

- `url` string
- `domain` string

## Response `200`

crawlcheck-cited-by

- object, nullable
  - `kind` string, nullable
  - `v` number, nullable
  - `generated_at` string, nullable
  - `url` string, nullable
  - `cited` boolean, nullable
  - `citations` number, nullable
  - `distinct_citers` number, nullable
  - `citers_floor` number, nullable
  - `citers_published` boolean, nullable
  - `by_declared_agent` object, nullable
    - `ExampleResearchAgent/2.1` number, nullable
  - `first_cited` string, nullable
  - `last_cited` string, nullable
  - `anchors` number, nullable
  - `distinct_passages` number, nullable
  - `quoted_text` object, nullable
    - `still_present` number, nullable
    - `no_longer_present` number, nullable
    - `page_unreachable` number, nullable
    - `unchecked` number, nullable
    - `basis` string, nullable
  - `anchor_ids` string[], nullable
  - `anchor_url` string, nullable

## Other responses

- `400`: give url or domain

---

[API](https://skmtc.dev/crawlcheck/apis/crawlcheck-api.md) · [All operations](https://skmtc.dev/crawlcheck/apis/crawlcheck-api/llms.txt) · [OpenAPI document](https://skmtc.dev/crawlcheck/apis/crawlcheck-api/revisions/57acbd6d4489?raw)