{
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    "title": "Broken Link Checker – Find 404s and Dead Links API",
    "description": "Pay per crawled page, not per link: crawl a site within robots.txt and check every link on each page for 404s, 5xx errors, DNS and TLS failures and redirects. Anti-bot and robots.txt refusals are never called broken. No personal data.",
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        "required": [
          "startUrls"
        ],
        "properties": {
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            "title": "Websites or pages",
            "type": "array",
            "description": "The sites to check, one per line: a domain (example.com) or a page address (https://www.example.com/blog). The crawl starts there and follows the links of the same site. Several addresses of one site are crawled together.",
            "items": {
              "type": "string"
            }
          },
          "maxPagesPerSite": {
            "title": "Pages to crawl per site",
            "minimum": 1,
            "maximum": 1000000,
            "type": "integer",
            "description": "How many pages of each site are read, breadth first from the start address. Every page read is one charged row; the links on it are checked for free. Start small (5 to 20) to see the result, then raise it.",
            "default": 50
          },
          "checkExternalLinks": {
            "title": "Check links to other websites",
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          },
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            "title": "Also check images",
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            "description": "Verify the address of every image (img tag) on the pages as well. Off by default: images multiply the number of requests.",
            "default": false
          },
          "onlyPagesWithBrokenLinks": {
            "title": "Only deliver pages with broken links",
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          },
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          },
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            "minimum": 0,
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          },
          "maxExternalHosts": {
            "title": "Maximum external websites to check",
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            "maximum": 100000,
            "type": "integer",
            "description": "A page that links to hundreds of other websites costs one robots.txt and one request for each of them. Links to websites beyond this number are counted as not checked.",
            "default": 1000
          },
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            "title": "Only new rows since the last run",
            "type": "boolean",
            "description": "Remember the rows already delivered to you (in a key-value store in your Apify account) and deliver only rows that appeared since the last run with the same state key. The first run delivers everything that matches; later runs cost only the new rows. Ideal for schedules.",
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          },
          "stateName": {
            "title": "State name",
            "type": "string",
            "description": "Name of the memory used by \"Only new rows\". Use a different name for each schedule or search (for example `stockholm-python`) so they do not share one memory.",
            "default": "default"
          },
          "notifyUrl": {
            "title": "Notify this URL when the run ends",
            "type": "string",
            "description": "A webhook address that receives one JSON POST with the number of new rows and links to the dataset: a Slack or Discord incoming webhook, a Make, n8n or Zapier catch hook, or your own endpoint. The message is also in the `text` (Slack) and `content` (Discord) fields."
          },
          "notifyWhenEmpty": {
            "title": "Notify also when there are no new rows",
            "type": "boolean",
            "description": "By default the notification is sent only when at least one row was delivered.",
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          },
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            "title": "Delay between requests to one host (ms)",
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            "maximum": 10000,
            "type": "integer",
            "description": "Default 1000 ms (one request per second to the same host; different hosts are checked in parallel). The Crawl-delay of a robots.txt is honoured up to 10 s. Checking your own site? 200 ms is the minimum.",
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                  "userAgent": {
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              "options": {
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              "defaultDatasetId": {
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