---
title: "Lookalike watch"
full: true
_openapi:
  method: POST
  toc: []
  structuredData:
    headings: []
    contents:
      - content: "Generates bounded candidate permutations (TLDs, typos, affixes, homoglyphs) and scans public DNS to detect registered lookalike domains that can send email."
_apiData:
  document: "https://reloop.sh/api/tools/openapi/json"
  operationData: [{"path":"/api/tools/v1/lookalike-watch","method":"post"}]
  parameterList: [{"name":"domain","type":"string","required":true,"description":"The primary domain name or URL to scan for phishing lookalikes.","location":"body","minLength":1,"maxLength":255,"example":"stripe.com"}]
  responseMap: {"200":{"description":"Response for status 200","schema":{"domain":"send.example.com","registrableDomain":"example_registrableDomain","resolvedAt":"2026-03-23T10:00:00.000Z","responseTimeMs":0,"verdict":"mail_twins","headline":"example_headline","summary":"example_summary","disclaimer":"example_disclaimer","scanned":0,"hits":[{"name":"Newsletter","unicodeName":"example_unicodeName","trick":"tld","registered":true,"mailCapable":true,"mx":true,"spf":true}],"nextStep":{"title":"example_title","body":"example_body","href":"example_href"}}},"400":{"description":"Response for status 400","schema":{"message":"Contact already exists","why":"A contact with this email already exists in your organization.","fix":"Use a different email address or update the existing contact instead.","link":"https://reloop.sh/docs/api/contacts"}},"429":{"description":"Response for status 429","schema":{"message":"Contact already exists","why":"A contact with this email already exists in your organization.","fix":"Use a different email address or update the existing contact instead.","link":"https://reloop.sh/docs/api/contacts"}},"500":{"description":"Response for status 500","schema":{"message":"Contact already exists","why":"A contact with this email already exists in your organization.","fix":"Use a different email address or update the existing contact instead.","link":"https://reloop.sh/docs/api/contacts"}}}
  codeSamples: []
---
> For the complete documentation index, see [llms-docs.txt](/llms-docs.txt) or the site index [llms.txt](/llms.txt). Full docs corpus: [llms-full-docs.txt](/llms-full-docs.txt). Prefer markdown URLs (append `.md`) for agent consumption. Product skill: [skill.md](/skill.md).


{/* This file was generated by the OpenAPI doc generator. Do not edit this file directly. Run `bun run generate:api-docs` to regenerate. */}

<APIPage />