> ## Documentation Index
> Fetch the complete documentation index at: https://apidoc.cufinder.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Contact Lookalike Finder API

> The Contact Lookalike Finder API returns 25 people who resemble a given contact. Pass a person's LinkedIn URL or email and get back similar profiles with their role, company, and firmographics — perfect for expanding from one great lead to a whole list.

export const SDKsList = ({className = ""}) => {
  const sdks = [{
    href: "https://github.com/CUFinder/cufinder-ts",
    title: "Typescript",
    description: "The Official TypeScript SDK for CUFinder APIs",
    imgSrc: "/images/logos/typescript.svg"
  }, {
    href: "https://github.com/CUFinder/cufinder-py",
    title: "Python",
    description: "The Official Python SDK for CUFinder APIs",
    imgSrc: "/images/logos/python.svg"
  }, {
    href: "https://github.com/CUFinder/cufinder-go",
    title: "Go",
    description: "The Official Go SDK for CUFinder APIs",
    imgSrc: "/images/logos/go.svg"
  }, {
    href: "https://github.com/CUFinder/cufinder-rust",
    title: "Rust",
    description: "The Official Rust SDK for CUFinder APIs",
    imgSrc: "/images/logos/rust.svg",
    darkRevert: true
  }, {
    href: "https://github.com/CUFinder/cufinder-ruby",
    title: "Ruby",
    description: "The Official Ruby SDK for CUFinder APIs",
    imgSrc: "/images/logos/ruby.svg"
  }];
  return <div className={`divide-y divide-slate-200 divide-solid ${className}`}>
      <h2>CUFinder Official SDKs</h2>
      <ul className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-y-4">
        {sdks.map(sdk => <li key={sdk.title}>
            <a href={sdk.href} target="_blank" className="flex items-center gap-4">
              <img src={sdk.imgSrc} alt={sdk.title} noZoom width={100} height={100} className={`w-12 !my-0 ${sdk.darkRevert ? "dark:invert-100" : ""}`} />
              <div>
                <div>
                  <p className="text-sm text-gray-800 dark:text-gray-200">{sdk.title}</p>
                </div>
                <div>
                  <p className="text-xs text-gray-500 leading-[1.2rem]">
                    {sdk.description}
                  </p>
                </div>
              </div>
            </a>
          </li>)}
      </ul>
    </div>;
};

## Common Use Cases

Give one great contact and get 25 more who look just like them.

* **Prospecting:** Expanding from a best customer to similar people.
* **Account-Based Marketing:** Finding more of the right personas in a segment.
* **Recruiting:** Sourcing candidates similar to a strong hire.
* **List Building:** Growing outreach lists from a single seed profile.

<Badge color="blue" size="lg" icon="star" className="mt-3">
  Credit usage is 10 per request (returns up to 25 similar contacts).
</Badge>

## Attributes

<ParamField body="query" type="string" required>
  A person's LinkedIn URL or email address.
</ParamField>

## Response

<CodeGroup>
  ```json Response theme={null}
  {
      "status": 1,
      "data": {
          "confidence_level": 97,
          "query": {
              "query": "linkedin.com/in/iain-mckenzie"
          },
          "profiles": [
              {
                  "first_name": "aidan",
                  "last_name": "bienstock",
                  "full_name": "aidan bienstock",
                  "linkedin_url": "linkedin.com/in/aidan-bienstock-159536239",
                  "summary": null,
                  "followers_count": 0,
                  "facebook": null,
                  "twitter": null,
                  "avatar": "media.cufinder.io/person_profile/aidan-bienstock-159536239",
                  "country": "canada",
                  "state": null,
                  "city": null,
                  "job_title": "engineering project manager",
                  "job_title_categories": [
                      "Engineering & Technical",
                      "Operations",
                      "Sales"
                  ],
                  "company_name": "5c",
                  "company_linkedin": "linkedin.com/company/5cai",
                  "company_website": "https://5c.ai",
                  "company_size": "51-200",
                  "company_industry": "technology, information and internet",
                  "company_facebook": null,
                  "company_twitter": null,
                  "company_country": null,
                  "company_state": null,
                  "company_city": null,
                  "experiences": [
                      {
                          "company": {
                              "name": "5c",
                              "size": "51-200",
                              "id": "5cai",
                              "founded": "2025",
                              "industry": "technology, information and internet",
                              "location": null,
                              "linkedin_url": "linkedin.com/company/5cai",
                              "linkedin_id": "105784960",
                              "facebook_url": null,
                              "twitter_url": null,
                              "website": "https://5c.ai"
                          },
                          "title": {
                              "name": "engineering project manager",
                              "role": null,
                              "sub_role": null,
                              "levels": []
                          },
                          "start_date": "2026-07",
                          "end_date": "Present",
                          "location_names": [],
                          "is_primary": true,
                          "summary": null
                      }
                  ],
                  "educations": [
                      {
                          "school": {
                              "name": "mcgill university",
                              "type": null,
                              "id": null,
                              "location": {
                                  "name": null,
                                  "locality": null,
                                  "region": null,
                                  "country": null,
                                  "continent": null
                              },
                              "linkedin_url": "linkedin.com/school/mcgill-university",
                              "facebook_url": null,
                              "twitter_url": null,
                              "linkedin_id": null,
                              "website": null,
                              "domain": null
                          },
                          "start_date": "2024-06",
                          "end_date": "Present",
                          "gpa": null,
                          "degrees": [],
                          "majors": [],
                          "minors": [],
                          "summary": null
                      }
                  ],
                  "interests": [],
                  "skills": [],
                  "certifications": [],
                  "projects": [],
                  "publications": [],
                  "recommendations": [],
                  "service_offers": [],
                  "volunteering": [],
                  "languages": []
              }
          ],
          "credit_count": 4746
      }
  }
  ```
</CodeGroup>

<SDKsList className="mt-20" />

<div className="mt-20">
  ## Contact Lookalike Finder API Typescript SDK

  <CodeGroup>
    ```typescript Request theme={null}
    import { Cufinder } from '@cufinder/cufinder-ts';

    const client = new Cufinder('your-api-key-here');

    const result = await client.clf('linkedin.com/in/iain-mckenzie');
    console.log(result);
    ```
  </CodeGroup>
</div>

<div className="mt-12">
  ## Contact Lookalike Finder API Python SDK

  <CodeGroup>
    ```python Request theme={null}
    from cufinder import Cufinder

    client = Cufinder('your-api-key-here')

    result = client.clf('linkedin.com/in/iain-mckenzie')
    print(result)
    ```
  </CodeGroup>
</div>

<div className="mt-12">
  ## Contact Lookalike Finder API Go SDK

  <CodeGroup>
    ```go Request theme={null}
    package main

    import (
        "fmt"
        "log"

        "github.com/cufinder/cufinder-go"
    )

    func main() {
        sdk := cufinder.NewSDK("your-api-key-here")

        result, err := sdk.CLF("linkedin.com/in/iain-mckenzie")
        if err != nil {
            log.Fatal(err)
        }
        fmt.Println(result)
    }
    ```
  </CodeGroup>
</div>

<div className="mt-12">
  ## Contact Lookalike Finder API Ruby SDK

  <CodeGroup>
    ```ruby Request theme={null}
    require 'cufinder_ruby'

    client = Cufinder::Client.new(api_key: 'your-api-key-here')

    result = client.clf('linkedin.com/in/iain-mckenzie')
    puts result
    ```
  </CodeGroup>
</div>

<div className="mt-12">
  ## Contact Lookalike Finder API Rust SDK

  <CodeGroup>
    ```rust Request theme={null}
    use cufinder_rust::CufinderSDK;

    #[tokio::main]
    async fn main() -> Result<(), Box<dyn std::error::Error>> {
        let sdk = CufinderSDK::new("your-api-key-here".to_string())?;

        let result = sdk.clf("linkedin.com/in/iain-mckenzie").await?;
        println!("{:?}", result);
        Ok(())
    }
    ```
  </CodeGroup>
</div>

## Related APIs

<CardGroup cols={2}>
  <Card title="Person Search" icon="search" href="/apis/person-search">
    Search 1B+ profiles with combined filters.
  </Card>

  <Card title="Person Enrichment" icon="user" href="/apis/person-enrichment">
    Enrich a person with full contact data.
  </Card>

  <Card title="Company Lookalikes Finder" icon="copy" href="/apis/company-lookalikes-finder">
    Discover companies similar to a target.
  </Card>

  <Card title="Reverse Email Lookup" icon="mail-search" href="/apis/reverse-email-lookup">
    Identify the person behind an email address.
  </Card>
</CardGroup>