# B2B Enrichment Documentation > Documentation for B2B Enrichment ## Get Started: WELCOME - [B2B Enrichment Docs](https://doc.b2b-enrichment.com/docs/getting-started.md): Welcome to the B2B-Enrichment Documentation! Here, you'll find everything you need to seamlessly integrate our powerful real-time APIs into your projects. Whether you're a seasoned developer or just… ## Get Started: GET STARTED - [First Steps](https://doc.b2b-enrichment.com/docs/first-steps.md): Welcome to B2B-Enrichment! We provide powerful real-time APIs designed to meet the needs of data science, AI, market research, and market intelligence applications. This guide will help you get… - [Authentication](https://doc.b2b-enrichment.com/docs/authentication.md): For authorization, B2B-Enrichment requires you to include your API key in the `X-TOKEN` header for each request. Below are examples demonstrating how to set this up in different programming languages. ## Get Started: QUOTAS & LIMITS - [Rate Limits](https://doc.b2b-enrichment.com/docs/rate-limits.md): At B2B-Enrichment, we manage API usage through rate limits to ensure fair access and optimal performance for all users. This document outlines the key concepts and terminology to help you understand… - [Customizing Quotas](https://doc.b2b-enrichment.com/docs/customizing-quotas.md): At B2B-Enrichment, we offer flexible options for users who need higher rate limits (concurrency) than the default provided. By default, when you sign up, each service assigns its default concurrency… ## API Reference: B2B-Enrichment - Profile - [Fetch Profile](https://doc.b2b-enrichment.com/reference/profile-1.md): This endpoint retrieves the details of a person or company profile based on the profile URL.

The header `Content-Type: application/json` must be included in the request. - [Fetch Profile V2](https://doc.b2b-enrichment.com/reference/profile-v2.md): This endpoint retrieves enriched and structured profile data for a person or company based on the profile URL. Compared to version 1, the updated version returns person profile sections in a… - [Fetch Bulk Profiles](https://doc.b2b-enrichment.com/reference/profiles-bulk-1.md): This endpoint enables the retrieval of multiple person or company profiles based on their entity URNs.

The header `Content-Type: application/json` must be included in the request. - Profile Details - [Fetch Profile Details With Pagination](https://doc.b2b-enrichment.com/reference/profile-details-1.md): This endpoint retrieves detailed sections of a person profile, including education, patents, certifications, etc., in a paginated format based on the profile URL. It serves to access supplementary… - [Fetch follower / Connection Counts](https://doc.b2b-enrichment.com/reference/profile-social-metrics.md): This endpoint retrieves social metrics of a profile, such as follower and connection counts.

Data is served from our database and was collected within the last 30 days, rather than being… - Recommendations - [Fetch Recommendations of a Profile](https://doc.b2b-enrichment.com/reference/recommendations-1.md): This endpoint retrieves the recommendations given to or received by a person profile based on the profile URL.

The header `Content-Type: application/json` must be included in the request. - Activities - [Fetch Profile Activities V2](https://doc.b2b-enrichment.com/reference/activities-v2.md): This endpoint retrieves recent activities of a profile, including posts, comments, and reactions, based on the entity URN.

The header `Content-Type: application/json` must be included in the… - Posts - [Fetch Post Details](https://doc.b2b-enrichment.com/reference/post-details.md): This endpoint retrieves details of a post, based on the post URN or URL. - [Fetch Post Activities](https://doc.b2b-enrichment.com/reference/posts-1.md): This endpoint retrieves comments or reactions associated with a post, based on the post URN.

The header `Content-Type: application/json` must be included in the request. - [Post Keyword Search](https://doc.b2b-enrichment.com/reference/post-keyword-search-1.md): Through this endpoint, posts can be filtered by keyword.

The header `Content-Type: application/json` must be included in the request. - Personality Analysis - [Fetch Personality Analysis of a Single Person](https://doc.b2b-enrichment.com/reference/personality-analysis-2.md): This endpoint analyzes the skills, headline, and other publicly available data of a profile, returning a personality analysis based on the profile URL.

The header `Content-Type:… - People Search - [People Search API (V2)](https://doc.b2b-enrichment.com/reference/people-search-1.md): This endpoint searches for individuals based on account and/or contact filters (such as industry, domain, or location) across more than 400 million enriched, verified, and active profiles.

… - Reverse People Lookup - [Reverse People Lookup API](https://doc.b2b-enrichment.com/reference/people-reverse-lookup.md): This endpoint searches for people based on contact information such as email addresses or phone numbers.
The `kind` parameter specifies the type of search (e.g., CONTACT for email/phone… - Mobile Phone Finder - [Mobile Phone Finder API](https://doc.b2b-enrichment.com/reference/people-mobile-phone-finder.md): This endpoint searches for phone numbers associated with people based on different search criteria.
Search Options:
    • LinkedIn… - [Mobile Phone Finder API (V2 - Clay Compatible)](https://doc.b2b-enrichment.com/reference/people-mobile-phone-finder-v2.md): V2 of the Mobile Phone Finder — Clay-compatible. Behaves exactly like /people/mobile-phone-finder, except that when no person or phone is found it returns HTTP… - Similarity Search - [Similarity Search API](https://doc.b2b-enrichment.com/reference/similarity.md): This endpoint searches for companies similar to a specified company based on its profile URL and offers additional filters such as location and employee size.

The header `Content-Type:… - Email - [Email Finding](https://doc.b2b-enrichment.com/reference/email-finding.md): This endpoint initiates an email search (including catch-all emails) for a list of individuals, based on the supplied first name, last name, and domain. Upon completion, the results will be delivered… - [Email Finding Inquiry](https://doc.b2b-enrichment.com/reference/email-finding-inquiry.md): This endpoint returns the result of an email finding request based on its ID.

The header `Content-Type: application/json` must be included in the request. - [Email Finding Statistics](https://doc.b2b-enrichment.com/reference/email-finding-statistics.md): This endpoint returns the email finding process statistics (total, success, failed, found) based on its ID.

The header `Content-Type: application/json` must be included in the request. - [Email Finding Webhook](https://doc.b2b-enrichment.com/reference/email-finding-webhook.md): The user must implement the webhook on their side. After processing the email-finding request, the system will automatically invoke the user's webhook.

The header `Content-Type:… - [Email Verification](https://doc.b2b-enrichment.com/reference/email-finding-verification.md): This endpoint verifies the validity and deliverability of the provided email addresses (including catch-all emails). The results will be sent to your designated webhook.

The header… - [Email Verification Inquiry](https://doc.b2b-enrichment.com/reference/email-verification-inquiry.md): This endpoint returns the result of an email verification request based on its ID.

The header `Content-Type: application/json` must be included in the request. - [Email Verification Statistics](https://doc.b2b-enrichment.com/reference/email-verification-statistics.md): This endpoint returns the email verification process statistics (total, success, failed, found) based on its ID.

The header `Content-Type: application/json` must be included in the request. - [Email Verification Webhook](https://doc.b2b-enrichment.com/reference/email-verification-webhook.md): The user must implement the webhook on their side. After processing the email-verification request, the system will automatically invoke the user's webhook.

The header `Content-Type:… - Credit - [Fetch Your Credit](https://doc.b2b-enrichment.com/reference/credits.md): This endpoint retrieves the number of remaining credits in your account.

The header `Content-Type: application/json` must be included in the request.