# Versium Developer Portal Documentation

> Versium REACH APIs give you access to thousands of consumer contact data and insights.

## Guides
- [Versium REACH APIs](https://api-documentation.versium.com/docs/the-versium-api-landscape.md): Where to find all the things in the Versium REACH APIs
- [Get the Best Data with Versium](https://api-documentation.versium.com/docs/why-versium-apis.md): Discover how Versium APIs can provide you with precisely the data you require, precisely when and where you need it.
- [Get Started with Versium REACH APIs](https://api-documentation.versium.com/docs/start-building-with-versium.md): Get yourself up and running fast with the Versium API
- [Manage your API Key and Usage](https://api-documentation.versium.com/docs/manage-your-account.md): Find out how to reset your key, see how much data you're using, and upgrade for more data
- [Create and Delete API keys](https://api-documentation.versium.com/docs/create-and-delete-api-keys.md)
- [See how much data you're using](https://api-documentation.versium.com/docs/view-your-api-usage.md): Check how many matches you're using and how many you have left
- [API Best Practices](https://api-documentation.versium.com/docs/api-best-practices.md)
- [Tips for High-Quality Data](https://api-documentation.versium.com/docs/tips-for-high-quality-data.md): How to maximize your results
- [Personal-Identifiable Information (PII) and You](https://api-documentation.versium.com/docs/personally-identifiable-information-pii-and-you.md): How to use your data for good.
- [Find your API key](https://api-documentation.versium.com/docs/find-your-api-key.md): Not all keys that wander are lost
- [API Walkthroughs](https://api-documentation.versium.com/docs/api_walkthroughs.md): Some walkthroughs using the API that'll help you find your own path
- [Find Consumer Contact Information in cURL Walkthrough](https://api-documentation.versium.com/docs/find-consumer-contact-information-in-curl-walkthrough.md): Find contact information from a consumer name and postal code
- [Troubleshooting the API](https://api-documentation.versium.com/docs/troubleshooting-the-api.md): Get to the bottom of those pesky problems
- [No data returned](https://api-documentation.versium.com/docs/no-data-returned.md): It echoes
- [Frequently Asked Questions](https://api-documentation.versium.com/docs/frequently-asked-questions.md): If you don't find the answer you need, contact us. You may be the one to save others.

## API Reference
- [Versium REACH API Reference](https://api-documentation.versium.com/reference/welcome.md)
- [API Details](https://api-documentation.versium.com/reference/api-details.md)
- [Available Data](https://api-documentation.versium.com/reference/data-dictionary.md)
- [HTTP Status Codes](https://api-documentation.versium.com/reference/http-status-codes.md)
- [API Case Sensitivity](https://api-documentation.versium.com/reference/api-case-sensitivity.md)
- [Hashed Input Support](https://api-documentation.versium.com/reference/hashed-input-support.md)
- [API Rate Limit](https://api-documentation.versium.com/reference/api-rate-limit.md)
- [APIs Response Time](https://api-documentation.versium.com/reference/apis-response-time.md)
- [Common Inputs and API Parameters](https://api-documentation.versium.com/reference/common-api-inputs-and-options.md)
- [Common Outputs](https://api-documentation.versium.com/reference/common-outputs.md)
- [Authentication](https://api-documentation.versium.com/reference/authentication.md)
- [Suppression Lists](https://api-documentation.versium.com/reference/supression-lists.md)
- [Make Your First API Call](https://api-documentation.versium.com/reference/make-your-first-api-call.md)
- [Build Your Own API Call](https://api-documentation.versium.com/reference/build-your-own-api-call.md)
- [Interpret API results](https://api-documentation.versium.com/reference/interpreting-the-api-results.md)
- [Contact Append API](https://api-documentation.versium.com/reference/contact-append-api.md)
- [Output Sample](https://api-documentation.versium.com/reference/api-output.md)
- [Try the API](https://api-documentation.versium.com/reference/customer-contact-lookup.md): Get consumer contact information. * Returned results use your monthly matches. *
- [Demographic Append API](https://api-documentation.versium.com/reference/demographic-append-api.md)
- [Demographic Output Sample](https://api-documentation.versium.com/reference/api-output-1.md)
- [Full Demographic Insights](https://api-documentation.versium.com/reference/full-demographic-insights.md)
- [Output Sample Full Demographic](https://api-documentation.versium.com/reference/output-sample-full-demographic.md): Here's the output of the above API call, in JSON.  **Note**: output fields with no value do not show up in the response.
- [Try the API](https://api-documentation.versium.com/reference/consumerinfo.md): Try out the consumerinfo API. * Returned results use your monthly matches.  *
- [Online Audience Append API](https://api-documentation.versium.com/reference/online-audience-append-api-new.md)
- [Output Sample](https://api-documentation.versium.com/reference/output-sample-new.md)
- [Try the API](https://api-documentation.versium.com/reference/get_new-endpoint.md): This is your first endpoint! Edit this page to start documenting your API.
- [Firmographic Append API](https://api-documentation.versium.com/reference/firmographic-api.md)
- [Output Sample](https://api-documentation.versium.com/reference/output-1.md)
- [Try the API](https://api-documentation.versium.com/reference/try-it.md)
- [Consumer to Business (C2B) Append API](https://api-documentation.versium.com/reference/consumer-to-business-append-api.md)
- [Output Sample](https://api-documentation.versium.com/reference/output-2.md)
- [Try the API](https://api-documentation.versium.com/reference/try-it-2.md)
- [IP-to-Domain API](https://api-documentation.versium.com/reference/ip-to-domain.md)
- [Output Sample](https://api-documentation.versium.com/reference/output-sample.md)
- [Try the API](https://api-documentation.versium.com/reference/try-the-api-1.md)
- [HEM-to-Business-Domain API](https://api-documentation.versium.com/reference/hem-to-business-domain.md): Hashed Email to Business Domain
- [Output Sample](https://api-documentation.versium.com/reference/output-sample-1.md)
- [Try the API](https://api-documentation.versium.com/reference/try-the-api-2.md)
- [Account Based List (ABM) API](https://api-documentation.versium.com/reference/account-based-list-abm-1.md)
- [Output Sample](https://api-documentation.versium.com/reference/output-sample-2.md)
- [Department Values](https://api-documentation.versium.com/reference/department-values.md)
- [Role Values](https://api-documentation.versium.com/reference/role-values.md)
- [Try the API](https://api-documentation.versium.com/reference/try-the-api.md)
- [B2C ListGen API](https://api-documentation.versium.com/reference/b2c-listgen.md): Consumer Audience Builder
- [Estimates API](https://api-documentation.versium.com/reference/estimates-api.md)
- [ListGen Job API](https://api-documentation.versium.com/reference/listgen-job-api.md)
- [Job Status and Download API](https://api-documentation.versium.com/reference/job-status-and-download.md)
- [Configuration Parameters](https://api-documentation.versium.com/reference/b2c-listgen-configuration-parameters.md)
- [Filter Parameters](https://api-documentation.versium.com/reference/b2c-listgen-demographic-filter-parameters.md)
- [B2B Persona Based API](https://api-documentation.versium.com/reference/b2b-persona-api.md): Business Persona Audience Builder
- [Estimates API](https://api-documentation.versium.com/reference/b2b-estimates-api.md)
- [Persona Based Job API](https://api-documentation.versium.com/reference/b2b-listgen-job-api.md)
- [Job Status and Download API](https://api-documentation.versium.com/reference/b2b-job-status-and-download-api.md)
- [Configuration Parameters](https://api-documentation.versium.com/reference/b2b-configuration-parameters.md)
- [Parameter Values](https://api-documentation.versium.com/reference/parameter-values.md): Lists of available values for B2B Persona config fields
- [Predictive Scores API](https://api-documentation.versium.com/reference/predictive-scores-api.md)
- [Try the API](https://api-documentation.versium.com/reference/try-the-api-copy.md)
- [Suppression List API](https://api-documentation.versium.com/reference/suppression-management-api.md): API to manage the Suppression Lists in REACH
- [Upload and Create a Suppression List](https://api-documentation.versium.com/reference/upload-a-suppression-list.md)
- [View the list of Suppression Lists of an Account](https://api-documentation.versium.com/reference/view-the-list-of-suppression-lists-of-an-account.md)
- [View Details Of A Single Suppression List](https://api-documentation.versium.com/reference/view-a-suppression-list.md)
- [Delete a Suppression List](https://api-documentation.versium.com/reference/delete-a-suppression-list.md)
- [Download a Suppression List](https://api-documentation.versium.com/reference/download-a-suppression-list.md)
- [Try the API](https://api-documentation.versium.com/reference/try-the-api-3.md)
- [Data Prep - Introduction](https://api-documentation.versium.com/reference/data-prep.md)
- [Data Prep Actions](https://api-documentation.versium.com/reference/data-prep-actions.md)
- [DataPrep API](https://api-documentation.versium.com/reference/data-prep-api.md)
- [Short-form API](https://api-documentation.versium.com/reference/short-form-api.md)
- [Long-form API](https://api-documentation.versium.com/reference/long-form-api.md)
- [Example 1 - Clean First/Country/Email](https://api-documentation.versium.com/reference/example-1.md)
- [Example 2 - Separate Full name and clean State and Email](https://api-documentation.versium.com/reference/example-2.md)
- [Example 3 - Clean First/Last/Email/City/State from multiple records (batch)](https://api-documentation.versium.com/reference/example-3.md)
- [Deduplication (DeDupe) - Introduction](https://api-documentation.versium.com/reference/deduplication-api.md)
- [List Upload API](https://api-documentation.versium.com/reference/list-upload-api.md)
- [Deduplication API (dedupe)](https://api-documentation.versium.com/reference/deduplication-api-dedupe.md)
- [Email Validation API](https://api-documentation.versium.com/reference/email-validation.md)

## Pages
- [Bulk Upload API](https://api-documentation.versium.com/page/bulk-api.md)
- [Open Source](https://api-documentation.versium.com/page/open-source.md)
- [Software Development Kits](https://api-documentation.versium.com/page/software-development-kits.md)
- [Versium for Sheets™](https://api-documentation.versium.com/page/versium-sheets.md)

## Changelog
- [v2.1 - What's New - Feb 2021](https://api-documentation.versium.com/changelog/v21-whats-new-feb-2021.md)
- [Welcome to the Versium REACH Developer Portal](https://api-documentation.versium.com/changelog/welcome-to-the-versium-api.md)