# APIs Overview ## Start with APIs
Authorization
Credits
Rate limits
Response codes
Requests
Webhooks
{% hint style="info" %} **Multi-source, Clean, or Base?** * **Multi-source datasets** contain cleaned and enriched data combining information from multiple sources. * **Clean datasets** are derived from our Base data and cleaned to ensure the best quality. * **Base datasets** freshly scraped and structured/updated for easier use. {% endhint %} ## Company APIs
Multi-source Company APIGet a comprehensive view of any company with up-to-date firmographics, headcount changes, and funding information from multiple sourcesDictionarySampleElasticsearch DSLSearch PreviewCollectBulk CollectEnrich
Clean Company APICleaned and processed company data – ready to use in your workflowDictionarySampleElasticsearch DSLSearch PreviewCollectBulk CollectEnrich
Base Company APIAccess millions of companies – the fastest way to build a company database at scaleDictionarySampleSearch FiltersElasticsearch DSLSearch PreviewCollectBulk Collect
## Employee APIs
Multi-source Employee APIUnified employee data built by combining multiple sources – delivering fresh and complete dataDictionarySampleElasticsearch DSLSearch PreviewCollectBulk CollectWebhook Subscriptions
Clean Employee APIStandardized and consistent employee data – get clean inputs for your models and workflows from day oneDictionarySampleElasticsearch DSLSearch PreviewCollectBulk CollectWebhook Subscriptions
Base Employee APIUp-to-date information about employees, including their career highlights and other key detailsDictionarySampleSearch FiltersElasticsearch DSLSearch PreviewCollectBulk CollectWebhook Subscriptions
Real-time Employee APIOn-demand access to the freshest available employee data – triggered live at the moment of your requestDictionaryPOST Request
Employee Posts APIThe most recent records of employee-published content, including post description, engagement metrics, and authorship metadataDictionarySampleSearch FiltersElasticsearch DSLCollect
## Jobs APIs
Multi-source Jobs APIJobs data from multiple sources – power hiring trend analysis with unified, daily-refreshed dataDictionarySampleElasticsearch DSLSearch PreviewCollectBulk Collect
Base Jobs APIMonitor recent hiring signals and historical vacancy data to predict company's next moveDictionarySampleSearch FiltersElasticsearch DSLSearch PreviewCollectBulk Collect
### Tools used in examples We use Postman (with cURL request examples) in the documentation to demonstrate how to work with our APIs. The tool is provided for illustrative purposes only, feel free to use any HTTP client or API-compatible tool of your choice. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.coresignal.com/api-introduction/apis-overview.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.