Coresignal

Coresignal is a public web data provider that sells company, employee, and job posting datasets and APIs for use cases including investment research, sales technology, HR technology, market research, and AI model training. Founded in 2016, the company reports more than 4.5 billion records collected from public web sources, with data histories going back roughly a decade.^[1][2]

Its flagship datasets include more than 70 million company profiles, over 900 million employee records, and hundreds of millions of historical and active job postings, delivered via APIs or flat files.^[1][2]

What It Does

Coresignal collects, structures, and enriches publicly available business-related web data at scale. Clients use its records to evaluate company performance, track historical headcount, generate and enrich sales leads, source candidates, monitor hiring trends, identify investment targets, and train machine learning models. The company markets its infrastructure to AI agents as well, offering an Agentic Search API and an MCP server that expose structured B2B data to agentic workflows.^[1]

The company reports serving more than 1,000 clients globally, spanning AI development, investment, sales tech, HR tech, and market research.^[1][2]

Data and Methodology

According to its website, Coresignal offers 70M+ company records with over 500 fields, 907M+ employee records with over 300 fields, and 475M+ job postings with 85+ fields; company and employee data extend back to 2016 and job posting data to 2020.^[1] Its Datarade profile describes multi-source collection from public professional networks and business-related sites including Glassdoor, Indeed, and Wellfound.^[2]

Data is processed in three levels — Base (structured), Clean (deduplicated), and Multi-source (integrated from multiple providers) — and delivered in JSON, JSONL, CSV, and Parquet formats via API or flat files uploadable to cloud platforms such as Snowflake, Amazon S3, Azure, Google Cloud, and Databricks.^[1][2]

The company states it collects only publicly available, strictly business-related data, does not scrape behind login-secured areas, and was a founding member of the Ethical Web Data Collection Initiative in 2023.^[1][2]

Products

Products include Company, Employee, and Jobs datasets and corresponding REST APIs, a newer Social Posts dataset covering company and employee posts, funding and firmographic data products, and an Agentic Search API with Fast and Reasoning endpoints plus an MCP server for AI tools. The company has also added integrations with automation platforms Zapier and Clay.^[1]

Delivery and Pricing

Delivery options are self-service APIs through a dashboard or custom flat-file deliveries, with cloud integrations supported directly. Per its Datarade profile, API access starts at $49 per month, with custom pricing for large flat dataset partnerships and free samples available on request.^[2] The company cites an average API response time of 176 milliseconds on its homepage.^[1]

Buyers and Use Cases

Documented use cases include venture capital and private equity firms monitoring portfolio headcount and hiring signals, sales platforms enriching leads, HR tech companies building recruiting products, and AI teams sourcing training data. The company runs a pro bono program providing free data access to academic researchers, listing universities such as New York University, University of Pennsylvania, Cornell, and the University of Edinburgh among participants.^[1]

Datarade lists Coresignal as a verified provider with a 4.8 rating from twelve buyer reviews, and named it a top public web data provider in 2023, 2024, and 2025.^[2]

History

Coresignal was founded in 2016. Per its Datarade profile, the team includes more than 80 professionals in web data extraction and processing, and the company became a founding member of the Ethical Web Data Collection Initiative in 2023. Its homepage marks ten years in the market and positions the company as a data intelligence layer for AI agents.^[1][2]