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Seamless Hero
Seamless gives you programmatic access to enriched company and contact data. Search for targets, submit research requests, and receive results via webhooks or polling. If you work in an AI IDE, you can also use the MCP server for the same data through agent tools.

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Choose your path

AI builder / vibe coder

Use MCP in Cursor or Claude, or script the REST API for automation.

RevOps / integrations

Research via API and sync enriched records to your CRM or warehouse.

Developer

First request in curl, Python, or Node — or try Postman.

Seller / operator

Learn the Seamless product, then hand off to your technical teammate.

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Get started

API keys

Fastest path — Token header on every request.

OAuth

Multi-user apps — Authorization: Bearer after token exchange.

First request

Search → research → poll with runnable examples.

MCP for agents

Connect Seamless to Cursor, Claude, or ChatGPT.

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How it works

1

Authenticate

Create an API key under Settings → Public API, or complete the OAuth flow.
2

Search and research

Call Search companies or Search contacts, then Research companies or Research contacts with the searchResultId.
3

Retrieve results

Use webhooks or poll company / poll contact results.
Not sure which path fits? Read Choose a workflow or browse Use cases.