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Documentation Index

Fetch the complete documentation index at: https://docs.seamless.ai/llms.txt

Use this file to discover all available pages before exploring further.

Use an API key when you want the fastest path to calling the REST API — scripts, Postman, server backends, and most first integrations start here.
The Public API menu appears only if your account has Public API access. If you do not see it, contact your Seamless administrator or support.

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Create an API key

1

Open Public API settings

Sign in at login.seamless.ai, go to Settings → Public API, open the API Key tab, and click Create New Connection.
2

Copy the key

Copy the key value immediately. Store it in a password manager or secrets manager — treat it like a password.
3

Send it on every request

Pass the key in the Token header on every authenticated request to https://api.seamless.ai/api/client/v1.
curl -X POST "https://api.seamless.ai/api/client/v1/search/companies" \
  -H "Content-Type: application/json" \
  -H "Token: $SEAMLESS_API_KEY" \
  -d '{"companyName": ["Acme Corp"], "limit": 5}'

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API key vs OAuth

API keyOAuth 2.0
Best forScripts, Postman, single-tenant backendsMulti-user apps that sign users in with Seamless
HeaderToken: YOUR_API_KEYAuthorization: Bearer ACCESS_TOKEN
Setup timeMinutesRegister client + authorization flow
For user-facing apps, use OAuth. For everything else, an API key is usually enough.

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Next steps

First API request

Search, research, and poll in one runnable tutorial.

Try in Postman

Import the OpenAPI spec and run requests without writing code.

MCP for AI agents

Connect Cursor, Claude, or ChatGPT to Seamless tools — no REST boilerplate.

Rate limits & credits

Understand quotas, response headers, and 429 errors.