Changelog

Changes to the Seamless.AI API and these docs, newest first.

Docs

New Agent quickstart: a one-page guide for AI agents.
New Error codes: every status, code, and poll status, with retry guidance.
New Choose an API, Glossary, Integration recipes, and Prompts and skills.
The API catalog now includes a plain-text index of every API for agents and screen readers.

Docs

Launched the API Catalog: 67 APIs, including a page for each of the 48 Contact and Company Search filters.
Added identity APIs: Email → Profile, Phone → Profile, LinkedIn URL → Profile, Company Name → Website, and Website → Company Profile.
The API v2 reference is now published under API Reference.

API versions

Version	Base URL	What it includes
v1	`https://api.seamless.ai/api/client/v1`	Search, research, poll, location lookup, My Contact Data, My Company Data, OAuth
v2	`https://api.seamless.ai/api/client/v2`	Everything in v1, plus reverse lookup by `emailAddress` or `phoneNumber`, list membership updates, lists, saved searches, campaigns, email, templates, tasks, calls, activity, credits, and feature flags

Both versions are live, and the same API key works on both.

These older field names are still returned so existing integrations keep working. Use the new names in new code.

Deprecated field	Use instead	Where
`name`	`fullName`	Contact search results
`title`	`jobTitle`	Contact search and research results
`company`	`companyName`	Contact search and research results
`employeeSizeRange`	`companySize`	Contact search results
`companyStaffCountRange`	`companySize`	Contact research results
`companyRevenueRange`	`companyRevenue`	Contact research results
`name`	`companyName`	Company search and research results
`staffCountRange`	`companySize`	Company search and research results
`revenueRange`	`companyRevenue`	Company search and research results

No removal date has been announced for these fields.