> ## 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.

# Choose an API: I have X, I want Y

> Find the right Seamless.AI API from the data you already have and the data you want back.

Start from what you have. Each row names the API to call, what it costs, and links to the full reference.

## Start from a person

| I have | I want | Use | Cost |
| - | - | - | - |
| An email | Name, title, company, phones, LinkedIn | [Email → Profile](/api-catalog/email-to-profile) | 1 credit |
| A phone number | Who it belongs to | [Phone → Profile](/api-catalog/phone-to-profile) | Per results returned |
| A LinkedIn, Sales Navigator, or Recruiter URL | Emails, direct dials, mobiles | [LinkedIn URL → Profile](/api-catalog/linkedin-to-profile) | 1 credit |
| A name and a company or domain | Emails, phones, job history | [Contact Research](/api-catalog/contact-enrichment) | 1 credit |
| A contact I knew at a past company | Where they work now | [Job Change](/api-catalog/job-changes) | 1 credit |
| A `searchResultId` from a search | Full contact record | [Contact Research](/api-catalog/contact-enrichment) | 1 credit |

## Start from a company

| I have | I want | Use | Cost |
| - | - | - | - |
| A company name | Its website domain | [Company Name → Website](/api-catalog/company-name-to-website) | Per results returned |
| A domain or website URL | Firmographics, phones, address, tech, funding | [Website → Company Profile](/api-catalog/website-to-company-profile) | 1 credit |
| A domain | The people who work there | [Company Domain → Contacts](/api-catalog/contact-filters/company-domain) | Per results returned |
| A company name | The people who work there | [Company Name → Contacts](/api-catalog/contact-filters/company-name) | Per results returned |
| A company that used to employ my champions | Where those people are now | [Past Company → Contacts](/api-catalog/contact-filters/past-company) | Per results returned |

## Start from a target market

| I have | I want | Use | Cost |
| - | - | - | - |
| A persona: title, seniority, department | Matching people | [Contact Search](/api-catalog/contact-search) | Per results returned |
| An ICP: industry, size, revenue, location | Matching companies | [Company Search](/api-catalog/company-search) | Per results returned |
| A technology, such as Salesforce | Companies or people that use it | [Technology → Companies](/api-catalog/company-filters/technologies) or [→ Contacts](/api-catalog/contact-filters/technologies) | Per results returned |
| A buying signal: funding, news, new hires | Companies or people with that signal | [Funding Date](/api-catalog/company-filters/funding-date), [Company News](/api-catalog/company-filters/company-news), [Job Change → Contacts](/api-catalog/contact-filters/job-changes) | Per results returned |
| A city, state, or zip | The exact value filters accept | [Location Lookup](/api-catalog/location-lookup) | Free |
| A saved search in Seamless | Its results by API | [Saved Search → Contacts](/api-catalog/contact-filters/saved-search) | Per results returned |

## Start from your own data

| I have | I want | Use | Cost |
| - | - | - | - |
| Records my org already researched | Full records for CRM sync | [My Contact Data](/api-catalog/my-contact-data), [My Company Data](/api-catalog/my-company-data) | Free |
| Researched contacts | A sequence or email send | [Engagement API](/api-catalog/engagement) | Plan-based |
| An AI assistant or IDE | All of the above as tools | [MCP server](/api-catalog/mcp) | Same as REST |

## Not available yet

| I have | I want | Status |
| - | - | - |
| My best customers | Look-alike companies | [Coming soon](/api-catalog/look-alikes) |
| My ICP | Ranked recommendations | [Coming soon](/api-catalog/recommendations) |
| A keyword | Companies whose homepage mentions it | [Coming soon](/api-catalog/keyword-homepage-search) |

Search credit rules are on [Rate limits and credits](/rate-limits-and-credits).


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