# Horizon ## Docs - [Enrich a company from a LinkedIn URL, name, or domain](https://docs.gravitygtm.com/horizon/api-reference/company/enrich-a-company-from-a-linkedin-url-name-or-domain.md): Looks up a LinkedIn company page by URL, or by a name/domain search hint. Costs 2 credit(s) per call. - [Find people at a company](https://docs.gravitygtm.com/horizon/api-reference/company/find-people-at-a-company.md): Searches LinkedIn for people currently working at a given company, optionally filtered by job title, location, and a person's name (a case-insensitive substring match applied to the results). Accepts a company_url directly, OR a company_name/company_domain to resolve internally first (same resolutio… - [Search for companies](https://docs.gravitygtm.com/horizon/api-reference/company/search-for-companies.md): Searches LinkedIn companies by keyword and/or location. Costs 3 credit(s) per call. - [Verify an email address's deliverability](https://docs.gravitygtm.com/horizon/api-reference/email/verify-an-email-addresss-deliverability.md): Runs free local hygiene checks first, then Findymail's deliverability check. Results are cached 60 days. A fail-soft "unknown" verdict (vendor down/unset) is delivered but never charged or cached. Costs 3 credit(s) per call. - [Health check](https://docs.gravitygtm.com/horizon/api-reference/health/health-check.md): Public — no Authorization header required. - [Search job postings](https://docs.gravitygtm.com/horizon/api-reference/jobs/search-job-postings.md): Searches LinkedIn job postings by keyword, location, and recency window. Not cached (recency windows are relative to now). Costs 3 credit(s) per call. - [Fetch a LinkedIn post's reactions or comments](https://docs.gravitygtm.com/horizon/api-reference/linkedin/fetch-a-linkedin-posts-reactions-or-comments.md): Fetches the reactors or commenters on a LinkedIn post. Not cached; zero engagement so far is a genuine answer, not a miss. Costs 3 credit(s) per call. - [Fetch a LinkedIn profile's recent posts](https://docs.gravitygtm.com/horizon/api-reference/linkedin/fetch-a-linkedin-profiles-recent-posts.md): Fetches recent posts from a LinkedIn profile or company page within a 1/7/30-day window. Not cached; an empty list is a genuine answer, not a miss. Costs 3 credit(s) per call. - [Enrich a person from a LinkedIn URL or name](https://docs.gravitygtm.com/horizon/api-reference/person/enrich-a-person-from-a-linkedin-url-or-name.md): Looks up a LinkedIn profile by URL, or resolves a name (+ optional company hint) to a profile first. Pass include_email:true to also attempt a verified business email (raises vendor cost; see credits_charged). Costs 2 credit(s) per call. - [Find a person's email address](https://docs.gravitygtm.com/horizon/api-reference/person/find-a-persons-email-address.md): Waterfalls HarvestAPI then Findymail to find a business email from a LinkedIn URL, or a name + domain. Charged on success only — a miss (422) is a full refund. Costs 25 credit(s) per call. - [Search LinkedIn profiles by name or keyword](https://docs.gravitygtm.com/horizon/api-reference/person/search-linkedin-profiles-by-name-or-keyword.md): Returns the full HarvestAPI candidate list for a name/keyword query -- use this to disambiguate an ambiguous name (e.g. multiple people named "John Smith") before calling /v1/person/enrich or /v1/person/email with a specific linkedin_url. Costs 3 credit(s) per call. - [Search the web](https://docs.gravitygtm.com/horizon/api-reference/search/search-the-web.md): General web search (You.com). Not cached; an empty result set is a genuine answer, not a miss. Costs 3 credit(s) per call. - [Look up your current credit balance](https://docs.gravitygtm.com/horizon/api-reference/usage/look-up-your-current-credit-balance.md): Free — does not spend credits. Requires a valid `Authorization: Bearer ` header. - [Authentication](https://docs.gravitygtm.com/horizon/authentication.md): API key format, where to get one, and how to rotate keys - [Credits & Pricing](https://docs.gravitygtm.com/horizon/credits-and-pricing.md): The prepaid-credit model, the response envelope, and per-endpoint costs - [Errors & Rate Limits](https://docs.gravitygtm.com/horizon/errors-and-rate-limits.md): Error response shape, status codes, and the rate limit - [MCP Install](https://docs.gravitygtm.com/horizon/mcp-install.md): Connect Horizon as an MCP server to Claude, Cursor, or any MCP client - [Quickstart](https://docs.gravitygtm.com/horizon/quickstart.md): Make your first Horizon API call in under 5 minutes - [Add Horizon to Slack](https://docs.gravitygtm.com/horizon/slack-install.md): Install the Slack app, complete signup, and ask your first question - [Using Horizon in Slack](https://docs.gravitygtm.com/horizon/slack-usage.md): Compound requests, list processing, spend confirmation, and daily limits ## OpenAPI Specs - [openapi](https://docs.gravitygtm.com/horizon/openapi.json)