--- title: "WhoLayer: know who's on your site, then reach them" description: "One tag identifies your website visitors and enriches them with verified emails and mobiles, then sends them to Slack, your CRM, Klaviyo, or your AI agent. Built for B2B and ecommerce." url: https://wholayer.com --- Website visitor identification for B2B and ecommerce # Every visitor has a name. WhoLayer shows you the people and companies visiting your website, finds a verified way to reach them, and sends them to Slack, your CRM, Klaviyo, or your AI agent. [Start free](https://wholayer.com/signup) [See it on your site](https://wholayer.com/#site-check) 100 free credits a month · No card · Never charged for a miss · Cancel any time Use it in the app, by API, or by MCP in Claude or Cursor. AI reads your public homepage and builds a plan. Takes about 10 seconds. Or [estimate your cost](https://wholayer.com/calculator) from your traffic, or [try the API](https://wholayer.com/#try-the-api) with no key. Works with the stack you already run Also native: Microsoft Teams on every plan, Pipedrive and Attio from Starter and above. Salesforce (Scale and above) is coming soon. Native: Slack, Teams, HubSpot, Pipedrive, Attio, Klaviyo, Claude, Cursor. Via signed webhooks or the API: Shopify (theme tag), Zapier, n8n. Logos are trademarks of their owners and indicate compatibility, not endorsement. ## From anonymous to known, in about a minute The same four steps run for every visit. Pick your business to see what they look like for you. Step 1 of 4 · Visit ### Someone reads your pricing page yoursite.com/pricing Pricing Plans for every team size Compare plans {"event":"pageview","path":"/pricing","country":"US"} The WhoLayer tag sees an anonymous US visit on a high-intent page. [Explore Visitor ID](https://wholayer.com/products/visitor-id) Live sandbox, no key needed ## Try the API right here. The real request shape for `POST /v1/people/enrich`, answered by our sandbox. Every result is fictional, nothing is stored, and it costs nothing. POST /v1/people/enrichsandbox ``` curl https://api.wholayer.com/v1/people/enrich \ -H "Authorization: Bearer wl_test_..." \ -H "Content-Type: application/json" \ -d '{"name":"Avery Sample","company_domain":"samplefieldworks.example.com","reveal":["work_email","mobile"]}' ``` response ``` // Press Run request. Results are fictional sandbox data on example.com, and nothing is stored or charged. ``` [Read the API reference →](https://wholayer.com/docs/api) ## Every identified visitor, in one place Names, titles, companies, fit scores, pages viewed, and where each person was sent. Filter it, export it, or ask the assistant about it. ![The WhoLayer dashboard: credits, identified people, and recent visitors](https://wholayer.com/_next/image?url=%2Fproduct%2Foverview.webp&w=3840&q=75&dpl=dpl_FBYFH5gSV7MFrRiSnBKzJWdzwPde) [Open your dashboard free](https://wholayer.com/signup) ### Pay for people, not seats 1 credit buys one identified person or one verified work email. Company-level ID is free, and misses cost nothing. [See pricing →](https://wholayer.com/pricing) ### Routed before they forget you Hot leads reach Slack, Teams, HubSpot, Pipedrive, Attio, Klaviyo, or a signed webhook about a minute after the visit, with a fit score and a plain-English reason. [See destinations →](https://wholayer.com/docs/integrations) ### Opt-outs on every path Every lookup checks our suppression list and yours. US-only for people, and never on sensitive pages. [How we handle data →](https://wholayer.com/trust) Check our work ## No logo wall. Just things you can verify. - ### One tag One async script runs Visitor ID and Shopper ID. Check my install names the problem if something's wrong. [Install guide →](https://wholayer.com/help/quickstart) - ### One wallet, published prices Every product draws from the same credits, and every credit cost is on the pricing page. [Every rate →](https://wholayer.com/pricing) - ### Fair billing Misses, repeat visits in a month, bots, and opted-out people are never charged. Bad results are refunded within a published limit. [The rules →](https://wholayer.com/fair-billing) - ### Readable by agents A data MCP server with 13 tools, a docs MCP server, llms.txt, an OpenAPI spec, and a markdown copy of every public page. [For AI agents →](https://wholayer.com/for-agents) - ### Compliance you can query GET /v1/policy returns the rules we enforce as JSON: US-only person data, consent elsewhere, Global Privacy Control, and blocked sensitive pages. [Policy API →](https://wholayer.com/help/compliance-policy-api) - ### Shipped in the open A dated changelog of what we built, and a live status page. [Changelog →](https://wholayer.com/changelog) ## Built for what you're selling ### See the people behind your pipeline traffic. Install one tag and get the name, title, LinkedIn, and verified work email of US visitors, plus the company for everyone else. Then send hot leads to Slack, Microsoft Teams, your CRM, or any tool that takes a webhook, automatically. What's included - Person and company ID - ICP scoring with a reason - Where they came from - High-intent alerts - Daily or weekly digest [Explore Visitor ID](https://wholayer.com/products/visitor-id) slack · #hot-leads ``` Dana Okafor · VP Revenue · Fieldline (210 staff) Viewed /pricing → /compare → /integrations/hubspot Work email: dana@fieldline.io (verified) LinkedIn: linkedin.com/in/danaokafor Visits this month: 3 · Source: Google Ads ``` Try it ## Your traffic, out of focus. Until now. Move the scanner up and down the list to see who these visitors are. They're fictional; on your site, it's your traffic. Visitors on your site right nowMove your cursor up and down the list Illustration: rows of anonymous website visitors. Inside the lens, each visitor is resolved to a named person. Pricing ## Pay for people, not seats. One credit wallet across every product. If we don't find someone, you don't pay, and the rules are published on Fair billing. [Compare plans](https://wholayer.com/pricing) [Estimate your cost](https://wholayer.com/calculator) Per identified person on Growth $0.04 Company-level visitor ID Free Free credits every month 100 Charged when there's no match $0 For AI agents ## Your agent gets a spend cap before it gets a key. Add the WhoLayer MCP server to Claude, Cursor, or VS Code. Every key has its own daily credit cap, every call has a ceiling, and asking what a call would cost is free. The docs MCP server (5 tools) needs no key at all. - enrich\_person - search\_people - verify\_emails - lookup\_phone - get\_company - list\_visitors - get\_balance - estimate\_cost - +5 more [For AI agents →](https://wholayer.com/for-agents) [MCP setup →](https://wholayer.com/docs/mcp) [llms.txt →](https://wholayer.com/llms.txt) claude code · add WhoLayer ``` claude mcp add --transport http wholayer https://mcp.wholayer.com/mcp \ --header "Authorization: Bearer wl_live_YOUR_KEY" ``` ## Built to be used responsibly - ### Opt-outs come first Every lookup checks our suppression list. Anyone can opt out in two minutes, and we process California's deletion platform every 45 days. - ### Global Privacy Control honored Browsers that send a Global Privacy Control signal are not identified. The rule is in our published policy, not just our privacy notice. - ### No LinkedIn scraping Our data comes from consent-aware publisher networks and licensed partners, not from scraping profiles. - ### Never on sensitive pages We don't identify people on pages about health, reproductive care, religion, financial hardship, and other sensitive topics, and you can keep the tag off any page you choose. - ### US-only for people Person-level ID runs on US traffic only. Outside the US we identify companies, and only after consent. - ### Accuracy you can check We'll publish measured match and accuracy rates every quarter, against a holdout set of known visitors. [Read how we handle data →](https://wholayer.com/trust) Ready when you are ## Find out who's already visiting. Install one tag. 100 free credits every month, no card needed. [Start free](https://wholayer.com/signup) [Talk to sales](https://wholayer.com/contact?topic=sales)