Reference & Lookup Data · Integration

Clearbit

Add Clearbit to your product for your customers, and give your AI agents governed access to it.

Embed a Clearbit integration so your customers can enrich their own company and contact records from inside your product, using their own credentials so usage bills to them. fastn handles authentication and API upkeep, and throttles bulk enrichment so a large batch does not exhaust a customer's allowance.

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In your product

Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.

Enrich a company or contact record at the point of entry in your product.

Backfill existing records in batches with requests throttled.

Read firmographic attributes so your product can segment without manual research.

Flag records that could not be matched so users know what needs attention.

For your AI agents

Governed, audited access for the agents you build, through the MCP server.

An agent enriches a company before answering a research question.

An agent resolves a domain to a company profile mid-workflow.

An agent flags records it could not enrich rather than guessing.

Example prompt

Enrich the accounts created this week and list any that could not be matched to a company.

Set up Clearbit in 4 steps

  1. 01Open the Clearbit connector from your fastn dashboard.
  2. 02Have each customer supply their Clearbit API credentials.
  3. 03Map the attributes your product stores, then enable the enrichment actions you need.
  4. 04Call them from your product, or expose them to an agent through the MCP server.

Why teams use the Clearbit integration

What you get by embedding it with fastn instead of building it yourself.

  • Ship a Clearbit integration without building it. Your customers connect their own Clearbit account inside your product and work their lookups, results and reports there, with no per-customer code on your side.
  • Handle the part that actually costs time: these are metered read sources, so an uncached lookup on every page view burns the customer's allowance. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Clearbit update is not your on-call problem.
  • One integration serves your product and your agents. The same governed Clearbit connection powers in-product features and gives AI agents scoped, audited access, so you answer questions from an authoritative outside source without holding that data yourself without wiring it twice.

Used by these teams

MarketingData & Analytics

Works well with

HubSpotSalesforceApollo

Often used alongside

Tools the same teams tend to run next to Clearbit, across other categories.

NotionSnowflakeBoxShopify

Clearbit integration FAQ

How do I add a Clearbit integration to my product?

Enable the Clearbit connector in your fastn dashboard, then let each customer authenticate their own Clearbit account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Clearbit client code in your app and no per-customer branch in your codebase. Setup is 4 steps.

Do my customers each connect their own Clearbit account?

Yes. Every connection is scoped to the individual customer, so each authorises their own Clearbit account and only ever sees their own lookups, results and reports. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.

Can AI agents use this Clearbit integration?

Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent enriches a company before answering a research question.

Who maintains the Clearbit integration?

fastn does. When Clearbit changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.

Whose credentials does a Clearbit lookup run under?

Each customer's own. Quota and cost land on the customer that caused them rather than on a shared key you have to meter and re-bill, and one heavy customer cannot exhaust another's allowance.

How should Clearbit results be cached?

Per tenant, with a window that matches how fast the underlying data actually moves. Clearbit is a read source rather than a system of record, so the same query returns the same answer until the source changes, and caching is the difference between a sustainable integration and one that exhausts a customer's allowance on a busy page.

What can I build with the Clearbit integration?

A common starting point: enrich a company or contact record at the point of entry in your product. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.

How much does the Clearbit integration cost?

It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Clearbit does not change your per-connector cost. You can start free with 3 connected accounts.

Add Clearbit to your product

Start free with 3 connected accounts. No sales call required, and no per-customer integration code.

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