Human Resources · Integration
Gusto
Add Gusto to your product for your customers, and give your AI agents governed access to it.
Embed a Gusto integration so your customers can bring their own people and payroll data into your product without re-keying it. This data is sensitive and its access rules are stricter than most systems, so access is scoped per tenant, limited to the fields you map, and every read and write is logged. fastn handles per-customer OAuth, token refresh, and API upkeep.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let customers sync their own employee records into your product, mapped to the fields you need.
Read employment and compensation details so your product calculates without users typing them in.
Read time off so your product knows who is available before it assigns work.
Trigger your product when someone is hired or leaves so provisioning and removal follow on time.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent answers a question about headcount or employment status from live records.
An agent reads time off before proposing a schedule, within scoped permissions.
An agent reacts to a termination and starts removal steps across the customer's other systems.
Example prompt
List employees hired in the last quarter with their department and start date.
Set up Gusto in 4 steps
- 01Open the Gusto connector from your fastn dashboard.
- 02Have each customer authorise their own Gusto account with OAuth.
- 03Map the employee fields your product needs and nothing more, then enable actions and triggers.
- 04Call them from your product, or expose them to an agent through the MCP server.
Why teams use the Gusto integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Gusto integration without building it. Your customers connect their own Gusto account inside your product and work their employees, employment records and working time there, with no per-customer code on your side.
- Handle the part that actually costs time: HR data is sensitive and its access rules are stricter than most systems. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Gusto update is not your on-call problem.
- One integration serves your product and your agents. The same governed Gusto connection powers in-product features and gives AI agents scoped, audited access, so you keep people data current without manual re-entry without wiring it twice.
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BoxGusto integration FAQ
How do I add a Gusto integration to my product?
Enable the Gusto connector in your fastn dashboard, then let each customer authenticate their own Gusto account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Gusto client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Gusto account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Gusto account and only ever sees their own employees, employment records and working time. 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 Gusto 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 answers a question about headcount or employment status from live records.
Who maintains the Gusto integration?
fastn does. When Gusto 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.
How is sensitive Gusto employee data handled?
Access is scoped per tenant and limited to the fields you map, credentials are encrypted, and every read and write is logged. You expose only what your product actually needs rather than the whole employee record.
Can joiner, mover and leaver changes be automated?
Yes. Where Gusto is where a hire, a role change or a departure is recorded, that change can trigger downstream provisioning or removal across the customer's other connected systems. Where Gusto sits downstream of the HR system of record, the same event can be pushed into it so its worker list, schedules and access stay in step, which is where most of the manual effort sits.
What can I build with the Gusto integration?
A common starting point: sync their own employee records into your product, mapped to the fields you need. 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 Gusto integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Gusto does not change your per-connector cost. You can start free with 3 connected accounts.
Add Gusto to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.