Marketing Automation · Integration
Marketo
Add Marketo to your product for your customers, and give your AI agents governed access to it.
Marketo sits in enterprise demand generation, so a Marketo integration deals with leads and their activity history, programs, smart campaigns and smart lists, and the custom lead fields every instance grows. Each subscription has its own munchkin id, which forms part of the endpoint host, so there is no single base URL and each customer's calls go somewhere different. The constraint that shapes the design, though, is the daily call quota on the REST API. It is counted across everything hitting that instance, the customer's other tools included, so a chatty integration can exhaust an allowance that was never yours alone. Bulk endpoints and change-based reads exist for precisely that reason. fastn paces requests per tenant, holds the credentials and follows Marketo's API.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let each customer connect their own instance, with its munchkin id resolved for them rather than compiled into your app.
Create or update a lead and map the custom fields that instance uses for scoring and routing.
Add a lead to a program or a smart campaign so demand generation picks up what your product saw.
Read activity history in bulk, or by change since a timestamp, so a full pull does not eat the day's allowance.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent reads a lead's activity history before explaining why that person was scored as they were.
An agent adds a lead to an approved program, and the campaign it set off is recorded.
An agent reports how many leads a program acquired without pulling the whole database to do it.
Example prompt
What activities has this lead recorded since last quarter, and which program brought them in?
Set up Marketo in 4 steps
- 01Enable the Marketo connector from your fastn dashboard.
- 02Have each customer authorise their own Marketo account, so calls run under their credentials rather than a shared key.
- 03Decide which campaigns, segments and subscribers your product needs, map those fields, then enable the actions and triggers you want.
- 04Call it from your product and expose it to your agents through the same governed connection.
Why teams use the Marketo integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Marketo integration without building it. Your customers connect their own Marketo account inside your product and work their campaigns, segments and subscribers there, with no per-customer code on your side.
- Handle the part that actually costs time: engagement data arrives as a high-volume event stream, so ordering and deduplication matter. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Marketo update is not your on-call problem.
- One integration serves your product and your agents. The same governed Marketo connection powers in-product features and gives AI agents scoped, audited access, so you trigger and measure campaigns from inside your product without wiring it twice.
Used by these teams
Compare with
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HubSpot
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Zoho CRMMarketo integration FAQ
How do I add a Marketo integration to my product?
Enable the Marketo connector in your fastn dashboard, then let each customer authenticate their own Marketo account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Marketo client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Marketo account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Marketo account and only ever sees their own campaigns, segments and subscribers. 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 Marketo 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 reads a lead's activity history before explaining why that person was scored as they were.
Who maintains the Marketo integration?
fastn does. When Marketo 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.
Can I trigger a Marketo campaign from an event in my product?
Yes. Product events can start a campaign, add a contact to a segment, or enrol someone in a journey, so lifecycle messaging follows what a user actually did rather than a nightly export.
Can I read engagement results back from Marketo?
Yes. Results come back scoped per tenant, so your product can act on them without one customer's data mixing with another's. What you get depends on the channel: opens, clicks, bounces and unsubscribes where there are sends, and impressions, spend and conversions where there are campaigns.
What can I build with the Marketo integration?
A common starting point: let each customer connect their own instance, with its munchkin id resolved for them rather than compiled into your app. 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 Marketo integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Marketo does not change your per-connector cost. You can start free with 3 connected accounts.
Add Marketo to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.