01
Every integration, already done
Your customers connect their own accounts, select the integrations they use, and customize them to fit how they work. Nothing lands on your team.
Embedded integration platform for B2B SaaS
Integrations your customers ask for.
Select or build integration templates once. Your customers customize them to fit how they work, inside your product. fastn keeps them all working.
Live in hours, not weeks · 99.9% uptime SLA · SOC 2 Type II
Built for sales platforms.
All the apps your customers use, always connected. See the catalogue →
Trusted by customers
Three steps, then it runs itself
One widget embed for you. Simple connect and configure steps for your customers. More time to focus on core product development.
01 · You, once
Embed the fastn widget
import { FastnConnectCard } from '@fastn-ai/embed/react';
export function Integrations() {
return (
<FastnConnectCard
orgId={org.id}
token={token}
onConnected={(e) => {}}
/>
);
}02 · Your customers, self-serve
They connect and configure their stack
Salesforceconnected ✓
HubSpotconnected ✓
Snowflakeconnect →
03 · Then, on your timeline
Data flows, monitored
synced 1,204 records → Salesforce12s
webhook delivered · 0 retries34s
token expiring, auto-renewed1m
1,272
Integrations your customers can connect, inside your product
0/0
Every integration monitored, retried, and healed
0 to 0%
Retention lift for customers using an integration (ProfitWell)
Embed the widget once.Customers connect and configure their integrations.
One widget gives your customers the integration catalog and a builder for anything missing. fastn handles authentication, mapping, retries and monitoring.
02
Say yes in the sales call
One embedded widget lights up the whole integration catalog. “Do you support X?” stops being a roadmap conversation and becomes a toggle.
03
Build once, use three ways
Your customers use it in the widget. Your product calls it through one API. Your AI agents call it as a tool from Claude, Cursor or any MCP client, with the same permissions and every call logged.
04
Keeps working when apps change
An API moves, auth rotates, a version is retired. fastn’s agents see it, write the fix and test it. The work stays with fastn, not your team.
Monitoring and alerts on every plan; automated fixes under SLA on Enterprise.
05
Engineers back on product
After the one-time widget embed, build and maintenance trend to zero. Teams that want deeper control can still drop into code.
06
Pass security review calmly
SOC 2, granular RBAC, private networking, full observability, self-hosting. Built for apps your customers can’t afford to get wrong.
Integration health,surfaced per customer.
Per-integration health in one dashboard for every customer’s integrations: what synced, what retried, what failed, and what needs attention.
Integrations healthlive
Uptime · 30d
99.98%
Syncs today
184,209
Auto-healed
312 events
P95 latency
142 ms
| Integration | Tenant | Last sync | 24h | Status |
|---|---|---|---|---|
Salesforce | acme-prod | 12s ago | healthy | |
Snowflake | borealis | 40s ago | API change absorbed | |
HubSpot | corex-eu | 1m ago | auto-retried · recovered | |
Zendesk | delta | 5s ago | healthy |
You shouldn’t have to choosebetween building it all and handing over an API.
Your team can’t build all of the requested integrations, let alone customize each one and keep them working. Handing them an API moves the work onto the customer. Either way, you risk losing customers.
Build it yourself
A backlog you own
Every integration, every customer variation and every API change lands on your engineers.
You can’t build them all
Every customer variation is a ticket
Every API change is yours to fix
Hand over the API
Docs and hope
You give customers API access and documentation, and hope they build it.
Maybe they build it, maybe they don’t
Nothing to show in the sales call
You risk losing the customer
fastn: built, customized, kept working
Integrations inside your product
fastn builds them, your customers customize them to fit how they work, and nothing lands on your team.
HP cut its customer onboarding cycle by about 75%. Read the HP story
Customers customize to fit how they work
fastn builds, monitors and maintains
Readable logs, per integration
One missing integration hurts every team
Sales loses the deal. Success loses the customer.Engineering loses the roadmap.
For revenue teams
Stop losing deals to a missing integration
“Do you support X?” becomes “yes”, every time. Close the deals that used to stall in security and stack review.
89%of buyers put integrations ahead of standalone featuresDemandbase, 2025
For customer success
Deliver what sales promised
Customers go live with the integrations they were sold, in days not quarters. Customers who connect their apps are the ones who stay.
58%less churn among customers using integrationsCrossbeam, 2023
For engineering
Get your roadmap back
One embedded widget replaces the entire integration backlog. Your team ships product while customers configure their own integrations.
0builds landing on your team
Connect the appsyour customers actually run on
HubSpotSalesforcePDPipedriveSlackNSNetSuiteNotionJiraGoogle DriveSnowflakeZendeskSNServiceNowMarketoGmailPostgresShopifyQuickBooksAsanaStripeAirtableDropboxMongoDBGitHubOracleSAPOktaDatabricksTableauMailchimp
TwilioDockerMySQLRedisFigmaLinearIntercomMSMicrosoft TeamsOLOutlookWDWorkdayXRXeroSGSendGridand many moreHubSpotSalesforcePDPipedriveSlackNSNetSuiteNotionJiraGoogle DriveSnowflakeZendeskSNServiceNowMarketoGmailPostgresShopify
QuickBooksAsanaStripeAirtableDropboxMongoDBGitHubOracleSAPOktaDatabricksTableauMailchimpTwilioDockerMySQLRedisFigmaLinearIntercomMSMicrosoft TeamsOLOutlookWDWorkdayXRXeroSGSendGridand many more
Live catalog · new integrations ship every week
“fastn enables us to move faster and smarter. By embedding their infrastructure directly into our platform, we can now offer secure, observable, and extensible integrations at scale, with less effort and more control. It's helping us evolve from reactive support to proactive intelligence.”
HPWorkforce Experience Platform team“Our customers wanted alerts delivered where they already work, not just through email. With fastn, we were able to add those delivery options without having to build and maintain each integration ourselves, while staying focused on our core product.”
“We used to start every client integration from scratch, then spend the next year keeping its servers, cron jobs and queues alive. With fastn, the plumbing isn't our problem anymore. My team spends its time on the logic that's actually different for each client, and every new integration starts from what we've already built.”
“With fastn, we went from needing a HubSpot integration to having one up and running in less than a day. What could have required weeks of engineering effort turned out to be incredibly simple.”
Recognized by
Before you choose
What teams ask before they pick an integration platform.
What if we outgrow fastn or want to leave?
Your logic stays yours. Every workflow is a JavaScript file you can mirror to your own GitHub repository, and the connectors you build and their actions export as JSON files. Scale has no contract and can be cancelled at any time. See how fastn compares.
How is this different from a unified API or a traditional embedded iPaaS?
A unified API gives you one fixed schema, so a customer whose fields or objects do not fit it lands back on your engineers. A traditional embedded iPaaS gives your team a builder, so every customer variation is still your team's work. With fastn, your customers connect their own accounts and customize each integration to fit their fields inside your product, and the same integration serves your product through one API and your AI agents through MCP. Compare fastn vs Merge, fastn vs Paragon and fastn vs Prismatic.
Who fixes a broken integration on my plan?
On every plan, breaks show up in monitoring and alerts. On Launch and Scale your team fixes them, with help from fastn's builder agent. On Enterprise, fastn's maintainer agent detects the break, writes and tests the fix, and ships it under your SLA. See the plans.
Where does our customers' data go?
Credentials are encrypted, and every customer connection is isolated from every other customer's. fastn is SOC 2 Type II, and Enterprise adds SSO/SAML, data residency and dedicated infrastructure. Read about security.
Who is fastn for, and who is it not for?
fastn is for B2B SaaS teams whose customers ask them to connect the apps they already run, such as their CRM, ERP or support desk. If you only need one or two integrations for your own team's internal use, a workflow tool you run yourself may be simpler.
Never lose a dealto a missing integration.
Embed the widget once, let your customers customize the integrations to fit how they work, and fastn keeps it all working. No infrastructure to run, nothing lands on your team.
3 customer connections freepay as you scaleno sales call required