Embedded integrations for B2B SaaS & AI agents

Customer-facing integrations that stay working.

Embed once, inside your product. Integrations become configuration, fit to each customer's workflow, and we keep every connection running.

3 connections free · pay as you scale · no sales call required

SSalesforce
HHubSpot
SSlack
TMicrosoft Teams
GGmail
OOutlook
NNotion
DGoogle Drive
JJira
ZZendesk
QQuickBooks
SShopify
fastn
1000+ connectors184,209 syncs today
Connect a system
Build a workflow
Equip an agent
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Embed the UI
See how embedding works</> Build on the API

Trusted by customers and partners

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Recognized by

Three steps, then never again

One embed for you. A connect button for your customers. Integrations stop being your team's problem.

01 · You, once
Embed the connect UI
import { Fastn } from "@fastn/ucl"

<Fastn.Connect
  tenant={customer.id}
/>
02 · Your customers, self-serve
They connect their stack
Salesforceconnected ✓
NetSuiteconnected ✓
ServiceNowconnect →
03 · Then, forever
Data flows, monitored
synced 1,204 records → Salesforce
webhook delivered · 0 retries
token expiring, auto-renewed
1K+
Apps your customers can connect, inside your product
24/7
Every connection monitored, retried, and healed
58%
Less churn from integrated customers (Crossbeam, 2023)

Embed it once.
Integration becomes configuration.

fastn handles the plumbing (auth, mapping, retries, monitoring) so your customers just connect what they need and it works.

01

Every integration, already done

Your customers authorize the systems they run inside your product in minutes, including the bespoke integrations pre-built catalogs break on. Integration becomes configuration, with zero code per customer.

02

Say yes in the sales call

One embed lights up the whole connector catalog. "Do you support X?" stops being a roadmap conversation and becomes a toggle.

03

Let agents act without losing sleep

Your AI agents get permission-scoped, audited access to every connected system. Every call logged, bounded, and reversible.

04

Live the same day

What took weeks of custom build ships in hours. The integration backlog stops existing as a category of work.

05

Engineers back on product

After the one-time 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 systems your customers can't afford to get wrong.

See a failing sync
before your customer does.

Per-connection health, logs, and alerts inside your product. Integration stops being a black box.

Connection
Tenant
Last sync
Status
Salesforce
acme-prod
12s ago
healthy
NetSuite
borealis
40s ago
API change absorbed
HubSpot
corex-eu
1m ago
auto-retried · recovered
Zendesk
delta
5s ago
healthy

You shouldn't have to choose
between rigid and opaque.

The rigid option

A fixed, unified schema. Your customer's custom fields and objects don't fit, so every edge case falls back on your team.

The opaque option

A flexible black box. It works until it doesn't, and then you can't see why or explain it to your customer.

fastn: public and configurable

A documented, public surface that still shapes to your product and each customer's fields and workflow. No forks, no black box.

Whoever you are,
this is your bottleneck

For revenue teams

Stop losing deals to a missing integration

"Do you integrate with X?" becomes "yes", every time. Close the deals that used to die in security and stack review.

For customer success

Deliver what sales promised

Customers go live with the integrations they were sold, in days not quarters. Integrated customers stay, and churn drops by half.

For engineering

Get your roadmap back

One embed replaces the entire connector backlog. Your team ships product while customers configure their own integrations.

Connect the systems your customers actually run on

HubSpotSalesforcePipedriveSlackNetSuiteNotionJiraGoogle DriveSnowflakeZendeskServiceNowMarketoGmailPostgres+985 moreHubSpotSalesforcePipedriveSlackNetSuiteNotionJiraGoogle DriveSnowflakeZendeskServiceNowMarketoGmailPostgres+985 more

Never lose a deal
to a missing integration.

Embed fastn once and let your customers and your agents connect anything they need. No infrastructure to run, no per-customer builds.

Start freeBook a demo

3 connections free · pay as you scale · no sales call required