# FlowRelay — Workflow Automation | EternalEngine

FlowRelay is EternalEngine's workflow engine — build trigger-and-action chains linking your apps and third-party tools, no code required. Business tier.

FlowRelay — Workflow Automation

Business

# Your apps, wired together. Automatically.

FlowRelay is the workflow engine for EternalEngine. Build trigger-and-action chains that connect your apps to each other and to third-party tools — no code. Inbound webhooks are signature-verified, outbound calls are guarded against internal-network abuse, and every run is scoped to your tenant.

[Start free](https://app.eternalengineos.io/signup?plan=business&interval=annual)[Request a Demo](https://eternalengineos.io/demo/)

Trigger → action chainsSignature-verified webhooksNo code required

Click to enlargeAutomate follow-ups without writing code.

Trigger to done in four moves

## How a flow comes to life.

A workflow is a trigger plus an ordered set of actions. FlowRelay owns the whole motion — listen for the event, run the steps, pass the result along.

01

### Pick a trigger

Start the chain on an event — a webhook arrives, a deal moves stage, an invoice gets paid. The trigger is what wakes the workflow up.

02

### Chain the actions

Add steps in order: connect an integration, call an API, forward the event to another app. Each step passes its result to the next.

03

### Connect & verify

Wire in third-party connectors. FlowRelay verifies inbound webhook signatures and blocks outbound calls to private addresses before any step runs.

04Auto

### Runs on its own

Once saved, the chain fires every time its trigger matches — idempotent per event, scoped to your tenant. No babysitting, no manual re-runs.

Capabilities

## An automation engine, not a toy.

Trigger-and-action chains, third-party connectors, signature-verified webhook ingestion, and event forwarding — all guarded by the same tenant-isolation and input-validation rules every EternalEngine service runs under.

### Trigger & Action Chains

Build n8n-style workflows: one trigger, an ordered set of actions. Each step passes its output to the next. Save it once and it runs every time the trigger matches.

### Webhook Ingestion

Receive events from outside tools. Payloads are HMAC signature-verified when a secret is configured, and each event is idempotent per provider key — replays never double-fire your flow.

### SSRF-Guarded Connectors

Connect to third-party APIs and OAuth providers. Outbound base URLs are validated against private IP ranges before a call goes out, so a flow can't be turned against your internal network.

### Event Forwarding

Pipe platform events out to the systems that need them — or hand them to another EternalEngine app as the next step. The connective tissue between what happens and what should happen next.

### Tenant-Safe by Default

Every flow runs against your tenant only — the boundary comes from your authenticated session, never a request field. All connection configs are validated and stored encrypted.

### The Connective Layer

A paid invoice triggers a receipt through PostFrame. A new deal in ClientForge kicks off an outreach step. FlowRelay is the wiring that lets one event in any app set off the right action everywhere else.

What it actually does

## Automation that's real, not hand-wavy.

Every claim below maps to how FlowRelay is built — not marketing.

1+N

One trigger, N ordered actions per flow

HMAC

Signature-verified inbound webhooks

0

Lines of code to wire two apps together

100%

Outbound calls SSRF-checked before they fire

### Business tier

FlowRelay ships on Business ($199/mo, 15 users) — it's the tier built for teams who automate across their whole stack. Business includes everything in Pro plus FlowRelay, forecasting and lead scoring, white-label branding, and SSO / SAML. Not available on Basic, Team, or Pro.

[See plan comparison](https://eternalengineos.io/pricing/)

One OS · Apps that compound

## Better together. By design.

FlowRelay is the wiring between every other app: it listens for events — a paid PayGate invoice, a new ClientForge deal, a signed SignSeal envelope — and fires the next action, like sending mail through PostFrame, no code in between.

[ScrollForgeIn-App Store](https://eternalengineos.io/features/scrollforge/)[ClientForgeCRM](https://eternalengineos.io/features/clientforge/)[ThreadRealmCommunity Forums](https://eternalengineos.io/features/threadrealm/)[PostFrameEmail Delivery](https://eternalengineos.io/features/postframe/)[PayGatePayments](https://eternalengineos.io/features/paygate/)[NeuralGridAI Command Center](https://eternalengineos.io/features/neuralgrid/)[BookSlotScheduling](https://eternalengineos.io/features/bookslot/)[WikiShelfKnowledge Base](https://eternalengineos.io/features/wikishelf/)[BidForgeEstimates & Proposals](https://eternalengineos.io/features/bidforge/)[ProjectPathProjects & Time](https://eternalengineos.io/features/projectpath/)[AssetVaultFile Storage](https://eternalengineos.io/features/assetvault/)[TitanLedgerInvoicing & Books](https://eternalengineos.io/features/titanledger/)[NotifyStackNotification Orchestration](https://eternalengineos.io/features/notifystack/)[CrewGridField Service Dispatch](https://eternalengineos.io/features/crewgrid/)[StockShelfInventory Management](https://eternalengineos.io/features/stockshelf/)[SignSealDigital Signatures](https://eternalengineos.io/features/signseal/)

[See the full platform](https://eternalengineos.io/features/)

Questions

## Common questions, straight answers.

### Keep exploring

- [NotifyStack notifications](https://eternalengineos.io/features/notifystack/)
- [PostFrame email](https://eternalengineos.io/features/postframe/)
- [PayGate payments](https://eternalengineos.io/features/paygate/)
- [Plans and pricingFree to start; every paid plan has a 30-day free trial.](https://eternalengineos.io/pricing/)

Which plan includes FlowRelay?

Business. Team and Pro include simpler workflow rules and scheduled actions; the full trigger-and-action builder with connectors is Business.

Do I need to write code?

No. Pick a trigger, add actions in order and save. Recipes give you pre-built flows such as welcome new leads and invoice follow-up to start from.

What can trigger a flow?

Events inside EternalEngine such as a paid invoice, a new deal or a signed envelope, an inbound webhook from another tool, or a schedule.

What if a step fails?

Each run is recorded on the executions page with its status and output, and inbound events are idempotent so a replay never double-fires.

## Run your business from one place.

Five plans, seventeen launch apps, one dashboard. Set up in under 5 minutes — change tiers any time.

[Start free$0 forever • No card • Upgrade any time](https://app.eternalengineos.io/signup?plan=free&interval=annual)[Talk to Sales](https://eternalengineos.io/contact/)

From $0 · Basic $9.95/mo · Save 20% on annual billing · Upgrade or downgrade any time