What happens when a customer's endpoint is down?

Repost retries with backoff for roughly 24 hours and records every attempt. While the endpoint is down the backlog is held upstream, and it drains automatically when the endpoint comes back. Anything can be replayed from the portal, and nothing is dropped.

What if I send data that doesn't match the schema?

It's delivered anyway and flagged against the contract. Sending is never blocked on validation. Partly good data beats dropped data.

What does it cost after 50K events?

Plans include a pooled event quota: 200K events/mo on Starter, 2M on Pro. Overage is a flat per-1K rate and seats are included, with no per-seat add-ons. The pricing page has the full comparison.

Ship features, not webhook infrastructure.

Receive and send webhooks in minutes, not days.

Replay anytime.

One bucket, as many forwarders as you need. Each with its own rate, its own pause, its own DLQ.

A command center, not a log viewer.

Find one webhook among millions. Replay it in one click.

This is the real console, running on sample data. Hit Take over to drive it yourself.

Terminalrepost forward

Listening on acme-hooks.repost.sh

Forwarding to localhost:3000

Time	Method	Path	Dest	Code	Status	Duration
14:05:18.412	POST	/stripe/invoice.paid	/webhooks/stripe	200	SUCCESS	43ms
14:05:14.205	POST	/github/pull_request.opened	/webhooks/github	200	SUCCESS	95ms
14:05:11.998	POST	/stripe/charge.failed	/webhooks/stripe	402	FAILED	51ms
14:05:09.122	POST	/twilio/message.delivered	/webhooks/twilio	200	SUCCESS	58ms

Request

Content-Typeapplication/json

Stripe-Signaturet=1745064303,v1=4f8a7b…

User-AgentStripe/1.0

Body

{
  "id": "evt_1Q9aB2K8H4",
  "type": "invoice.paid",
  "data": {
    "amount_paid": 4900,
    "customer": "cus_QpL4Xz9"
  }
}

Response

Content-Typeapplication/json

X-Request-Idreq_a8f3e2c1

Body

{ "received": true }

Request body

{
  "id": "evt_1Q9aB2K8H4",
  "type": "invoice.paid",
  "data": {
    "amount_paid": 4900,
    "customer": "cus_QpL4Xz9"
  }
}

Zod

export const InvoicePaid = z.object({
  id: z.string(),
  type: z.literal("invoice.paid"),
  data: z.object({
    amountPaid: z.number(),
    customer: z.string(),
  }),
});

type InvoicePaid struct {
  ID   string `json:"id"`
  Type string `json:"type"`
  Data struct {
    AmountPaid int64 `json:"amount_paid"`
    Customer string `json:"customer"`
  } `json:"data"`
}

class InvoicePaid(BaseModel):
  id: str
  type: Literal["invoice.paid"]
  data: InvoicePaidData

CONNECTEDacme-hooks✓ 3✗ 1

↑/k browsespace inspectq quit

felipe-laptop

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Meet the CLI

Webhooks in, evidence kept

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Receiving is only half the story.

Webhooks come in. Webhooks go out.

Meet Repost Send.

The events you publish, defined once and delivered signed to every customer who subscribed.

See how it works

The journey

Send your own events. From schema to delivery.

Define the event, generate the client, deliver it signed, hand your customers the portal.

Make your own events schema.

Write your events like you would write types, with IntelliSense enabled. Each change becomes a migration you commit, review, and deploy like the rest of your code.

Webhook events as code

Contract

/// A customer joined the workspace
type Customer {
  created @map("created")
}

model Customer {
  id    String
  email String
  plan  Plan
}

event CustomerCreated {
  type @type(Customer.created)
  data Customer
}

event InvoicePaid {
  type @type(Invoice.paid)
  data Invoice

  @description(`**When this fires**
  - Card or ACH payment succeeds
  - Wire is matched to the invoice
  - Manual payment recorded`)
}

/// Customer invoice
model Invoice {
  id     String        @description("Unique id")
  status InvoiceStatus @description("Payment status")
  total  Money         @description("Total due")
  paidAt DateTime?     @map("paid_at")
}

schema validdeployed · registry v14

2
Send events with a typed client.
Repost generates the client from your schema in TypeScript, Go, Python, Java, Kotlin, or C#. Sending an event is one method call, and the description you wrote in the schema comes back to you on hover.
Sending webhooks, end to end
TSGenerated clientbilling.ts
12345678
```
await repost.webhooks.customer.created({
  customerId: customer.id,
  data: {
    id: user.id,
    email: user.email,
    plan: Plan.PRO,
  },
})
```
payload matches CustomerCreatedtypechecked
Signed, delivered, and stored.
Every request is signed. A failing one is retried for about a day, then parked in a dead-letter queue with its full attempt history. Nothing silently disappears.
Retries, logs, and replay
Signed delivery2xx512 ms10:42:31
POST https://acme.example.com/webhooks
webhook-id: msg_01HW8J9X1Z4F2Q6K7M8N9POR
webhook-timestamp: 1715697135
webhook-signature: v1,K5oZfzN95Z9UVu1EsfQmfVNQhnkZ2pj9…
attempt 1 · 200 OKevery attempt retained
Ship a customer portal.
Your customers connect endpoints, rotate secrets, inspect deliveries, and replay events in a portal branded as your product. No accounts to provision, no dashboard to build.
The portal your customers use
Customer endpointacme's portal
https://acme.example.com/webhooks active
Accepted
CustomerCreated received · signature verified
endpoints · secrets · historyreplay ↻

Delivered & verified

Write it once.

From the schema to your docs.

Deploying the schema publishes a fully themed event catalog on your own domain. Descriptions are part of the contract: when it fires, what the payload carries, who typically consumes it. Every event documented in full markdown.

Because the docs live in the schema, they ship through the same pull request as the change itself, reviewed like code, published on deploy, impossible to drift from production.

A page per event you send

Event catalogdocs.acme.dev

Invoice

Paid

invoice.paid

Emitted when an invoice is paid in full.

When this fires

Card or ACH payment succeeds
Wire payment is matched to the invoice
Manual payment is recorded by finance

Payload: Invoice with status PAID and paid_at timestamp.

Typical consumers

Payment receipt emails
Revenue recognition
Dunning workflow termination

invoice.paidTry it

Documentation

statusenum · InvoiceStatusrequired

Current invoice payment status

OptionsOPENPAIDVOID

totalMoneyrequired

Total amount due

paid_atstring · date-time

When payment was received

Generate typessample payload · cURL · signed test send

Contract sourcebilling.repost

event InvoicePaid {
  type      @type(Invoice.paid)
  data      Invoice
  timestamp DateTime

  @description(`Emitted when an invoice is paid in full.

**When this fires**
- Card or ACH payment succeeds
- Wire payment is matched to the invoice
- Manual payment is recorded by finance

**Payload:** `Invoice` with status `PAID` and `paidAt` timestamp.

**Typical consumers**
- Payment receipt emails
- Revenue recognition
- Dunning workflow termination`)
}

/// Customer invoice
model Invoice {
  id     String        @description("Unique invoice identifier")
  status InvoiceStatus @description("Current invoice payment status")
  total  Money         @description("Total amount due")
  paidAt DateTime?     @map("paid_at")
}

schema validdeploys to docs.acme.dev

Generated DTOs

export enum InvoiceStatus {
  OPEN = "OPEN",
  PAID = "PAID",
  VOID = "VOID",
}

export interface Invoice {
  id: string;
  status: InvoiceStatus;
  total: Money;
  paid_at?: string;
}

type InvoiceStatus string

const (
  InvoiceStatusOpen InvoiceStatus = "OPEN"
  InvoiceStatusPaid InvoiceStatus = "PAID"
  InvoiceStatusVoid InvoiceStatus = "VOID"
)

type Invoice struct {
  ID     string        `json:"id"`
  Status InvoiceStatus `json:"status"`
  Total  Money         `json:"total"`
  PaidAt *string       `json:"paid_at,omitempty"`
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub enum InvoiceStatus {
  #[serde(rename = "OPEN")] Open,
  #[serde(rename = "PAID")] Paid,
  #[serde(rename = "VOID")] Void,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Invoice {
  pub id: String,
  pub status: InvoiceStatus,
  pub total: Money,
  pub paid_at: Option<String>,
}

Generated from the contract

Your customers get typed DTOs in one click.

Every model and enum comes from the deployed schema, so integrators work against the exact payload shape before the first event arrives.

Built with Standard Webhooks.

One secure, interoperable delivery protocol. Repost handles the signing, retries, history, replay, and operational edge cases underneath it.

webhook-idwebhook-timestampwebhook-signature

See the standard

Before you ask

The questions everyengineer asks next.

What happens when a customer's endpoint is down?: Repost retries with backoff for roughly 24 hours and records every attempt. While the endpoint is down the backlog is held upstream, and it drains automatically when the endpoint comes back. Anything can be replayed from the portal, and nothing is dropped.
What if I send data that doesn't match the schema?: It's delivered anyway and flagged against the contract. Sending is never blocked on validation. Partly good data beats dropped data.
What does it cost after 50K events?: Plans include a pooled event quota: 200K events/mo on Starter, 2M on Pro. Overage is a flat per-1K rate and seats are included, with no per-seat add-ons. The pricing page has the full comparison.

Schema in, webhooks out

Your first event, live today.Not tomorrow.

Ship your whole webhook integration in minutes.

50K events/mo freeNo credit cardNo time limit

Start sending webhooks Read the docs

Ship features, not webhook infrastructure.

Does this setup look familiar?

Stripe, Shopify, Twilio, all pointed straight at your API.

It works great. Until it doesn't.

One bad deploy, and every webhook sent your way is lost forever, until your fix is deployed.

Repost catches every webhook.

On your best days, providers burst to thousands of requests a second.

Your forwarders will honor the rate limits you set.

Deploying? Pause. Nothing is lost.

Resume, and your backlog drains at your rate limit.

Failed deliveries retry themselves. The rest wait in the DLQ.