Freedom251 › Webhook Management Software
RelayKit
What RelayKit is
RelayKit is a cloud service and API for capturing, inspecting, verifying, storing, and forwarding webhook events from third-party services. It can send an incoming event to multiple destinations in parallel, tracking each delivery separately. Failed deliveries are retried automatically for up to 20 attempts, and events can also be replayed manually. Inbound signature verification supports Stripe, GitHub, Shopify, Twilio, SendGrid, Paddle, Clerk, and Resend. Other controls include IPv4 and IPv6 IP allowlisting, configurable rate limits, and audit records for rejected requests. RelayKit says it forwards the original request body and headers, except for specified hop-by-hop headers. Hobby is free and allows 1,000 webhooks per month; Pro costs $9 a month for up to 100,000; Team costs $29 a month for up to 500,000. Team adds Schema Sentinel payload monitoring, Time Machine replay, and priority support. The @relaykit/cli can forward webhooks to a local development server and requires Node.js 18 or later.
Who it suits
Hobby is described for side projects and local development, Pro for solo developers shipping real products, and Team for teams with serious webhook volume. The CLI requires Node.js 18 or later.
What it does well
- Free Hobby plan allows 1,000 webhooks monthly
- Tracks and retries destinations independently
- Supports manual replay and up to 20 retry attempts
- Provides signature verification for listed services
What to know first
- Hobby retains logs for 24 hours
- Hobby is limited to one project
- Local CLI requires Node.js 18 or later
Limits
Hobby includes 1,000 webhooks per month, one project and 24-hour log retention. Pro allows 100,000 webhooks per month across five projects with 30-day log retention; Team allows 500,000 across 20 projects with 90-day log retention.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Hobby | 1,000 webhooks/month · 1 project · 24-hour log retention · signature verification · manual replay · local dev tunnel CLI | Free |
| Team | Recurring monthly · 500,000 webhooks/month · 20 projects · 90-day log retention · includes Pro features · Schema Sentinel · Time Machine replay · priority support · 14-day free trial | $29 a month |
| Pro | Recurring monthly · 100,000 webhooks/month · 5 projects · 30-day log retention · up to 20 retries · IP allowlisting · rate limiting · email and Slack incident alerts · fan-out routing · 14-day free trial | $9 a month |
As relaykit.io lists them, read 8 Oct 2026. The maker's own page has the final word.
Getting started
- Visit https://relaykit.io/ and choose Hobby, Pro or Team.
- Use the 14-day free trial with Pro or Team, if desired.
- Configure inbound signature verification for a supported service.
- Set destinations for parallel delivery and configure available security controls.
- For local development, install the @relaykit/cli and use Node.js 18 or later.
Verdict
RelayKit combines webhook delivery, verification, retries, and replay, with allowances and retention that vary by plan. Check monthly event volume, project count, and log retention against your needs.
Questions
How much does RelayKit cost?
Hobby is free. Pro costs $9 a month, and Team costs $29 a month.
Is there a free plan or trial?
Yes. Hobby is free, and Pro and Team include a 14-day free trial.
What platforms does RelayKit support?
RelayKit is offered as an API and on the web. Its CLI can forward webhooks to a local development server and requires Node.js 18 or later.
Which services support inbound signature verification?
Stripe, GitHub, Shopify, Twilio, SendGrid, Paddle, Clerk and Resend are supported.
What are the monthly webhook allowances?
Hobby includes 1,000 webhooks per month, Pro 100,000 and Team 500,000.
Who operates RelayKit?
The terms state that RelayKit is operated by IOGravity.
Facts from RelayKit's own pages
- Fan-out
- RelayKit can deliver each incoming webhook to multiple destinations in parallel, tracking and retrying each destination independently. · relaykit.io, 8 Oct 2026
- Integrations
- Inbound signature verification supports Stripe, GitHub, Shopify, Twilio, SendGrid, Paddle, Clerk, and Resend. · relaykit.io, 8 Oct 2026
- Local development
- The published @relaykit/cli can forward webhooks to a local development server; the documentation says it requires Node.js 18 or later. · relaykit.io, 8 Oct 2026
- Operator
- The terms state that RelayKit is operated by IOGravity. · relaykit.io, 8 Oct 2026
- Payload handling
- RelayKit says it forwards the original request body and headers without modifying them, apart from specified hop-by-hop headers. · relaykit.io, 8 Oct 2026
- Plan limits
- The listed monthly webhook allowances are 1,000 for Hobby, 100,000 for Pro, and 500,000 for Team. · relaykit.io, 8 Oct 2026
- Retries and replay
- RelayKit automatically retries failed deliveries, with up to 20 attempts, and supports manual replay. · relaykit.io, 8 Oct 2026
- Schema monitoring
- Schema Sentinel detects changes in webhook payload structure and is listed as a Team feature. · relaykit.io, 8 Oct 2026
- Security
- The service offers inbound signature verification, IPv4 and IPv6 IP allowlisting, configurable rate limits, and audit records for rejected requests. · relaykit.io, 8 Oct 2026
- Support
- The Team plan includes priority support. · relaykit.io, 8 Oct 2026
- What it does
- RelayKit captures, inspects, verifies, stores, and forwards webhook events from third-party services. · relaykit.io, 8 Oct 2026
- Who it is for
- The maker describes Hobby as suited to side projects and local development, Pro to solo developers shipping real products, and Team to teams with serious webhook volume. · relaykit.io, 8 Oct 2026
Where RelayKit stands on Freedom251
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