Webhook Relay
Webhook Relay provides a webhook gateway and forwarding service that enables developers to receive, transform, and reliably deliver webhooks to any destination, including private on‑prem servers, without exposing them to the internet. It offers persistent public URLs, durable retries, scheduling, email‑to‑webhook, custom domains, and a rich CLI, Docker image, and Kubernetes operator. Free tier with no credit card required and paid plans starting at $9.99/month, SOC 2 Type II compliance, and enterprise self‑hosted options.
Webhook Relay publishes 9 API contracts indexed on the APIs.io network, including Buckets API, Domains API, Functions API, and 6 more. Tagged areas include Company, Webhook, API Gateway, Integration, and Developer Tools.
The Webhook Relay catalog on APIs.io includes 1 Spectral governance ruleset.
Webhook Relay’s developer surface includes CLI, authentication, pricing, changelog, engineering blog, getting-started guide, documentation, and 21 more developer resources.
Kin Score
Standards implemented 3
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 9
Individual APIs this provider publishes, each with its own machine-readable definition.
Webhook Relay API
API for managing tunnels, webhooks, tokens, and functions.
Webhook Relay Buckets API
Input and output grouping. Bucket allows to have multiple endpoints for the same destination or multiple destinations for fan-out style webhook forwarding.
Webhook Relay Domains API
The Domains API from Webhook Relay — 2 operation(s) for domains.
Webhook Relay Functions API
Webhook Relay Functions provide an easy way to extract values from webhooks and transform HTTP requests before passing them to their final destination. Function can be reused by...
Webhook Relay Inputs API
Inputs are your public endpoints. Each input serves as an inbox that you can supply to your webhooks producer (ie: Github, Docker, IFTTT)
Webhook Relay Logs API
Webhook logs hold the status of received and forwarded webhooks. You can use this API group to resend webhooks to one or more destinations
Webhook Relay Outputs API
Outputs are destinations, where your webhooks will be forwarded. Public destinations do not require agents to be running. Internal outputs will not work without an agent.
Webhook Relay Tokens API
Token key & secret pairs are used to authenticate your API calls or for agents to subscribe to webhook forwarding or open tunnels.
Webhook Relay Tunnels API
Tunnels allow remote access to internal web services such as local Wordpress, Jekyll or Hexo. Recommended `crypto` options are `flexible` or `tls-pass-through`.
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Webhook Relay API pricing
Prices published by Webhook Relay, read 2026-10-13 from webhookrelay.com/pricing/.
| Plan | Price |
|---|---|
| Free Starter | $0.00/month |
| Basic | $8.99/month |
| Business | $71.99/month |
| Pro | $224.99/month |
| Enterprise | Contact Us |
Plan details, limits and sources →
Rate limits
- Outbound throttle cap: cap 50/s
Billed by: seat · FinOps profile →
Pricing Plans 2
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Webhook Relay Rate Limits
RATE LIMITSService Levels 1
Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.
FinOps 1
Cost, billing, and metering signals for API financial operations.
Webhook Relay Finops
FINOPSSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Webhook Relay API Rules
SPECTRALSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Get Started 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 3
Status, limits, changes, and where to get help
Commercial 4
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 2
Properties that don't map to a standard resource type
Source (apis.yml)
Webhook Relay API — frequently asked questions
Does Webhook Relay have an API?
Yes. APIs.io lists 9 APIs from Webhook Relay, including Webhook Relay API, Webhook Relay Buckets API and Webhook Relay Domains API, and 6 more.
Is there an OpenAPI specification for the Webhook Relay API?
Yes. APIs.io indexes 8 OpenAPI specifications for Webhook Relay, each linked for download from this page.
How do I authenticate with the Webhook Relay API?
Webhook Relay documents its authentication (1 scheme). The details are profiled on APIs.io as Webhook Relay Authentication.
How much does the Webhook Relay API cost?
Webhook Relay publishes its prices; its Free Starter plan is $0.00/month as of 2026-10-13. APIs.io lists 5 pricing plans for Webhook Relay, with each plan's price, limits and inclusions under Pricing on this page.
Is the Webhook Relay API ready for AI agents?
Webhook Relay has a Kin Score of 47.9 out of 100 (developing) and an Agent Readiness score of 41.1 (agent-ready), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.