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Svix

Svix is an enterprise webhooks-as-a-service platform on the sending side of the webhook market. It provides a single API for delivering reliable, secure, low-latency webhooks at scale, with hosted UIs (Consumer App Portal), a polyglot SDK pipeline, an open source server, and adjacent products for streaming (Stream) and webhook ingestion (Ingest). Hosted offering is multi-region (US, EU, CA, AU, IN) with SOC 2 Type II, HIPAA, PCI-DSS attestations.

agent ready

Reference-quality API operations across every facet — a rich contract, published governance, transparent operations, and machine-readable commercial terms.

Kin Score

API Evangelist profiles Svix the way a machine reads it — 66 machine-readable artifacts across 21 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.

Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Svix scores 78.5/100 (exemplar), with a separate agent-readiness read of 48/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 78.5/100 · exemplar
Contract Quality 16.3 / 25
Developer Ergonomics 17.0 / 20
Commercial Clarity 20.0 / 20
Operational Transparency 6.2 / 13
Governance 10.4 / 12
Discoverability 8.8 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3

How we profile Svix

Each block below is one kind of artifact we hold for Svix. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

APIs 21

Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.

Individual APIs this provider publishes, each with its own machine-readable definition.

Svix Open Source Server API

The self-hostable open source Svix server (svix-webhooks repo). Smaller surface area than the hosted product (no Stream, no Ingest, no Connectors, no Background Tasks, no multi-...

Svix Application API

Consumer Applications are where messages are sent to. In most cases you would want to have one application for each of your users.

Svix Authentication API

Easily give your users access to our pre-built management UI.

Svix Background Task API

The background tasks that have been executed for your environment.

Svix Connector API

Connectors allow you to connect applications to external services.

Svix Endpoint API

Endpoints are the URLs messages will be sent to. Each application can have up to 50 endpoints and each message sent to that application will be sent to all of them (unless they ...

Svix Environment API

Manage your environments like development, staging and production.

Svix Event API

The Event API from Svix — 2 operation(s) for event.

Svix Event Type API

Event types are identifiers denoting the type of message being sent. Event types are primarily used to decide which events are sent to which endpoint.

Svix Health API

Health checks for the API.

Svix Ingest Endpoint API

Configure where Svix Ingest sends messages.

Svix Ingest Source API

The Ingest Source API from Svix — 4 operation(s) for ingest source.

Svix Integration API

Integrations are services your users connect an application to. An integration can manage the application and its endpoints.

Svix Message API

Messages are the webhook events being sent.

Svix Message Attempt API

Attempts to deliver `Message`s to `Endpoint`s.

Svix Sink API

The Sink API from Svix — 6 operation(s) for sink.

Svix Statistics API

Generate statistics about your Svix utilization

Svix Stream API

The Stream API from Svix — 2 operation(s) for stream.

Svix Stream Authentication API

The Stream Authentication API from Svix — 5 operation(s) for stream authentication.

Svix Stream Event Type API

The Stream Event Type API from Svix — 2 operation(s) for stream event type.

Svix Webhook Endpoint API

Configure where operational webhooks are sent to.

Scroll within the panel for all 21 ·

Postman Collections 1

A runnable collection turns the contract into something a developer can execute in seconds. We profile them because the fastest way to trust an API is to make a real call against it.

Ready-to-run Postman collections for exercising this provider's APIs.

Svix API

POSTMAN

Open Collections 1

Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Svix API

OPEN COLLECTION

Arazzo Workflows 15

Real integrations are rarely a single call. Arazzo describes the multi-step sequences — auth, then create, then confirm — so both a human and an agent can follow the choreography, not just the endpoints.

Multi-step API workflows described with the Arazzo specification.

Svix Provision Application and Open App Portal

Create an application and mint a magic-link URL into its embedded App Portal.

ARAZZO

Svix Create Integration and Retrieve Key

Create an integration on an application and read back its API key.

ARAZZO

Svix Decommission an Application

List an application's endpoints, branch on whether one exists, delete it, then delete the application.

ARAZZO

Svix Endpoint Health Check

Send an example message to an endpoint and read its delivery statistics.

ARAZZO

Svix Create Ingest Source and Endpoint

Create an ingest source, attach an ingest endpoint, and read back the source's ingest URL.

ARAZZO

Svix Set Up Operational Webhook Endpoint

Register an operational webhook endpoint and retrieve its signing secret.

ARAZZO

Svix Provision Application and Send First Message

Create an application, register a webhook endpoint, send a message, and inspect the delivery attempts.

ARAZZO

Svix Recover Failed Webhooks

Trigger recovery of an endpoint's failed messages and poll the background task to completion.

ARAZZO

Svix Register Event Type and Send Example

Create an event type, subscribe an endpoint to it, and send the event type's example message.

ARAZZO

Svix Resend a Failed Message Attempt

Find a failing delivery attempt for a message and resend it to its endpoint.

ARAZZO

Svix Rotate Endpoint Signing Secret

Rotate a webhook endpoint's signing secret and read back the new secret value.

ARAZZO

Svix Rotate Ingest Source Token

Rotate an ingest source's token and return its refreshed ingest URL.

ARAZZO

Svix Rotate Integration Key

Rotate an integration's API key and read back the new key value.

ARAZZO

Svix Send Message and Confirm Delivery

Send a message to an existing application and poll its attempts until delivery succeeds.

ARAZZO

Svix Create Stream with Poller Sink and Send Events

Create a stream, attach a poller sink, publish events, and poll the sink for them.

ARAZZO

Scroll within the panel for all 15 ·

Pricing Plans 1

Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.

Published pricing tiers and plan structures.

Svix Plans Pricing

3 plans

PLANS

Rate Limits 1

Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.

Documented rate limits and quota policies.

Svix Rate Limits

0 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.

Cost, billing, and metering signals for API financial operations.

Svix Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Svix Context

38 classes · 9 properties

JSON-LD

Spectral Rules 2

Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.

Svix API Rules

5 rules · 3 warnings

SPECTRAL

Svix API Rules

14 rules · 4 errors · 8 warnings

SPECTRAL

JSON Schema 5

Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.

Standalone JSON Schema definitions for this provider's data models.

Svix Application

8 properties

JSON SCHEMA

Svix Endpoint

12 properties

JSON SCHEMA

Svix Event Type

9 properties

JSON SCHEMA

Svix Message Attempt

11 properties

JSON SCHEMA

Svix Message

8 properties

JSON SCHEMA

JSON Structure 4

JSON Structure captures the data shapes in a form built for tooling — a complement to JSON Schema that keeps the model machine-legible.

JSON Structure definitions describing this provider's data shapes.

Svix Application Structure

0 properties

JSON STRUCTURE

Svix Endpoint Structure

0 properties

JSON STRUCTURE

Svix Event Type Structure

0 properties

JSON STRUCTURE

Svix Message Structure

0 properties

JSON STRUCTURE

Examples 8

Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.

Example request and response payloads for these APIs.

Scroll within the panel for all 8 ·

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Svix Authentication

http · 1 scheme

SECURITY

Svix Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Svix Vulnerability Disclosure

security.txt · contact published

SECURITY

Svix Trust Center

SOC 2, PCI DSS, HIPAA, GDPR

SECURITY

Agentic Access 1

An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.

Recommended x-agentic-access execution contracts for AI agents.

Svix Agentic Access

128 operations · 79 acting

128 operations · 79 acting

AGENTIC

Resources

Every other property we hold for Svix — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

Documentation 3

Reference material describing how the API behaves

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

Learn 1

Tutorials, courses, talks, and written guidance

Company 2

The organization behind the API

Other 3

Properties that don't map to a standard resource type

← All providers · Data indexed from github.com/api-evangelist/svix · machine-readable index on apis.io