Barbacane

Barbacane is an open-source API gateway built in Rust that uses OpenAPI and AsyncAPI specifications as the single source of truth. It handles routing, validation, authentication, and event bridging based on your specs.

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At a glance

Pricing

Open Source · Freemium · Paid

Free tier

Yes

API

Yes

Skill level

Technical

About

What is Barbacane?

Barbacane is a spec-driven API gateway built in Rust, designed to eliminate configuration drift by using OpenAPI and AsyncAPI specifications as the single source of truth for routing, validation, authentication, authorization, and event bridging. It offers automatic JSON Schema validation, five built-in authentication plugins (JWT, OIDC, OAuth2, API Key, Basic Auth), and blazing-fast performance due to its Rust foundation. The gateway is extensible with 29 official WebAssembly plugins for various functionalities like security, traffic control, and observability. It supports AsyncAPI for event bridging to systems like Kafka, NATS, or AWS Lambda, and features a split control and data plane architecture for resilience and zero-downtime deployments. Barbacane is open source under AGPLv3, with commercial licensing options available.

Best used for

Ideal for platform teams building internal developer platforms, API product companies exposing public APIs, and enterprises modernizing their API infrastructure. Especially valuable for ensuring consistent API standards, enforcing contracts, and achieving zero-downtime deployments with a spec-first approach.

Common actions

manage APIs

validate API requests

secure API access

bridge API events

deploy API gateway

techGitHubopen-sourceAPI

Capabilities

Key features

Spec-driven configuration
Automatic JSON Schema validation
Built-in authentication plugins
WebAssembly plugin extensibility
AsyncAPI event bridging
Split control/data plane
FIPS 140-3 Ready

Target Audience

developerproduct managerstartup founder

Integrations

githubprometheusopentelemetrykafkanatsaws-lambdaopen-policy-agent

Pricing & Plans

Open Source · Freemium · Paid

Not publicly disclosed. Check barbacane.dev for current pricing.

FAQs

What is the difference between the AGPLv3 and Commercial licenses for Barbacane?

The AGPLv3 license is free to use, but requires you to publish source modifications if you distribute the software. The Commercial license allows you to keep your source private and is free for small teams/non-profits, or paid for larger organizations that don't qualify for the free tier.

Does Barbacane offer professional services like consulting or support?

Yes, Barbacane provides professional services including expert consulting for architecture and migration, SLA-backed pro support with direct maintainer access, and hands-on training workshops for teams. These services are available regardless of your chosen license.

Can Barbacane be deployed on-premise or at the edge?

Barbacane is designed for flexible deployment, capable of running anywhere including on-premise, in your cloud, or at edge locations. Its lightweight compiled artifacts make it suitable for various infrastructure and security requirements.

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