# Fusio

**Canonical:** https://apis.io/providers/fusio/  
**APIs profiled:** 3

Fusio is an open source API management platform which helps to build and manage REST APIs. It provides capabilities for creating, managing, and documenting APIs with a built-in developer portal, marketplace, and support for multiple programming languages through worker processes.

## Kin Score — 20.2 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 20.2).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 35.7 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 2.5 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (3)

- **Fusio Backend API** — The Fusio Backend API provides a REST interface to configure and manage all aspects of a Fusio API management instance. It covers operations, routes, schemas, actions, connectio...
- **Fusio Consumer API** — The Fusio Consumer API is used by the developer portal application and enables third-party developers to request access tokens, manage their apps, and interact with protected AP...
- **Fusio Worker API** — The Fusio Worker API enables executing API action logic in multiple programming languages by forwarding requests to external worker processes. Workers are implemented in the tar...

## Security (1)

- **Fusio Domain Security** — TLSv1.3 · DMARC

## Plans (1)

- **Fusio Plans Pricing**

## Use cases (4)

- **API Product Building** — Build and publish API products with documentation, authentication, and developer onboarding.
- **Microservices Gateway** — Use Fusio as an API gateway in front of microservices for unified access control.
- **Data Integration** — Connect to databases and external APIs to build data integration endpoints.
- **Serverless API Backend** — Build API backends that execute logic in multiple languages without managing servers.

## Tags

API Management, Open-Source, REST API

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/fusio/). Scores are computed from the provider's own public artifacts under a published rubric.