# Connexion

**Canonical:** https://apis.io/providers/connexion/  
**Website:** https://connexion.readthedocs.io/  
**APIs profiled:** 2

Connexion is an open source Python framework that automatically handles HTTP requests based on OpenAPI specifications. Connexion 3 provides AsyncApp, FlaskApp, and ConnexionMiddleware as primary entry points, with built-in routing, request and response validation, parameter parsing, security enforcement, content negotiation, error handling, lifespan, and Swagger UI integration. Connexion takes a contract-first, design-first approach: the OpenAPI specification is the source of truth and Python handlers are resolved from operationId or via configurable resolvers.

## Kin Score — 15.8 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 15.8).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 26.3 |
| Developer Ergonomics | 11.9 |
| Commercial Clarity | 15.8 |
| Access Clarity | 15.8 |

## Agent readiness — 3.0 (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 |

## Access

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

## APIs (2)

- **Connexion Python Framework** — Connexion is a contract-first Python web framework that loads an OpenAPI specification and routes requests to Python handlers based on operationId. It performs request validatio...
- **Connexion Middleware Stack** — Connexion 3 introduces a stack of pluggable ASGI middlewares that handle exceptions, server errors, lifespan, security, routing, request validation, response validation, Swagger...

## Security (1)

- **Connexion Domain Security** — TLSv1.3 · HSTS

## Plans (1)

- **Connexion Plans Pricing**

## Tags

API Design, ASGI, Design-First, Flask, OpenAPI, Python, Validation, WSGI

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