# Express

**Canonical:** https://apis.io/providers/express/  
**Website:** https://expressjs.com  
**APIs profiled:** 1

Express is a fast, unopinionated, minimalist web framework for Node.js, providing a robust set of features for building web and mobile applications and APIs. Maintained under the OpenJS Foundation, Express is one of the most widely used HTTP server frameworks in the JavaScript ecosystem.

## Kin Score — 13.6 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 13.6).

| Facet | Score |
|---|---|
| Discoverability | 66.7 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 10.5 |
| 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 (1)

- **Express** — Express is a minimal and flexible Node.js web application framework that provides a robust set of features for web and mobile applications, including routing, middleware support...

## Security (2)

- **Express Domain Security** — TLSv1.3 · DNSSEC
- **Express Vulnerability Disclosure** — security.txt · contact published

## Plans (1)

- **Express Plans Pricing**

## Tags

Express.js, Framework, HTTP, Middleware, Node.js, Open-Source, Web Framework, Fortune 1000

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