# JOLYN

**Canonical:** https://apis.io/providers/jolynclothing/  
**Website:** https://jolyn.com  
**APIs profiled:** 1

JOLYN is an athletic swimwear and apparel brand for competitive and team swimming, water polo, and aquatics, known for durable, functional practice and racing suits, team uniforms, and active lifestyle apparel. Surfaced as a portfolio company of Norwest Venture Partners and added to the API Evangelist network, JOLYN publishes no first-party developer API — its direct-to-consumer storefront at jolyn.com (jolynclothing.com redirects here) is Shopify-hosted. That platform exposes a genuine agent-native commerce surface: a published /llms.txt with agent instructions, OpenID Connect discovery for the Shopify Customer Account API, and a live Universal Commerce Protocol (UCP) MCP endpoint for buyer-approved, agent-driven shopping and checkout.

## Kin Score — 15.3 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+1.1 from 14.2).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 11.9 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

## Agent readiness — 18.8 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | verified |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (1)

- **JOLYN UCP Agent Commerce (Shopify)** — Shopify-served Universal Commerce Protocol MCP endpoint for the JOLYN store, enabling buyer-approved agent-driven catalog search, cart, and checkout. Advertised in /.well-known/...

## MCP servers (1)

- **JOLYN MCP Server**

## Security (2)

- **Jolynclothing Authentication** — openIdConnect/oauth2 · 1 scheme
- **Jolynclothing Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, Retail, E-Commerce, Apparel, Swimwear, Direct to Consumer, Shopify, Agentic Commerce

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