Curtsy

Curtsy is a mobile-first resale marketplace for secondhand women's fashion, focused on Gen Z and young-millennial shoppers roughly ages 15 to 30. Through its free iOS and Android apps, users buy and sell trending clothing, shoes, and accessories from brands like Lululemon, Free People, and SKIMS, saving up to 70% off retail. Curtsy holds no inventory of its own — sellers ship directly to buyers using prepaid shipping labels and free Curtsy-branded starter kits — and the company earns a 20% fee on each completed sale. Founded in 2016 as part of Y Combinator's Summer 2016 batch and headquartered in San Francisco, Curtsy has raised venture funding from Canaan Partners and Index Ventures. Curtsy is a consumer app with no public developer API, SDKs, or documentation surface at this time.

Curtsy is profiled on the APIs.io network. Tagged areas include Company, Resale, Marketplace, Fashion, and E-commerce.

Curtsy’s developer surface includes engineering blog, support, signup flow, and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub

14.9/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

0 APIs

CompanyResaleMarketplaceFashionE-commerceSecondhandConsumerMobile

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 14.9/100 · minimal

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 6.8 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/curtsy: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: curtsy
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/curtsy.png
name: Curtsy
description: Curtsy is a mobile-first resale marketplace for secondhand women's fashion, focused on Gen Z and young-millennial
  shoppers roughly ages 15 to 30. Through its free iOS and Android apps, users buy and sell trending clothing, shoes, and
  accessories from brands like Lululemon, Free People, and SKIMS, saving up to 70% off retail. Curtsy holds no inventory of
  its own — sellers ship directly to buyers using prepaid shipping labels and free Curtsy-branded starter kits — and the company
  earns a 20% fee on each completed sale. Founded in 2016 as part of Y Combinator's Summer 2016 batch and headquartered in
  San Francisco, Curtsy has raised venture funding from Canaan Partners and Index Ventures. Curtsy is a consumer app with
  no public developer API, SDKs, or documentation surface at this time.
url: https://raw.githubusercontent.com/api-evangelist/curtsy/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- canaan-partners
- index-ventures
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Resale
- Marketplace
- Fashion
- E-commerce
- Secondhand
- Consumer
- Mobile
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://curtsyapp.com/
- type: Blog
  url: https://blog.curtsyapp.com/
- type: Support
  url: https://curtsyapp.com/faq
- type: TermsOfService
  url: https://curtsyapp.com/terms
- type: PrivacyPolicy
  url: https://curtsyapp.com/privacy
- type: SignUp
  url: https://apps.apple.com/us/app/id1029107786
- type: DomainSecurity
  url: security/curtsy-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence