# ThredUp

**Canonical:** https://apis.io/providers/thredup/  
**Website:** http://www.thredup.com/  
**APIs profiled:** 0

ThredUp (NASDAQ: TDUP) is one of the world's largest online resale and consignment platforms for secondhand women's and kids' clothing, shoes, and accessories. Founded in 2009 and headquartered in Oakland, CA, it lets consumers buy and sell pre-owned fashion via mailed Clean Out Kits, and powers branded recommerce for 60+ retailers through its Resale-as-a-Service (RaaS) platform. ThredUp does not publish a public developer API or OpenAPI; RaaS integrations are arranged through its partner sales team, so this API Evangelist profile captures the company's public web, engineering, and policy surface rather than a documented API program.

## Kin Score — 11.7 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 11.7).

| Facet | Score |
|---|---|
| Discoverability | 57.4 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 7.1 |
| Commercial Clarity | 21.1 |
| Access Clarity | 21.1 |

## Agent readiness — 0.0 (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 | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Requires approval — onboarding: approval, pricing: unknown, trial: no (confidence: medium).

## Security (1)

- **Thredup Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Company, E-Commerce, Resale, Secondhand, Fashion, Consignment, Sustainability, Retail

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