# Tradeblock

**Canonical:** https://apis.io/providers/tradeblock/  
**Website:** https://www.tradeblock.us/  
**APIs profiled:** 0

Tradeblock (operated by Astrolab, Inc. d/b/a Tradeblock, founded 2019) is a mobile-first, peer-to-peer sneaker trading marketplace that lets collectors use their sneakers as currency. Members build a Closet and Wishlist, browse a feed of public and private trade offers, and swap sneakers with other collectors, balancing uneven trades with cash. Every trade routes through Tradeblock's authentication centers, where shoes are verified for authenticity before shipping to each party. The service also surfaces supply-and-demand signals for individual sneaker models. Tradeblock is a consumer app (iOS, Android, and web) backed by Andreessen Horowitz (a16z), Trinity Ventures, and DCVC; it does not publish a public developer API, SDKs, or a developer portal at this time.

## Kin Score — 9.6 / 100 (minimal)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 9.6).

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

Regulatory layer — **Securities & Market Data**: 23.3 (matched via weak_tags).

## 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

Unknown — onboarding: unknown, pricing: unknown, trial: no (confidence: low).

## Security (1)

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

## Tags

Company, Sneakers, Marketplace, Trading, Consumer, E-Commerce, Mobile App, Authentication, Resale

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