# X2Y2

**Canonical:** https://apis.io/providers/x2y2/  
**APIs profiled:** 8

X2Y2 is an NFT marketplace and trading platform on Ethereum offering REST APIs for querying listings, offers, sales history, collection statistics, and executing NFT trades. It provides one of the lowest marketplace fees in the industry at 0.5% and includes an NFT-backed lending (Fi) API suite alongside its core marketplace API.

## Kin Score — 28.1 / 100 (thin)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 28.1).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 55.6 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 35.7 |
| Commercial Clarity | 0.0 |
| Access Clarity | 0.0 |

Regulatory layer — **Securities & Market Data**: 28.3 (matched via weak_tags).

## Agent readiness — 21.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | documented |
| MCP Server | no |
| Auth Clarity | bearer |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | partial |
| 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 |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

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

## APIs (8)

- **X2Y2 Chain API** — The Chain API from X2Y2 — 4 operation(s) for chain.
- **X2Y2 Contracts API** — The Contracts API from X2Y2 — 2 operation(s) for contracts.
- **X2Y2 Events API** — The Events API from X2Y2 — 1 operation(s) for events.
- **X2Y2 General API** — The General API from X2Y2 — 1 operation(s) for general.
- **X2Y2 Loan API** — The Loan API from X2Y2 — 1 operation(s) for loan.
- **X2Y2 Offer API** — The Offer API from X2Y2 — 4 operation(s) for offer.
- **X2Y2 Offers API** — The Offers API from X2Y2 — 1 operation(s) for offers.
- **X2Y2 Orders API** — The Orders API from X2Y2 — 4 operation(s) for orders.

## Agentic access (1)

- **X2Y2 Agentic Access** — 18 operations · 9 acting

## Security (2)

- **X2Y2 Authentication** — apiKey · 3 schemes
- **X2Y2 Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

NFT, Ethereum, Marketplace, Blockchain, Web3, Collectibles, Trading

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/x2y2/). Scores are computed from the provider's own public artifacts under a published rubric.