# 0xArchive

**Canonical:** https://apis.io/providers/0xarchive/  
**Website:** https://0xarchive.io/  
**APIs profiled:** 1

0xArchive is a replayable market-data archive for two decentralised perpetuals venues, Hyperliquid and Lighter, delivered as one REST API, one WebSocket API that carries both live subscriptions and historical replay on a single connection, bulk Parquet export, and a hosted MCP server. Hyperliquid coverage is split into four route families - core perpetuals, Spot, HIP-3 builder perps and HIP-4 binary outcome markets - each with its own symbol format and its own set of available data types. Beyond order books, trades, candles, funding, open interest and liquidations, the archive reconstructs order-level depth that the venues do not serve directly: L4 for the Hyperliquid families and L3 for Lighter. Access is unusually flat - every plan including Free reaches every route family, schema and served depth, and plans gate capacity and Free's rolling 30-day history window rather than route access. An agent can buy its own 30-day Build or Pro access with an x402 USDC payment on Base and receive an API key on settlement, with no human signup step.

## Kin Score — 73.6 / 100 (exemplar)

Scored 2026-09-02 under rubric 0.18.0. Trend: flat (+0.0 from 73.6).

| Facet | Score |
|---|---|
| Discoverability | 87.0 |
| Contract Quality | 54.5 |
| Governance | 18.2 |
| Contract Governance | 18.2 |
| Operational Transparency | 78.9 |
| Developer Ergonomics | 85.7 |
| Commercial Clarity | 76.3 |
| Access Clarity | 76.3 |

Regulatory layer — **Securities & Market Data**: 78.3 (matched via tags).

## Agent readiness — 52.6 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | documented |
| Rate Limit Signal | documented |
| Event Surface Described | yes |
| Agent Skills | yes |
| Well Known Catalog | yes |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | verified |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (3)

- **0xArchive REST API** — Current and historical market data across Hyperliquid core, Spot, HIP-3, HIP-4, and Lighter. Direct market-data requests use X-API-Key.
- **0xArchive WebSocket API** — Real-time subscriptions for supported Hyperliquid channels and historical replay for Hyperliquid and Lighter. Clients authenticate during the handshake with a bearer API key.
- **0xArchive Hosted MCP** — Read-only market-data discovery and retrieval for MCP clients. Hosted MCP uses client-managed OAuth and requires no 0xArchive API key.

## MCP servers (2)

- **0xArchive MCP Server** — Live MCP, gated: initialize returns 401 "Missing Authorization". Present and auth-required, not absent. Found via their own .well-known/mcp.json descriptor. Verified 2026-09-01.
- **0xArchive MCP** — Read-only market-data discovery and retrieval for MCP clients across Hyperliquid (core perps, HIP-3 builder perps, HIP-4 outcome markets, Spot) and Lighter.

## Security (3)

- **0Xarchive Authentication** — apiKey/oauth2/siwe · 4 schemes
- **0Xarchive Domain Security** — TLSv1.3 · HSTS · DMARC
- **0Xarchive Vulnerability Disclosure** — Hackerone · security.txt · contact published

## Plans (1)

- **0Xarchive Plans Pricing**

## Tags

market data, historical data, crypto, DeFi, perpetuals, derivatives, order book, Hyperliquid, Lighter, HIP-3, HIP-4, prediction markets, WebSocket, streaming, historical replay, Parquet, bulk data, MCP, agent-native, x402, OpenAPI, REST

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/0xarchive/). Scores are computed from the provider's own public artifacts under a published rubric.