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Get a key, make a request, then open the API or tool that fits the job.

Start
Quick Start
Coverage
Hyperliquid, Lighter.xyz, HIP-3
Also here
Replay, SDKs, CLI, AI clients
Open Quick Start
Create account

Start with the job at hand

Quick Start gets you live. The rest of the docs split by interface and decision type.

First request
Start hereCreate a key and make the first authenticated request.
REST reference
ReferenceHyperliquid, Lighter.xyz, and HIP-3 routes with credits, parameters, and example requests.
WebSocket live/replay
Live + replayLive subscriptions, replay, and gap events on one socket.
SDKs
Typed clientsOfficial clients for Python, TypeScript, and Rust.
Playground
Browser checkRun a request in the browser and inspect the response.
Guides
Decision supportDecide venue fit, cost, and data continuity.
AI Clients
AutomationClaude Code skill plus MCP setup for Claude Desktop and Cursor.
CLI
ShellShell access with JSON output and stable exit codes.
Wallet Automation
SIWE + x402SIWE signup, wallet-managed keys, and x402 billing.

What lives here

Market data, transport, tooling, and monitoring.

Venue

Hyperliquid

Core perp coverage with long history, order flow, liquidations, and monitoring.

Venue

Lighter.xyz

L2/L3 depth plus reconstruction-heavy historical data.

Market family

HIP-3

Builder perps inside the Hyperliquid namespace, documented alongside the core API.

Transport

Historical replay

The socket handles both live traffic and historical replay.

Monitoring

Data quality

Freshness, incidents, coverage, latency, and health routes live in the reference.

Common entry points

These routes match common search paths while keeping the canonical docs model intact.

Free crypto data API
Free planStart on the free plan, confirm live coverage, then upgrade when replay or export volume expands.
Crypto historical data API
Historical dataCompare the historical REST paths for replay, research, and backtesting workloads.
HyperliquidHyperliquid historical data
HyperliquidUse the Hyperliquid-specific guide for long-window perp history and order-book use cases.
Hyperliquid HIP-3 data
HIP-3Route HIP-3 builder markets through the Hyperliquid-scoped REST and coverage model.
Lighter.xyzLighter API quickstart
Lighter.xyzStart with Lighter symbols and the L2/L3 data paths that differ from Hyperliquid.
Native vs managed data
Decision guideDecide when direct venue ingestion is enough and when a managed archive is safer.

Use with Claude, ChatGPT, or your own tools

Reach for markdown pages, llms.txt, and OpenAPI when you want clean docs files without the full app shell.

Markdown pages

Read the docs without the app shell, copy a clean page, or hand the exact page to Claude, ChatGPT, and your own tools.

Docs Home (.md)AI Clients (.md)Pricing (.md)

API contract

Use the public spec when you need exact routes, parameters, schemas, and plan-gate notes.

openapi.jsonREST API docsResponse Schemas

llms.txt

Start with the high-level product map, then jump into the setup or route page that matches the job.

llms.txtAI ClientsWallet Automation

Two strong starting points

Create accountCreate the account and mint the first API key.Open PlaygroundUse the browser for a quick live response check.