hyperliquid-reader — Claude Code skill: what it does, install

---
name: hyperliquid-reader
description: >
  Read Hyperliquid (app.hyperliquid.xyz) perp and spot market data through opencli and
  Hyperliquid's public info API: mark, oracle, and mid prices, 24h change, funding
  rates (hourly and annualized APR), open interest, volume, the L2 order book, OHLCV
  candles, funding history, and cross-venue funding comparisons (Hyperliquid vs
  Binance vs Bybit) for funding arbitrage. Use this skill whenever the user mentions
  Hyperliquid (HL, HL DEX, hyperliquid.xyz) or asks about its perps, spot pairs such
  as PURR, funding, open interest, order book, or candles. Read-only market data: no
  account, order, or transfer operations.
---

# Hyperliquid Reader (Read-Only)

If your host has not already executed the shell probes below (for example, in Codex), run the commands inside the `!` wrappers with its shell tool before choosing a setup path. Use the actual output; if shell access is unavailable, report that limitation.

Reads [Hyperliquid](https://app.hyperliquid.xyz) — the on-chain perps/spot DEX — for market data via [opencli](https://github.com/jackwener/opencli) and the `hyperliquid` plugin in this repo's [`opencli-plugins/hyperliquid`](https://github.com/himself65/finance-skills/tree/main/opencli-plugins/hyperliquid) tree (a separate plugin from opencli's built-in adapters, installed via opencli's monorepo subpath syntax).

**This skill is read-only and market-data only.** It reads Hyperliquid's fully public info API for analysis: market tables, funding, order book, and candles. It does NOT read individual accounts, place/modify/cancel orders, or move funds. There is no trading path in the plugin — order placement requires wallet-signed actions on a separate endpoint this adapter never calls.

**How it works**: every command issues a single `POST https://api.hyperliquid.xyz/info` with a `{ "type": "..." }` body and normalizes the response. **No API key, no wallet, no login, no running app** — the info API is public.

---

## Step 1: Ensure opencli + Plugin Are Installed and Ready

**Current environment status:**

```
!`(command -v opencli && opencli hyperliquid markets --coin BTC -f json 2>&1 | head -3 && echo "READY" || echo "SETUP_NEEDED") 2>/dev/null || echo "NOT_INSTALLED"`
```

If the status above shows `READY`, skip to Step 2. Otherwise:

### NOT_INSTALLED — Install opencli

```bash
npm install -g @jackwener/opencli
```

Requires Node.js >= 24 — the `hyperliquid` plugin declares `engines.node >= 24`.

### SETUP_NEEDED — Install the Hyperliquid plugin

The Hyperliquid adapter is **not** built into opencli — it's a separate plugin:

```bash
opencli plugin install github:himself65/finance-skills/hyperliquid
```

That's the entire setup — no auth, no launch step. Verify with `opencli hyperliquid markets --coin BTC`.

### Common setup issues

| Symptom | Fix |
|---|---|
| `opencli: command not found` | `npm install -g @jackwener/opencli` (Node ≥ 24) |
| `Unknown command: hyperliquid` | `opencli plugin install github:himself65/finance-skills/hyperliquid` |
| `hyperliquid info 429` | Rate limited — wait a few seconds and retry |

---

## Step 2: Identify What the User Needs

| User Request | Command | Key Flags |
|---|---|---|
| Perp markets overview / top by volume | `opencli hyperliquid markets` | `--sort`, `--limit`, `--coin` |
| One perp's price + funding + OI | `opencli hyperliquid markets --coin BTC` | — |
| Spot pairs overview | `opencli hyperliquid spot-markets` | `--sort`, `--limit`, `--pair`, `--canonical-only` |
| All current mid prices | `opencli hyperliquid mids` | `--coin <substring>` |
| Order book for a coin | `opencli hyperliquid book --coin ETH` | `--depth`, `--n-sig-figs` |
| OHLCV candles | `opencli hyperliquid candles --coin BTC --interval 1h` | `--limit` |
| Historical funding for a coin | `opencli hyperliquid funding-history --coin BTC` | `--hours`, `--limit` |
| Funding arb: HL vs Binance vs Bybit | `opencli hyperliquid funding-compare` | `--coin`, `--sort`, `--limit` |

---

## Step 3: Execute the Command

### General pattern

```bash
# Use -f json or -f yaml for structured output
opencli hyperliquid markets --sort fundingAprPct --limit 15 -f json
opencli hyperliquid funding-compare --sort hlVsBinancePct --limit 20 -f md
opencli hyperliquid candles --coin BTC --interval 4h --limit 50 -f csv
opencli hyperliquid book --coin ETH --depth 5 -f json
```

### Key rules

1. **Coin symbols are bare perp names** — `BTC`, `ETH`, `SOL`, `HYPE` (no exchange prefix). Spot pairs are `BASE/USDC` (e.g. `PURR/USDC`); for `book`/`candles` you can pass either a perp coin or a spot pair.
2. **`markets` is the default lens for "how is X / the market doing"** — it carries mark/oracle/mid price, 24h change, hourly funding + APR, open interest (coins and notional), and 24h volume in one row per perp. Filter with `--coin` for a single asset.
3. **Funding is reported two ways** — `fundingHrPct` is the raw hourly rate as a percent; `fundingAprPct` annualizes it (`hourly × 24 × 365`). Lead with APR when comparing carry across assets; use the hourly figure for "what will I pay next hour".
4. **`funding-compare` is the funding-arb screen** — it annualizes each venue with its own interval (HL hourly, Binance/Bybit usually 4h) and reports `hlVsBinancePct` / `hlVsBybitPct` spreads. Default sort ranks by **absolute** HL-vs-Binance spread (widest dislocations first). A positive `hlVsBinancePct` means HL longs pay more than Binance longs.
5. **`book` defaults to 10 levels per side** — raise `--depth` (max 20) for more, or `--n-sig-figs 2..5` to aggregate price levels. Compute the spread/mid from the top bid and ask.
6. **`candles` pulls the most recent `--limit` candles** of `--interval` (default `1h`, 100 candles). Valid intervals: `1m 3m 5m 15m 30m 1h 2h 4h 8h 12h 1d 3d 1w 1M`. Max 5000.
7. **`-f json`** for programmatic processing / feeding other skills; `-f md` or `-f table` for human-readable output.
8. **Read-only market data.** No account reads, no order placement, modification, or cancellation, and no transfers — the plugin intentionally exposes no write endpoints, so don't look for workarounds.

### Output format flag (`-f`)

| Format | Flag | Best for |
|---|---|---|
| Table | `-f table` (default) | Human-readable terminal output |
| JSON | `-f json` | Programmatic processing, LLM context |
| YAML | `-f yaml` | Structured, readable |
| Markdown | `-f md` | Reports |
| CSV | `-f csv` | Spreadsheet export |

### Output columns

- `markets` — `coin`, `markPx`, `midPx`, `oraclePx`, `change24hPct`, `fundingHrPct`, `fundingAprPct`, `openInterest`, `oiNotional`, `dayNtlVlm`, `premiumPct`, `maxLeverage`
- `spot-markets` — `pair`, `base`, `markPx`, `midPx`, `change24hPct`, `dayNtlVlm`, `circulatingSupply`, `marketCap`, `canonical`
- `mids` — `coin`, `mid`
- `book` — `side`, `level`, `px`, `sz`, `orders`
- `candles` — `time`, `open`, `high`, `low`, `close`, `volume`, `trades`
- `funding-history` — `coin`, `fundingRatePct`, `fundingAprPct`, `premiumPct`, `time`
- `funding-compare` — `coin`, `hlAprPct`, `binanceAprPct`, `bybitAprPct`, `hlVsBinancePct`, `hlVsBybitPct`, `nextHlFunding`

---

## Step 4: Present the Results

1. **Lead with the headline number, then the table.** For `markets --coin BTC`: state mark price, 24h change, funding APR, and open interest in prose first. For a full `markets` dump: lead with the count and the top movers / highest-funding names.
2. **Frame funding in carry terms** — e.g. "BTC perp funding is +10.9% APR (longs pay shorts)". Positive funding ⇒ longs pay shorts; negative ⇒ shorts pay longs.
3. **For `funding-compare`, surface the widest dislocations first** — name the coin, both venues' APRs, and the spread, and remember the spread is annualized; a real arb also pays exchange/withdrawal frictions, so present it as a screen, not a guaranteed edge.
4. **For `book`, report the spread** — best bid, best ask, mid, and spread in bps before (or instead of) dumping every level. Don't paste 20 levels unless asked.
5. **For `candles`, describe the move** — first/last close, high/low, and direction; only show the full OHLCV table when the user wants the series.
6. **Filter aggressively before showing** — `markets` has ~180 perps and `mids` ~700 markets; cap to top 15-20 by the relevant sort unless the user asks for the full list.
7. **Cross-reference for trade decisions** — Hyperliquid is the on-chain venue; for equities/options context pair it with the `tradingview-reader` skill. For funding/basis trades, `funding-compare` plus `markets` (premium, OI) is the core view.

---

## Step 5: Diagnostics

```bash
opencli hyperliquid markets --coin BTC
```

A successful BTC row confirms opencli, the plugin, and the public API are all reachable. If it errors with `Unknown command: hyperliquid`, reinstall the plugin (Step 1). A `hyperliquid info 4xx/5xx` is an upstream API issue — retry after a short wait.

---

## Error Reference

| Error | Cause | Fix |
|---|---|---|
| `Unknown command: hyperliquid` | Plugin not installed | `opencli plugin install github:himself65/finance-skills/hyperliquid` |
| `hyperliquid info 429` | Rate limited | Wait a few seconds, then retry |
| `hyperliquid info 422/500` | Malformed body or upstream issue | Re-check the coin/interval; retry after a wait |
| `No perp market for coin "X"` | Wrong/unlisted symbol | Run `opencli hyperliquid markets` (or `mids`) to find the exact symbol |

---

## Reference Files

- `references/commands.md` — Every command with all flags, output schemas, and analyst workflows (funding carry, basis/arb, spot snapshot)