Build a markets dashboard - Archer Exchange

Two global channels, no key required.

{ "op": "subscribe", "channels": ["mini_tickers", "market_updates"] }

(Ignore the market echoed back in the subscribed confirmation for these)

Step 2 - render tickers

mini_tickers arrives ~every 1.5s as a single map of market → { lastPrice, priceChangePercent24h, volume24h }. Replace your view wholesale each frame.

Step 3 - react to listings/status

market_updates frames:

type: "listed" — data is the full market object (same shape as GET /v1/markets/{address}). Add the row.
type: "status_changed" — data = { address, status, reason } where status ∈ {"active","paused","closed"}. Update the row’s badge.
type: "delisted" — data = { address }. Remove the row.

A market close emits two frames: a status_changed with status:"closed" and a delisted. Listen to delisted if you only want the terminal “market is gone” signal; status_changed if you track the full active ↔ paused ↔ closed lifecycle. delisted fires only on the close transition.