UserLiquidityToggled

Event v290 → current #1

Emitted when user liquidity is enabled or disabled for a subnet .

View events on chain

Useful for: subnet ownersstakersdevelopersanalytics

The Big Picture

Signals that a subnet has transitioned to V3 concentrated liquidity mode.

Use Cases

Detect when LP is available
Track V2->V3 upgrade events
Monitor LP availability

From Chain Metadata

Event emitted when user liquidity operations are enabled for a subnet. First enable even indicates a switch from V2 to V3 swap.

Part of: Concentrated Liquidity

Triggers

Emitted by

toggle_user_liquidity disable_lp

Preconditions

Admin/sudo or subnet owner call succeeded
Subnet has subtoken enabled

Effects

Storage Modified

EnabledUserLiquidity

Postconditions

EnabledUserLiquidity updated
V3 mode activated if first enable

Side Effects

Permanent V3 mode if first enable

Event Data

#	Name	Type	Description
0	netuid	u16	Subnet/network identifier (0-65535)
1	enable	bool	enable (bool)

Code Examples

import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";

const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });

// Subscribe to UserLiquidityToggled events
api.query.system.events((events) => {
  events
    .filter(({ event }) =>
      event.section === stringCamelCase("Swap") &&
      event.method === "UserLiquidityToggled"
    )
    .forEach(({ event }) => {
      console.log("UserLiquidityToggled:", event.data.toHuman());
    });
});

Runtime Info

View Source

Pallet Index: 28
Event Index: 1
First Version: v290
Current Version: v393

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