LiquidityAdded

Event v290 → current #2

Emitted when a user adds liquidity to a subnet 's pool.

View events on chain

Useful for: stakersdevelopersanalyticswallets

The Big Picture

Liquidity additions increase pool depth, enabling larger swaps with less slippage.

Use Cases

Track LP activity
Monitor TVL changes
Build liquidity analytics
Confirm LP transaction

From Chain Metadata

Event emitted when a liquidity position is added to a subnet's liquidity pool.

Part of: Concentrated Liquidity

Triggers

Emitted by

add_liquidity

Preconditions

V3 mode enabled
User had sufficient TAO/Alpha
Valid tick range

Effects

Storage Modified

CurrentLiquidity LastPositionId Positions TickIndexBitmapWords Ticks

Postconditions

Position created
User balances decreased
Pool liquidity increased

Side Effects

Updates tick boundaries
May affect current price

Event Data

#	Name	Type	Description
0	coldkey	AccountId	Cold wallet address (offline storage) (hex -> SS58)
1	hotkey	AccountId	Hot wallet address (active operations) (hex -> SS58)
2	netuid	u16	Subnet/network identifier (0-65535)
3	position_id	PositionId	position_id (PositionId)
4	liquidity	u64	liquidity (u64)
5	tao	u64	tao (u64)
6	alpha	u64	alpha (u64) (RAO -> TAO (/ 10^9))
7	tick_low	TickIndex	tick_low (TickIndex) (price = 1.0001^tick)
8	tick_high	TickIndex	tick_high (TickIndex) (price = 1.0001^tick)

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

On-Chain Activity

Emission Frequency

●●○○○○ Moderate 10K–100K emissions

Occasional use

#42 most emitted event

As of block 7,429,232

Runtime Info

View Source

Pallet Index: 28
Event Index: 2
First Version: v290
Current Version: v393

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