> ## Documentation Index > Fetch the complete documentation index at: https://docs.predexon.com/llms.txt > Use this file to discover all available pages before exploring further. # Collateral Playground > pUSD wrap/unwrap events (V2). Tracks deposits and withdrawals of the V2 trading collateral. ## AsyncAPI ````yaml websocket/asyncapi.json collateral id: collateral title: Collateral description: >- pUSD wrap/unwrap events (V2). Tracks deposits and withdrawals of the V2 trading collateral. servers: - id: production protocol: wss host: wss.predexon.com bindings: [] variables: [] address: / parameters: [] bindings: [] operations: - &ref_1 id: sendSubscribeCollateral title: Send subscribe collateral type: receive messages: - &ref_6 id: SubscribeCollateral payload: - name: Subscribe to Collateral description: >- Subscribe to pUSD wrap/unwrap events (V2 deposits and withdrawals). Only users filter or wildcard supported. type: object properties: - name: action type: string description: Must be 'subscribe' required: true - name: platform type: string description: Must be 'polymarket' required: true - name: version type: integer description: Must be 1 required: true - name: type type: string description: Must be 'collateral' required: true - name: filters type: object description: Only 'users' filter supported. Use ["*"] for wildcard. required: true properties: - name: users type: array description: Wallet addresses or ["*"] required: false properties: - name: item type: string required: false headers: [] jsonPayloadSchema: type: object required: - action - platform - version - type - filters properties: action: type: string description: Must be 'subscribe' x-parser-schema-id: platform: type: string description: Must be 'polymarket' x-parser-schema-id: version: type: integer description: Must be 1 x-parser-schema-id: type: type: string description: Must be 'collateral' x-parser-schema-id: filters: type: object description: Only 'users' filter supported. Use ["*"] for wildcard. properties: users: type: array description: Wallet addresses or ["*"] items: type: string x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: examples: - action: subscribe platform: polymarket version: 1 type: collateral filters: users: - 0x3b27d0fb... x-parser-schema-id: title: Subscribe to Collateral description: >- Subscribe to pUSD wrap/unwrap events (V2 deposits and withdrawals). Only users filter or wildcard supported. example: |- { "action": "subscribe", "platform": "polymarket", "version": 1, "type": "collateral", "filters": { "users": [ "0x3b27d0fb..." ] } } bindings: [] extensions: - id: x-parser-unique-object-id value: SubscribeCollateral - id: x-parser-message-name value: SubscribeCollateral bindings: [] extensions: &ref_0 - id: x-mint value: &ref_11 content: >- WebSocket requires a **Dev** or **Pro** API key. Free tier keys cannot connect. [Get your key →](https://dashboard.predexon.com) - id: x-parser-unique-object-id value: collateral - &ref_2 id: sendUnsubscribeCollateral title: Send unsubscribe collateral type: receive messages: - &ref_7 id: Unsubscribe payload: - name: Unsubscribe description: Remove a subscription by ID. type: object properties: - name: action type: string description: Must be 'unsubscribe' required: true - name: subscription_id type: string description: Subscription ID from the ack response (e.g. sub_2f4b15b33798) required: true headers: [] jsonPayloadSchema: type: object required: - action - subscription_id properties: action: type: string description: Must be 'unsubscribe' x-parser-schema-id: subscription_id: type: string description: Subscription ID from the ack response (e.g. sub_2f4b15b33798) x-parser-schema-id: examples: - action: unsubscribe subscription_id: sub_2f4b15b33798 x-parser-schema-id: title: Unsubscribe description: Remove a subscription by ID. example: |- { "action": "unsubscribe", "subscription_id": "sub_2f4b15b33798" } bindings: [] extensions: - id: x-parser-unique-object-id value: Unsubscribe - id: x-parser-message-name value: Unsubscribe bindings: [] extensions: *ref_0 - &ref_3 id: sendUpdateCollateral title: Send update collateral type: receive messages: - &ref_8 id: Update payload: - name: Update Subscription description: >- Replace filters on an existing subscription. Not supported on the orderbook channel. type: object properties: - name: action type: string description: Must be 'update' required: true - name: subscription_id type: string description: Subscription ID to update required: true - name: filters type: object description: New filters (replaces existing filters entirely) required: true properties: - name: users type: array description: Wallet addresses required: false properties: - name: item type: string required: false - name: condition_ids type: array description: Market condition IDs required: false properties: - name: item type: string required: false - name: market_slugs type: array description: Market URL slugs required: false properties: - name: item type: string required: false - name: status type: string description: confirmed, pending, or all (orders channel only) enumValues: - confirmed - pending - all required: false - name: token_ids type: array description: CLOB token IDs (orderbook channel only) required: false properties: - name: item type: string required: false - name: feeds type: array description: Chainlink crypto feed symbols (crypto_prices channel only) required: false properties: - name: item type: string required: false headers: [] jsonPayloadSchema: type: object required: - action - subscription_id - filters properties: action: type: string description: Must be 'update' x-parser-schema-id: subscription_id: type: string description: Subscription ID to update x-parser-schema-id: filters: type: object description: New filters (replaces existing filters entirely) properties: users: type: array description: Wallet addresses items: type: string x-parser-schema-id: x-parser-schema-id: condition_ids: type: array description: Market condition IDs items: type: string x-parser-schema-id: x-parser-schema-id: market_slugs: type: array description: Market URL slugs items: type: string x-parser-schema-id: x-parser-schema-id: status: type: string description: confirmed, pending, or all (orders channel only) enum: - confirmed - pending - all x-parser-schema-id: token_ids: type: array description: CLOB token IDs (orderbook channel only) items: type: string x-parser-schema-id: x-parser-schema-id: feeds: type: array description: Chainlink crypto feed symbols (crypto_prices channel only) items: type: string x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: examples: - action: update subscription_id: sub_2f4b15b33798 filters: users: - 0xnew_address... status: all x-parser-schema-id: title: Update Subscription description: >- Replace filters on an existing subscription. Not supported on the orderbook channel. example: |- { "action": "update", "subscription_id": "sub_2f4b15b33798", "filters": { "users": [ "0xnew_address..." ], "status": "all" } } bindings: [] extensions: - id: x-parser-unique-object-id value: Update - id: x-parser-message-name value: Update bindings: [] extensions: *ref_0 - &ref_4 id: receiveAckCollateral title: Receive ack collateral type: send messages: - &ref_9 id: Ack payload: - name: Acknowledgement description: >- Server acknowledgement for subscribe, unsubscribe, and update actions. type: object properties: - name: type type: string description: ack required: true - name: subscription_id type: string description: The subscription ID required: true - name: channel type: string description: >- Channel name (trades, activity, lifecycle, orderbook, oracle, collateral, crypto_prices) required: true headers: [] jsonPayloadSchema: type: object properties: type: type: string description: ack x-parser-schema-id: subscription_id: type: string description: The subscription ID x-parser-schema-id: channel: type: string description: >- Channel name (trades, activity, lifecycle, orderbook, oracle, collateral, crypto_prices) x-parser-schema-id: required: - type - subscription_id - channel examples: - type: ack subscription_id: sub_2f4b15b33798 channel: trades x-parser-schema-id: title: Acknowledgement description: Server acknowledgement for subscribe, unsubscribe, and update actions. example: |- { "type": "ack", "subscription_id": "sub_2f4b15b33798", "channel": "trades" } bindings: [] extensions: - id: x-parser-unique-object-id value: Ack - id: x-parser-message-name value: Ack bindings: [] extensions: *ref_0 - &ref_5 id: receiveCollateralEvent title: Receive collateral event type: send messages: - &ref_10 id: CollateralEvent payload: - name: Collateral Event description: pUSD wrap (deposit) or unwrap (withdrawal) event. V2 only. type: object properties: - name: event_type type: string description: polyusd_wrapped (deposit) or polyusd_unwrapped (withdrawal) enumValues: - polyusd_wrapped - polyusd_unwrapped required: true - name: user type: string description: End-recipient of the operation required: true - name: asset type: string description: Underlying ERC-20 address (typically USDC.e) required: true - name: amount type: integer description: Raw amount (6 decimals, same as USDC) required: true - name: amount_normalized type: number description: Human-readable amount required: true - name: tx_hash type: string description: Transaction hash required: true - name: log_index type: string description: Log index (hex) required: true - name: block_number type: string description: Block number (hex) required: true - name: timestamp type: integer description: Unix timestamp in seconds required: true - name: version type: integer description: Always 2 enumValues: - 2 required: true headers: [] jsonPayloadSchema: type: object properties: event_type: type: string description: polyusd_wrapped (deposit) or polyusd_unwrapped (withdrawal) enum: - polyusd_wrapped - polyusd_unwrapped x-parser-schema-id: user: type: string description: End-recipient of the operation x-parser-schema-id: asset: type: string description: Underlying ERC-20 address (typically USDC.e) x-parser-schema-id: amount: type: integer description: Raw amount (6 decimals, same as USDC) x-parser-schema-id: amount_normalized: type: number description: Human-readable amount x-parser-schema-id: tx_hash: type: string description: Transaction hash x-parser-schema-id: log_index: type: string description: Log index (hex) x-parser-schema-id: block_number: type: string description: Block number (hex) x-parser-schema-id: timestamp: type: integer description: Unix timestamp in seconds x-parser-schema-id: version: type: integer description: Always 2 enum: - 2 x-parser-schema-id: required: - event_type - user - asset - amount - amount_normalized - tx_hash - log_index - block_number - timestamp - version examples: - event_type: polyusd_wrapped user: 0x3b27d0fb... asset: '0x2791bca1f2de4661ed88a30c99a7a9449aa84174' amount: 45000000 amount_normalized: 45 tx_hash: 0xabc... log_index: '0x9ed' block_number: '0x51c9418' timestamp: 1776638042 version: 2 x-parser-schema-id: title: Collateral Event description: pUSD wrap (deposit) or unwrap (withdrawal) event. V2 only. example: |- { "event_type": "polyusd_wrapped", "user": "0x3b27d0fb...", "asset": "0x2791bca1f2de4661ed88a30c99a7a9449aa84174", "amount": 45000000, "amount_normalized": 45, "tx_hash": "0xabc...", "log_index": "0x9ed", "block_number": "0x51c9418", "timestamp": 1776638042, "version": 2 } bindings: [] extensions: - id: x-parser-unique-object-id value: CollateralEvent - id: x-parser-message-name value: CollateralEvent bindings: [] extensions: *ref_0 sendOperations: - *ref_1 - *ref_2 - *ref_3 receiveOperations: - *ref_4 - *ref_5 sendMessages: - *ref_6 - *ref_7 - *ref_8 receiveMessages: - *ref_9 - *ref_10 extensions: - id: x-mint value: *ref_11 - id: x-parser-unique-object-id value: collateral securitySchemes: - id: apiKey name: api_key type: httpApiKey description: Your Predexon API key in: query extensions: [] ````