> ## Documentation Index > Fetch the complete documentation index at: https://docs.solanatracker.io/llms.txt > Use this file to discover all available pages before exploring further. # Slots updates subscribe ## AsyncAPI ````yaml solana-rpc/websocket/asyncapi.json slotsUpdatesSubscribe id: slotsUpdatesSubscribe title: Slots updates subscribe description: '' servers: - id: production protocol: wss host: rpc-mainnet.solanatracker.io bindings: [] variables: [] address: / parameters: [] bindings: [] operations: - &ref_4 id: subscribeToSlotsUpdates title: Subscribe to slots updates type: send messages: - &ref_7 id: slotsUpdatesSubscribe payload: - name: slotsUpdatesSubscribe description: Subscribe to slot updates type: object properties: - name: jsonrpc type: string description: '2.0' required: false - name: id type: integer required: false - name: method type: string description: slotsUpdatesSubscribe required: false headers: [] jsonPayloadSchema: &ref_0 type: object properties: jsonrpc: type: string const: '2.0' default: '2.0' x-parser-schema-id: id: type: integer default: 1 x-parser-schema-id: method: type: string const: slotsUpdatesSubscribe default: slotsUpdatesSubscribe x-parser-schema-id: examples: - jsonrpc: '2.0' id: 1 method: slotsUpdatesSubscribe x-parser-schema-id: title: Slots updates subscribe description: Subscribe to slot updates example: |- { "jsonrpc": "2.0", "id": 1, "method": "slotsUpdatesSubscribe" } bindings: [] extensions: - id: x-parser-unique-object-id value: slotsUpdatesSubscribe - id: x-parser-message-name value: slotsUpdatesSubscribe - &ref_8 id: slotsUpdatesNotification payload: - name: slotsUpdatesNotification description: Slot updates notification type: object properties: - name: jsonrpc type: string description: '2.0' required: false - name: method type: string description: slotsUpdatesNotification required: false - name: params type: object required: false properties: - name: result type: object required: false properties: - name: parent type: integer required: false - name: slot type: integer required: false - name: timestamp type: integer description: Unix timestamp (ms) required: false - name: type type: string enumValues: - firstShredReceived - completed - createdBank - frozen - dead - optimisticConfirmation - root required: false - name: subscription type: integer required: false headers: [] jsonPayloadSchema: &ref_1 type: object properties: jsonrpc: type: string const: '2.0' default: '2.0' x-parser-schema-id: method: type: string const: slotsUpdatesNotification default: slotsUpdatesNotification x-parser-schema-id: params: type: object properties: result: type: object properties: parent: type: integer x-parser-schema-id: slot: type: integer x-parser-schema-id: timestamp: type: integer description: Unix timestamp (ms) x-parser-schema-id: type: type: string enum: - firstShredReceived - completed - createdBank - frozen - dead - optimisticConfirmation - root x-parser-schema-id: x-parser-schema-id: subscription: type: integer x-parser-schema-id: x-parser-schema-id: examples: - jsonrpc: '2.0' method: slotsUpdatesNotification params: result: parent: 75 slot: 76 timestamp: 1625081266243 type: firstShredReceived subscription: 0 x-parser-schema-id: title: Slots updates notification description: Slot updates notification example: |- { "jsonrpc": "2.0", "method": "slotsUpdatesNotification", "params": { "result": { "parent": 75, "slot": 76, "timestamp": 1625081266243, "type": "firstShredReceived" }, "subscription": 0 } } bindings: [] extensions: - id: x-parser-unique-object-id value: slotsUpdatesNotification - id: x-parser-message-name value: slotsUpdatesNotification bindings: [] extensions: &ref_2 - id: x-parser-unique-object-id value: slotsUpdatesSubscribe - &ref_3 id: receiveSlotsUpdatesNotifications title: Receive slots updates notifications type: receive messages: - &ref_5 id: slotsUpdatesSubscribe payload: - name: slotsUpdatesSubscribe description: Subscribe to slot updates type: object properties: - name: jsonrpc type: string description: '2.0' required: false - name: id type: integer required: false - name: method type: string description: slotsUpdatesSubscribe required: false headers: [] jsonPayloadSchema: *ref_0 title: Slots updates subscribe description: Subscribe to slot updates example: |- { "jsonrpc": "2.0", "id": 1, "method": "slotsUpdatesSubscribe" } bindings: [] extensions: - id: x-parser-unique-object-id value: slotsUpdatesSubscribe - id: x-parser-message-name value: slotsUpdatesSubscribe - &ref_6 id: slotsUpdatesNotification payload: - name: slotsUpdatesNotification description: Slot updates notification type: object properties: - name: jsonrpc type: string description: '2.0' required: false - name: method type: string description: slotsUpdatesNotification required: false - name: params type: object required: false properties: - name: result type: object required: false properties: - name: parent type: integer required: false - name: slot type: integer required: false - name: timestamp type: integer description: Unix timestamp (ms) required: false - name: type type: string enumValues: - firstShredReceived - completed - createdBank - frozen - dead - optimisticConfirmation - root required: false - name: subscription type: integer required: false headers: [] jsonPayloadSchema: *ref_1 title: Slots updates notification description: Slot updates notification example: |- { "jsonrpc": "2.0", "method": "slotsUpdatesNotification", "params": { "result": { "parent": 75, "slot": 76, "timestamp": 1625081266243, "type": "firstShredReceived" }, "subscription": 0 } } bindings: [] extensions: - id: x-parser-unique-object-id value: slotsUpdatesNotification - id: x-parser-message-name value: slotsUpdatesNotification bindings: [] extensions: *ref_2 sendOperations: - *ref_3 receiveOperations: - *ref_4 sendMessages: - *ref_5 - *ref_6 receiveMessages: - *ref_7 - *ref_8 extensions: - id: x-parser-unique-object-id value: slotsUpdatesSubscribe securitySchemes: - id: apiKeyAuth name: api_key type: httpApiKey description: >- API key for authentication. Provide your Solana Tracker API key as a query parameter. in: query extensions: [] ````