> ## Documentation Index > Fetch the complete documentation index at: https://docs.blockline.sh/llms.txt > Use this file to discover all available pages before exploring further. # Discover Hot Accounts > Discover the hottest accounts with the most write lock contention across the entire Solana network. Returns ranked list with hot scores and heatmap data for the top 20 accounts. Very expensive queries - can take 2-5+ minutes. No caching. Requires either time_range OR slot parameter. ## OpenAPI ````yaml /api-reference/openapi.json post /api/write-locks/hot-accounts openapi: 3.0.3 info: title: Blockline MEV Analytics API description: >- Professional MEV analytics API for Solana. Analyze transaction context, detect front-running, identify sandwich attacks, and gain competitive intelligence on Solana MEV activity. version: 1.0.0 contact: name: Blockline Support url: https://blockline.soltop.sh servers: - url: https://api.soltop.sh description: Production API security: - ApiKeyAuth: [] tags: - name: Trade Analysis description: Analyze MEV activity and transaction context - name: Transactions description: Transaction details and metadata - name: Wallets description: Wallet transaction history - name: Data Management description: Backfill and data operations - name: MEV Analysis description: >- Sandwich attack detection: scan wallets, check transactions, and profile attackers (async job queue) - name: Write Locks description: Account write lock contention and hot account analysis paths: /api/write-locks/hot-accounts: post: tags: - Write Locks summary: Discover Hot Accounts description: >- Discover the hottest accounts with the most write lock contention across the entire Solana network. Returns ranked list with hot scores and heatmap data for the top 20 accounts. Very expensive queries - can take 2-5+ minutes. No caching. Requires either time_range OR slot parameter. operationId: discoverHotAccounts requestBody: required: true content: application/json: schema: type: object properties: time_range: type: string description: 'Query mode 1: Time range (mutually exclusive with slot)' enum: - 1h - 3h - 6h - 12h example: 6h slot: type: integer description: >- Query mode 2: Specific slot number (mutually exclusive with time_range) minimum: 1 example: 370537741 limit: type: integer description: Number of hot accounts to return default: 50 minimum: 1 maximum: 100 example: 50 responses: '200': description: Ranked list of hot accounts with heatmap data content: application/json: schema: type: object properties: success: type: boolean example: true data: type: object properties: query_mode: type: string enum: - time_range - slot example: time_range query_value: type: string example: 6h slot_range: type: object properties: min: type: integer example: 370500000 max: type: integer example: 370537741 limit: type: integer example: 50 hot_accounts: type: array description: Ranked by hot_score descending items: type: object properties: account_id: type: string example: FnmStvzQ27Pm4U8r3M6gPD7mnk6ST6HwraPsoNmYpump write_count: type: integer description: Total write operations example: 2340 conflict_count: type: integer description: Total conflict events example: 89 unique_signers: type: integer description: Number of unique wallets example: 45 hot_score: type: number description: Calculated hot score (0-10) example: 8.5 heatmap_data: type: array description: >- Time-bucketed access patterns for top 20 accounts (up to 1000 data points) items: type: object properties: slot: type: integer example: 370537741 account_id: type: string example: FnmStvzQ27Pm4U8r3M6gPD7mnk6ST6HwraPsoNmYpump access_count: type: integer description: Total access count example: 25 write_count: type: integer description: Write operations example: 18 read_count: type: integer description: Read operations example: 7 timestamp: type: string format: date-time example: '2025-10-01T19:22:33Z' timestamp: type: string format: date-time example: '2025-10-02T15:30:45.123Z' '400': description: Invalid request parameters content: application/json: schema: $ref: '#/components/schemas/Error' examples: missing_param: value: error: Missing required parameter details: Must provide either time_range or slot timestamp: '2025-10-02T15:30:45.123Z' conflicting_params: value: error: Invalid parameters details: Cannot provide both time_range and slot timestamp: '2025-10-02T15:30:45.123Z' '401': $ref: 02ca5649-c9d9-4a5e-8f26-a133d5c61cc5 '403': $ref: 80776eac-c595-4f19-9646-9d6dc9a6cf2c '429': $ref: cfbde83c-0b04-46b0-b46a-c3a713982079 security: - SupabaseJWT: [] components: schemas: Error: type: object properties: error: type: string description: Error message details: oneOf: - type: string - type: array items: type: string description: Detailed error information timestamp: type: string format: date-time description: When the error occurred securitySchemes: ApiKeyAuth: type: http scheme: bearer bearerFormat: API Key description: >- API Key authentication. Format: `sk_live_xxx` (production) or `sk_test_xxx` (testing). Obtain your API key from the [Blockline Dashboard](https://blockline.soltop.sh/dashboard/api-keys). SupabaseJWT: type: http scheme: bearer bearerFormat: JWT description: >- Supabase JWT authentication. Used for MEV Analysis and Write Locks endpoints. Requires an active subscription (trial, active, or grace_period status). ````