> ## Documentation Index > Fetch the complete documentation index at: https://docs.tinyfish.ai/llms.txt > Use this file to discover all available pages before exploring further. # Terminate a browser session > Terminates a remote browser session immediately. If the session is already ended this call is idempotent and still returns 204. ## OpenAPI ````yaml https://agent.tinyfish.ai/v1/openapi/browser delete /{sessionId} openapi: 3.0.0 info: title: TinyFish Browser API version: 1.0.0 description: Create remote browser sessions for direct Playwright/CDP control. contact: name: TinyFish Support email: support@tinyfish.ai servers: - url: https://api.browser.tinyfish.ai security: [] paths: /{sessionId}: delete: summary: Terminate a browser session description: >- Terminates a remote browser session immediately. If the session is already ended this call is idempotent and still returns 204. operationId: deleteBrowserSession parameters: - schema: type: string minLength: 1 description: Session ID to terminate. required: true description: Session ID to terminate. name: sessionId in: path responses: '204': description: Session terminated (or already ended). '400': description: Invalid session ID content: application/json: schema: type: object properties: error: type: object properties: code: type: string enum: - MISSING_API_KEY - INVALID_API_KEY - INVALID_INPUT - RATE_LIMIT_EXCEEDED - DAILY_LIMIT_EXCEEDED - INTERNAL_ERROR - RETRY_REQUIRED - UNAUTHORIZED - VAULT_RECONNECT_REQUIRED - FORBIDDEN - NOT_FOUND - FEATURE_NOT_AVAILABLE - SERVICE_BUSY - TIMEOUT - INSUFFICIENT_CREDITS - CONTENT_POLICY_VIOLATION - MAX_STEPS_EXCEEDED - SITE_BLOCKED - TASK_FAILED - CANCELLED description: Machine-readable error code example: INVALID_INPUT message: type: string description: Human-readable error message example: Field "url" is required and must be a string details: nullable: true description: Additional error details (validation errors, etc.) required: - code - message request_id: type: string description: >- Request correlation ID, also returned as the X-Request-ID response header. Include it when reporting issues. example: 8f9dba20-e37b-4749-a919-2269e28b4a2c required: - error description: Standard error response format '401': description: Unauthorized - Invalid or missing API key content: application/json: schema: type: object properties: error: type: object properties: code: type: string enum: - MISSING_API_KEY - INVALID_API_KEY - INVALID_INPUT - RATE_LIMIT_EXCEEDED - DAILY_LIMIT_EXCEEDED - INTERNAL_ERROR - RETRY_REQUIRED - UNAUTHORIZED - VAULT_RECONNECT_REQUIRED - FORBIDDEN - NOT_FOUND - FEATURE_NOT_AVAILABLE - SERVICE_BUSY - TIMEOUT - INSUFFICIENT_CREDITS - CONTENT_POLICY_VIOLATION - MAX_STEPS_EXCEEDED - SITE_BLOCKED - TASK_FAILED - CANCELLED description: Machine-readable error code example: INVALID_INPUT message: type: string description: Human-readable error message example: Field "url" is required and must be a string details: nullable: true description: Additional error details (validation errors, etc.) required: - code - message request_id: type: string description: >- Request correlation ID, also returned as the X-Request-ID response header. Include it when reporting issues. example: 8f9dba20-e37b-4749-a919-2269e28b4a2c required: - error description: Standard error response format '404': description: Session not found or does not belong to the authenticated user content: application/json: schema: type: object properties: error: type: object properties: code: type: string enum: - MISSING_API_KEY - INVALID_API_KEY - INVALID_INPUT - RATE_LIMIT_EXCEEDED - DAILY_LIMIT_EXCEEDED - INTERNAL_ERROR - RETRY_REQUIRED - UNAUTHORIZED - VAULT_RECONNECT_REQUIRED - FORBIDDEN - NOT_FOUND - FEATURE_NOT_AVAILABLE - SERVICE_BUSY - TIMEOUT - INSUFFICIENT_CREDITS - CONTENT_POLICY_VIOLATION - MAX_STEPS_EXCEEDED - SITE_BLOCKED - TASK_FAILED - CANCELLED description: Machine-readable error code example: INVALID_INPUT message: type: string description: Human-readable error message example: Field "url" is required and must be a string details: nullable: true description: Additional error details (validation errors, etc.) required: - code - message request_id: type: string description: >- Request correlation ID, also returned as the X-Request-ID response header. Include it when reporting issues. example: 8f9dba20-e37b-4749-a919-2269e28b4a2c required: - error description: Standard error response format '409': description: >- Conflicting operation on the session (RETRY_REQUIRED) — termination not confirmed, retry the delete shortly content: application/json: schema: type: object properties: error: type: object properties: code: type: string enum: - MISSING_API_KEY - INVALID_API_KEY - INVALID_INPUT - RATE_LIMIT_EXCEEDED - DAILY_LIMIT_EXCEEDED - INTERNAL_ERROR - RETRY_REQUIRED - UNAUTHORIZED - VAULT_RECONNECT_REQUIRED - FORBIDDEN - NOT_FOUND - FEATURE_NOT_AVAILABLE - SERVICE_BUSY - TIMEOUT - INSUFFICIENT_CREDITS - CONTENT_POLICY_VIOLATION - MAX_STEPS_EXCEEDED - SITE_BLOCKED - TASK_FAILED - CANCELLED description: Machine-readable error code example: INVALID_INPUT message: type: string description: Human-readable error message example: Field "url" is required and must be a string details: nullable: true description: Additional error details (validation errors, etc.) required: - code - message request_id: type: string description: >- Request correlation ID, also returned as the X-Request-ID response header. Include it when reporting issues. example: 8f9dba20-e37b-4749-a919-2269e28b4a2c required: - error description: Standard error response format '429': description: >- Rate limited by browser infrastructure (RATE_LIMIT_EXCEEDED) — honor Retry-After headers: Retry-After: description: Seconds to wait before retrying. schema: type: string content: application/json: schema: type: object properties: error: type: object properties: code: type: string enum: - MISSING_API_KEY - INVALID_API_KEY - INVALID_INPUT - RATE_LIMIT_EXCEEDED - DAILY_LIMIT_EXCEEDED - INTERNAL_ERROR - RETRY_REQUIRED - UNAUTHORIZED - VAULT_RECONNECT_REQUIRED - FORBIDDEN - NOT_FOUND - FEATURE_NOT_AVAILABLE - SERVICE_BUSY - TIMEOUT - INSUFFICIENT_CREDITS - CONTENT_POLICY_VIOLATION - MAX_STEPS_EXCEEDED - SITE_BLOCKED - TASK_FAILED - CANCELLED description: Machine-readable error code example: INVALID_INPUT message: type: string description: Human-readable error message example: Field "url" is required and must be a string details: nullable: true description: Additional error details (validation errors, etc.) required: - code - message request_id: type: string description: >- Request correlation ID, also returned as the X-Request-ID response header. Include it when reporting issues. example: 8f9dba20-e37b-4749-a919-2269e28b4a2c required: - error description: Standard error response format '500': description: >- Internal server error, including non-retryable upstream failures; the session may still be running — retry the delete content: application/json: schema: type: object properties: error: type: object properties: code: type: string enum: - MISSING_API_KEY - INVALID_API_KEY - INVALID_INPUT - RATE_LIMIT_EXCEEDED - DAILY_LIMIT_EXCEEDED - INTERNAL_ERROR - RETRY_REQUIRED - UNAUTHORIZED - VAULT_RECONNECT_REQUIRED - FORBIDDEN - NOT_FOUND - FEATURE_NOT_AVAILABLE - SERVICE_BUSY - TIMEOUT - INSUFFICIENT_CREDITS - CONTENT_POLICY_VIOLATION - MAX_STEPS_EXCEEDED - SITE_BLOCKED - TASK_FAILED - CANCELLED description: Machine-readable error code example: INVALID_INPUT message: type: string description: Human-readable error message example: Field "url" is required and must be a string details: nullable: true description: Additional error details (validation errors, etc.) required: - code - message request_id: type: string description: >- Request correlation ID, also returned as the X-Request-ID response header. Include it when reporting issues. example: 8f9dba20-e37b-4749-a919-2269e28b4a2c required: - error description: Standard error response format '503': description: >- Browser infrastructure temporarily unavailable (SERVICE_BUSY) — termination not confirmed, retry; honor Retry-After headers: Retry-After: description: Seconds to wait before retrying. schema: type: string content: application/json: schema: type: object properties: error: type: object properties: code: type: string enum: - MISSING_API_KEY - INVALID_API_KEY - INVALID_INPUT - RATE_LIMIT_EXCEEDED - DAILY_LIMIT_EXCEEDED - INTERNAL_ERROR - RETRY_REQUIRED - UNAUTHORIZED - VAULT_RECONNECT_REQUIRED - FORBIDDEN - NOT_FOUND - FEATURE_NOT_AVAILABLE - SERVICE_BUSY - TIMEOUT - INSUFFICIENT_CREDITS - CONTENT_POLICY_VIOLATION - MAX_STEPS_EXCEEDED - SITE_BLOCKED - TASK_FAILED - CANCELLED description: Machine-readable error code example: INVALID_INPUT message: type: string description: Human-readable error message example: Field "url" is required and must be a string details: nullable: true description: Additional error details (validation errors, etc.) required: - code - message request_id: type: string description: >- Request correlation ID, also returned as the X-Request-ID response header. Include it when reporting issues. example: 8f9dba20-e37b-4749-a919-2269e28b4a2c required: - error description: Standard error response format '504': description: >- Browser infrastructure timed out terminating the session (TIMEOUT) — retry content: application/json: schema: type: object properties: error: type: object properties: code: type: string enum: - MISSING_API_KEY - INVALID_API_KEY - INVALID_INPUT - RATE_LIMIT_EXCEEDED - DAILY_LIMIT_EXCEEDED - INTERNAL_ERROR - RETRY_REQUIRED - UNAUTHORIZED - VAULT_RECONNECT_REQUIRED - FORBIDDEN - NOT_FOUND - FEATURE_NOT_AVAILABLE - SERVICE_BUSY - TIMEOUT - INSUFFICIENT_CREDITS - CONTENT_POLICY_VIOLATION - MAX_STEPS_EXCEEDED - SITE_BLOCKED - TASK_FAILED - CANCELLED description: Machine-readable error code example: INVALID_INPUT message: type: string description: Human-readable error message example: Field "url" is required and must be a string details: nullable: true description: Additional error details (validation errors, etc.) required: - code - message request_id: type: string description: >- Request correlation ID, also returned as the X-Request-ID response header. Include it when reporting issues. example: 8f9dba20-e37b-4749-a919-2269e28b4a2c required: - error description: Standard error response format security: - ApiKeyAuth: [] components: securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-Key description: API key for authentication. Get your key from the API Keys page. ````