MCP Task Constants (tasks/constants.ts)

Defines shared constants and status types for the Model Context Protocol (MCP) Tasks extension. Use this to maintain protocol compatibility when building task-based AI agent integrations.

// Source: https://github.com/mastra-ai/mastra | License: Apache-2.0 | Copyright 2025 Kepler Software, Inc
// Provided via justclaw.it.com; keep this notice with the code.
/**
 * Wire constants for the MCP Tasks extension (SEP-2663, protocol revision 2026-07-28).
 *
 * @experimental SEP-2663 extension; API may change.
 */

/** Extension identifier used as the key under `capabilities.extensions`. */
export const TASKS_EXTENSION_ID = 'io.modelcontextprotocol/tasks';

export const TASKS_METHODS = {
  get: 'tasks/get',
  update: 'tasks/update',
  cancel: 'tasks/cancel',
} as const;

/** `resultType` of a `tools/call` result that is a task handle instead of a `CallToolResult`. */
export const TASK_RESULT_TYPE = 'task';

export const TASK_STATUSES = ['working', 'input_required', 'completed', 'fa

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