Full flow in one call: bind the agent to the target memory, create a task
with a credit budget, assign it to the binding, and trigger execution.
The agent works against the memory and reports back.

Args:
    agent_slug: Agent slug (or id) from the marketplace catalog.
    memory_id: Target memory the agent should work on (must be yours).
    title: Task title (max 200 chars).
    description: Task details.
    budget_credits: Credit budget held from your balance (default 50).
    api_key: Bearer token for authentication (required).

Returns:
    {"task": {...}, "status": str} with task id, assigned agent, and run
    status, or {"error": str}.