Function createA2AClientFromCardUrl

createA2AClientFromCardUrl(
    cardUrl: string,
    fetchImpl: {
        (input: URL | RequestInfo, init?: RequestInit): Promise<Response>;
        (input: string | URL | Request, init?: RequestInit): Promise<Response>;
    },
    legacyCompat?: A2ALegacyCompatOptions,
): Promise<Client>
Create an official A2A client from an agent-card URL.

v0.3 compatibility remains enabled by default. Pass { enabled: false } as the third argument to require native A2A 1.0 card resolution and JSON-RPC transport behavior.
Parameters
- cardUrl: string
- fetchImpl: {
  (input: URL | RequestInfo, init?: RequestInit): Promise<Response>;
  (input: string | URL | Request, init?: RequestInit): Promise<Response>;
  }
  - (input: URL | RequestInfo, init?: RequestInit): Promise<Response>
    
    MDN Reference
    
    Parameters
    
    input: URL | RequestInfo
    
    Optionalinit: RequestInit
    
    Returns Promise<Response>
    
    (input: string | URL | Request, init?: RequestInit): Promise<Response>
    
    MDN Reference
    
    Parameters
    
    input: string | URL | Request
    
    Optionalinit: RequestInit
    
    Returns Promise<Response>
- legacyCompat: A2ALegacyCompatOptions = DEFAULT_A2A_LEGACY_COMPAT
Returns Promise<Client>
- Defined in src/lib/protocols/a2a.ts:387