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Implementing A2A Protocol for Service Agents

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Linked challenge: Proactive iOS Digital Assistant

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Linked challenge
Proactive iOS Digital Assistant

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Design and implement a simplified A2A Protocol for two specialized agents (e.g., 'Calendar Agent' and 'Messaging Agent') to communicate. This protocol should define message formats (JSON), endpoints, and authentication (simulated). Show how the 'Proactive Assistant Agent' would send a request to the 'Calendar Agent' to schedule an event using this A2A Protocol, and how the 'Calendar Agent' would respond.

Adaptation plan

Keep the source stable, then change the prompt in a predictable order so the next run is easier to evaluate.

Keep stable

Hold the task contract and output shape stable so generated implementations remain comparable.

Tune next

Update libraries, interfaces, and environment assumptions to match the stack you actually run.

Verify after

Test failure handling, edge cases, and any code paths that depend on hidden context or secrets.