.NET: Dynamically generated agents - not possible?

[toresenneseth]

Hi,

All the examples I've seen so far assumes that you know which agents are available at startup.
Unfortunately, I don't have that luxury :)

In my company, we need to dynamically generate agents based on user configuration. They should be exposed under a resource such as https://domain.com/a2a/tenants/{tenantId}/agents/{agentId} (to be clear, this is a route pattern, so tenantId and agentId are only known at runtime).

When the agent resource is requested, I imagine I need to

• For agent card resolution, resolve the tenantId and agentId from the request somehow, fetch configuration from my database and generate the agent card
• For execution, resolve the tenantId and agentId from the request, then run my AI agent with the parameters passed in from the Client Agent.

This does not seem possible at the moment, without copying a lot of internal code from the A2A and agent-framework library.

All the all.MapA2A(...) APIs expects an agent or a TaskManager, and I don't have sufficient information to do anything until I have the route parameters that tells which agent to run.

I've tried to use the TaskManager, which makes it possible to resolve the AgentCard in OnAgentCardQuery, but OnMessageReceived does not provide any way to get the same type of information.

return new TaskManager
{
    OnAgentCardQuery = async (request, cancellationToken) =>
    {
        var urlInfo = A2AUrlParser.Parse(request);
        var agentCardInfo = await _myDb.GetA2AAgentDefinitionAsync(urlInfo.TenantId, urlInfo.AgentId);
        var agentCard = AgentCardUtils.Deserialize(agentCardInfo);
        if (agentCard is null)
        {
            throw new InvalidOperationException($"A2A Agent not found");
        }

        return agentCard;
    },
    OnMessageReceived = async (request, cancellationToken) =>
    {                   
        // I don't have info to figure out what to run. request does not contain resource identifiers
    }
};

Am I going about this wrong? How can I dynamically execute agents that are not known at startup?

-Thanks