A2A Message Sender for Multi-Agent Workflow Testing

Send agent-to-agent messages to test orchestration flows, routing logic, and handoffs before you run a full production scenario.

Quick orientation

When to use this tool

Use the A2A sender when you want to test one handoff in a multi-agent system without replaying the whole chain every time.

1
When checking routing rules between specialized agents
2
When debugging a handoff that breaks only after one specific message shape
3
When validating message structure before an end-to-end orchestration test

Gateway URL

Auth Token

Channel ID

Target (user/channel)

Message

Response

Response will appear here

Why isolate the handoff

Multi-agent bugs can hide inside one tiny message assumption. Isolating the send step helps you confirm whether the receiving agent is getting the payload you think it is.

Handoff quality

What to verify before you trust a multi-agent hop

A successful send is only the first step. The receiving agent still needs enough structure to do the right thing next.

Make sure the receiving agent expects the same fields you are sending, not just the same general idea.

Test channel-based routing and direct-target routing separately so one does not hide bugs in the other.

If a message disappears silently, inspect auth and gateway-level permissions before touching the agent logic.

Keep one known-good payload around. It is the fastest way to tell whether the problem is your message or the environment.

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Learn next

Turn the estimate into a better setup

If the tool solved the immediate question, this is the next place to go for the broader workflow, tradeoffs, and implementation detail.

Learn how multi-agent systems fit together

FAQ

Should I test a single handoff before an end-to-end run?

Usually yes. It is much easier to debug one transition cleanly than to untangle the entire workflow after it fails downstream.