Agent-to-agent communication is still young. Several questions will shape how it develops.
Trust and Identity
How do agents verify each other's identity and reputation? Signed Agent Cards, certification and registries are possible answers.
Commerce and Payments
Agents buying services from other agents need ways to agree prices, authorise payments and resolve disputes within limits people set.
Standards Convergence
Several protocols overlap. Expect consolidation, bridges between protocols, and clearer layering over time.
Governance and Liability
When an agent acting for a company makes a mistake through another company's agent, who is responsible? Law and contracts are still catching up.
Security
Agent networks create new attack surfaces: impersonation, manipulated results and cascading failures. Security practices and tools will need to mature.
Human Control
As delegation chains lengthen, keeping people informed and in control becomes harder and more important.
Practical Advice
Build on open, widely supported standards; keep your agent logic separate from protocol plumbing; and design for change.