// GLOSSARY -- AGENTIC FINANCE

What are Agent-to-Agent Payments?

1 min read Updated

Agent-to-agent payments are transactions between AI agents where neither party is human. One agent pays another for services — compute, data, API access — creating a machine-to-machine economy.

WHY IT MATTERS

Specialized agents collaborate: a data analysis agent pays a data collection agent, a trading agent pays a signal agent. These happen without human involvement.

Traditional payments assume a human party. A2A payments need rails authenticating machine identities and settling programmatically.

Crypto — stablecoins on L2s — provides ideal rails: programmable, 24/7, low-cost. Protocols like x402 and A2A standardize negotiation and settlement.

HOW POLICYLAYER USES THIS

PolicyLayer governs A2A flows — validating payment amount, recipient identity, and service category on both sending and receiving sides.

FREQUENTLY ASKED QUESTIONS

How do agents verify each other?
Wallet addresses, attestations, and A2A Agent Cards providing machine-readable identity for pre-transaction verification.
What prevents payment loops?
Spending controls tracking cumulative spend, limiting frequency, and restricting recipient sets prevent circular patterns.
What currency?
Predominantly USDC on Base or L2s. Stablecoins provide the predictable unit of account both agents need.

FURTHER READING

Enforce policies on every tool call

Intercept is the open-source MCP proxy that enforces YAML policies on AI agent tool calls. No code changes needed.

npx -y @policylayer/intercept
github.com/policylayer/intercept →
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