The Lotvs blog. Money for AI agents, in plain words.

Tutorials and comparisons on money for AI agents: budgets and limits over MCP, charging agents per request with x402, and the protocols agents pay with. Every fact links to its source.

ComparisonOctober 17, 20266 min read
x402 vs AP2 vs ACP: which protocol pays for what
x402 lets an API charge per request, AP2 proves a person authorized what their agent buys, and ACP runs a checkout between an agent and a shop. Compared from each protocol's own documentation, as of October 2026.

The Lotvs blog. Money for AI agents, in plain words.

x402 vs AP2 vs ACP: which protocol pays for what