Establish the legal principal: in every agent payment flow, a human or legal entity must be the named accountholder on the card and the responsible party for all transactions — the agent is a tool acting on their behalf, not an independent financial actor; document this relationship explicitly.
Complete KYC for the human or business principal through your PSP or card issuer's onboarding flow before enabling any agent spending; the KYC is on the human, not the agent, but the agent's spending activity will be attributed to that identity.
Review the ToS of every PSP, card network, and merchant you plan to use with an agent: Visa and Mastercard rules, many PSP agreements, and most merchant agreements explicitly prohibit automated entry of payment credentials or bot-driven purchases; confirm your use case is permitted in writing where possible.
For platforms that issue cards to businesses (Stripe Issuing, Marqeta, etc.): the issued card must be in the name of the business or an authorized employee, not an AI agent; the business bears full liability for agent-initiated charges.
For agent-to-agent payment flows: consult a payments lawyer on money transmission licensing requirements in your jurisdiction; in many US states and internationally, facilitating payments between third parties requires a money transmitter license even if amounts are small.
Maintain a compliance record: documentation of the human principal's consent to agent spending, the scope of delegated authority, and the KYC record; retain for the duration required by your PSP agreement and applicable law.
Known gotchas
Many PSPs' acceptable use policies prohibit 'automated account access' or 'bot-driven transactions' without explicit prior approval — violating this, even inadvertently, can result in account termination and fund freezing; get written approval from your PSP for your specific use case before going to production.
GDPR, CCPA, and similar privacy laws apply to the processing of payment data by AI systems — the agent processing payment details is a data processor; ensure your data processing agreements, privacy policy, and retention policies cover AI-mediated payment flows explicitly.
Card network rules on merchant-initiated transactions require a cardholder-initiated mandate as the basis for every off-session charge; an agent that charges a card without a valid, documented cardholder authorization for that specific charge type can trigger chargeback liability and interchange penalties regardless of whether the human 'meant' to authorize it.
Give your agent this knowledge — and 200+ more routes
One MCP install gives any agent live access to the full route map, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp