AFFIXIO
Consent verification
How businesses verify user consent for agentic transactions
When an agent acts for a user, merchants and platforms need proof that consent was granted for that action, not a vague terms checkbox. AffixIO returns a signed consent outcome bound to scope, time, and counterparty, so checkout and settlement systems can gate on cryptographic evidence instead of trust assumptions.
Definition
Agentic consent verification is a signed allow or deny that a user granted scoped permission for an agent to act, checkable by merchants and platforms without re-copying the user's identity file.
Field note. Consent stored only in the agent runtime disappears when the model hallucinates a purchase. Wire verify upstream of payment capture.
What a consent proof should contain
Scope, subject binding, expiry, and a verifier-checkable signature. AffixIO packages that as allow or deny with a Merkle reference. The verifier learns the outcome and proof metadata, not the underlying identity documents.
Policy and circuit design can encode revocation windows. Spent-proof patterns prevent replay after a consent presentation has been consumed at a gate.
How businesses wire consent into checkout
Issue consent credentials when the user grants agent authority. At checkout, the agent presents the proof. The merchant or orchestrator verifies before authorising payment. Deny stops the flow. Allow proceeds with an audit reference attached to the order.
This pattern works for one-shot purchases and for recurring agent-billed services where consent must be re-checked per billing cycle.
Production wiring for agentic transaction consent
Place issue at consent or policy satisfaction, then verify at the first external boundary. Deny should return a stable code for support. Allow should attach Merkle metadata to the record your finance or ops team already stores.
When WAN is unreliable, run local verify with cached keys and sync Merkle inclusion later. Offline QR and edge agents use the same spent-proof rules as online gates.
Common blockers
Consent that cannot be verified is not operational
Terms pages and cookie banners do not bind an agent action to a specific purchase, amount, or merchant. Operational consent needs a machine-checkable artefact.
Checkbox consent is not transaction-bound
A one-time acceptance does not prove the user authorised this agent for this counterparty at this time.
Vendor identity sprawl
Pushing full identity into every merchant to prove consent multiplies PII risk without improving the authorisation signal.
Revocation and replay
Without spent-proof or expiry, an old consent artefact can be presented after the user withdrew permission.
Settlement disputes
PSPs and issuers need evidence of consent scope when an agent-initiated payment is challenged.
Gate design
Prove agentic consent before the transaction clears
Merchant consent flows for agent-initiated purchases need a verifier-facing allow or deny, not a database flag the agent wrote itself. AffixIO issues proofs when user policy is met and checks them at checkout.
Capture scoped consent at issue
Bind user, agent, merchants or categories, limits, and validity when the credential is minted.
Present at the transaction edge
Agent attaches the consent proof to the checkout or payment request.
Verify before authorisation
Merchant or PSP gates on signed allow or deny.
Record the Merkle reference
Keep the audit pointer with the order for dispute and compliance review.
Production checks
Readiness checks for agentic transaction consent
- Define consent scopes per agent and merchant class.
- Require expiry and anti-replay on every consent presentation.
- Keep identity documents with the issuer, not at each merchant verifier.
- Train support teams to retrieve Merkle audit refs during disputes.
- Test revoke-and-deny paths in the sandbox before production.
Merchant FAQ
Questions on agentic transaction consent
What should a consent proof contain?
Scope, subject binding, expiry, and a verifier-checkable signature. AffixIO packages that as allow or deny with Merkle reference.
Can consent be revoked?
Policy and circuit design can encode revocation windows. Spent-proof patterns prevent replay after use.
Does the merchant see the user's documents?
No. By default the verifier receives the signed outcome and proof metadata, not document images or full identity records.
Is this a substitute for T&Cs?
No. Legal terms still apply. This adds a cryptographic, transaction-bound consent signal for agent actions.
Continue here
Pages that support agentic transaction consent
Agentic payments
More agentic payments briefs
Run agentic consent checks in sandbox
Exercise issue and verify on your consent circuit, then attach the same hook to your production checkout.