AFFIXIO
Chargeback defence
Chargeback defence with signed payment permission
Agent-initiated payments create new dispute narratives. Signed payment permission and Merkle audit references give merchants and issuers evidence that policy allowed the spend at authorisation time.
Definition
Chargeback defence with signed permission uses AffixIO allow or deny artefacts as cryptographic evidence in payment dispute packs.
Field note. Logs say the agent tried to pay. Signed permission proofs say the user authorised it. Your dispute team needs the latter.
What to store on the order
Payment permission allow, agent eligibility, consent proof references, and Merkle anchors. Keep them beside the PSP transaction ID.
Fraud scoring still matters for behaviour. Signed permission answers whether spend was allowed under policy.
Working with issuers and PSPs
Agree field names early. A proof your PSP cannot surface in a dispute portal will not help. AffixIO supplies the verification outcome. Your payment stack still owns money movement and scheme rules.
Practice retrieval on sandbox transactions before live agent traffic.
Integration notes for chargeback defence proofs
Map chargeback defence proofs to a single verify endpoint even if multiple protocols feed the same checkout or tool surface. One permission layer reduces drift between AP2, UCP, and direct REST integrations.
Review deny rates weekly during pilot. Spikes often trace to policy drift or clock skew on expiry, not fraud.
Shadow exposure
He-said-she-said in agent commerce
When an agent pays, merchants, users, and agent operators can all disagree about authorisation. Logs alone rarely settle it cleanly.
Missing authorisation artefacts
Orders lack a signed permission reference.
Opaque partner letters
Marketplace emails are not independently verifiable.
Slow packs
Analysts rebuild timelines from fragments.
Practical wiring
Chargeback defence built on signed payment permission
Chargeback teams lose disputes when the only evidence is application logs, not verifier-checkable permission proofs. Issue signed allow proofs before capture and attach Merkle refs to the order.
Instrument permission verify
Before capture.
Persist AffixIO refs
On the order.
Template the dispute pack
Include Merkle and allow.
Train dispute analysts
Retrieve and explain.
Gate checklist
Readiness checks for chargeback defence proofs
- Add AffixIO fields to order schema.
- Update chargeback runbooks.
- Align PSP on metadata passthrough where possible.
- Test pack assembly monthly.
- Link risk systems to permission outcomes.
Compliance FAQ
Questions on chargeback defence proofs
Does this guarantee win rates?
No. It improves evidence quality. Scheme rules still apply.
User says they never consented?
Consent proofs and permission scopes are the artefacts to present.
Refunds?
Still via PSP. AffixIO gated the original permission.
Sector guide?
/sectors/agentic-payments
Related briefs
Pages that support chargeback defence proofs
Agentic payments
More agentic payments briefs
Build chargeback-ready permission proofs
Issue and verify payment permission in sandbox, then export a sample dispute packet your finance team can replay.