SOX Evidence Mapping for AI Agents
An AI agent that posts a journal entry, reconciles a ledger, or affects revenue recognition is part of internal control over financial reporting. Sections 302 and 404 of Sarbanes-Oxley demand maker-checker controls, segregation of duties, and a reviewable decision record. Veto records each governed agent action as a reviewable control event.
Last updated: May 20, 2026
What is Sarbanes-Oxley?
The Sarbanes-Oxley Act of 2002 (Public Law 107-204) was enacted by the U.S. Congress on July 30, 2002, in response to Enron, WorldCom, and Tyco. Section 302 makes CEOs and CFOs personally responsible for the accuracy and completeness of financial reports. Section 404 requires management to establish, maintain, and assess the effectiveness of internal control over financial reporting (ICFR). The SEC enforces SOX; the PCAOB issues auditing standards. For AI agents, the practical issue is whether financially relevant actions have approval evidence and change history.
Why it applies to AI agents
Any AI agent that touches a financial process may be in scope. That includes order-to-cash agents, procure-to-pay agents, journal-entry automation, intercompany reconciliation, accrual calculation, and agents drafting parts of the close. The COSO Internal Control Framework, commonly used for SOX assessments, organizes ICFR around five components: control environment, risk assessment, control activities, information and communication, monitoring activities. Each component needs different evidence when the actor is non-human.
Segregation of duties is one of the most important SOX control patterns. SOX implementations rely on maker-checker patterns to prevent any single party from initiating and approving the same transaction. An AI agent that can both create and approve a journal entry collapses that segregation. Runtime authorization with approval workflows restores it by routing an agent-initiated transaction to a separate approver before commit.
Control mapping: SOX/ICFR to Veto features
The table maps the SOX provisions and COSO/PCAOB control activities most directly engaged by AI agents in financial workflows.
| Control area | Requirement | Veto feature |
|---|---|---|
| Section 302 | CEO/CFO certify disclosure controls and procedures are evaluated and effective | Decision record evidence supports the 302 evaluation memo for AI agent systems |
| Section 404(a) | Management annual assessment of ICFR effectiveness | Policy-as-code documents control design; decision records document operating effectiveness |
| Section 404(b) | External auditor attestation on ICFR for accelerated filers | Exportable decision records for auditor sampling |
| COSO CA | Control activities: segregation of duties (maker-checker) | Approval workflow routes agent-initiated transactions to independent reviewer before commit |
| COSO CA | Authorization and approval of transactions | Per-tool approval thresholds in policy YAML (e.g., journal entries above $X require approval) |
| ITGC | General IT controls: change management for systems supporting financial reporting | Policy diffs in git with reviewer approval and policy validation where configured |
| ITGC | Logical access controls: provisioning and deprovisioning of access | API key issuance, rotation, revocation with change history; per-agent scoping |
| AS 2201 | Auditor obtains evidence of design and operating effectiveness | Policy files (design) + decision records (operating effectiveness) usable for auditor sampling |
| Monitoring | Ongoing monitoring and periodic evaluation of controls | Workspace with policy violation rates; alerts on unusual patterns; trend reports |
| Decision record | Decision record for transactions affecting financial reporting | Append-only decision record with agent ID, tool, arguments, policy version, outcome, reviewer |
| Section 802 | Retention of audit records related to financial reporting | Configurable retention to support customer-defined financial-record retention policies |
| Exception review | Documented issue review and escalation procedures | Reviewer comments and rejection reasons captured in decision record for follow-up |
Evidence Veto provides
SOX assessments produce two kinds of evidence: control design narratives and control operating-effectiveness samples. Veto outputs can support both.
Control narratives
Policy YAML files document control activities at the tool level. Reviewable in walkthrough sessions with internal and external auditors.
Operating effectiveness samples
Decision record entries support AS 2201 sample testing. Auditor selects N transactions; the log shows agent ID, tool, policy version, approver, outcome.
Maker-checker evidence
Approval queue records document segregation of duties: agent initiated, independent reviewer approved, both recorded with timestamps and identities.
Change management trail
Git pull request history with reviewer approvals, validation runs where configured, and signed commits documents ITGC change controls for the audit.
Implementation timeline
SOX exposure is not only legal. Material weakness disclosure can trigger audit scrutiny, remediation work, and investor trust loss. Veto's role is to preserve approval evidence and policy history for financially relevant agent actions.
Frequently asked questions
Does SOX apply to AI agents?
What is a maker-checker control and why does it matter for AI agents?
What does PCAOB AS 2201 require for IT-dependent controls?
How does Veto support SOX Section 404 management assessment?
Related evidence resources
When an agent posts a journal entry, the auditor still needs evidence. Make it inevitable.