NexusGuard Layer — Deterministic intent enforcement

The AI banking layer that enforces your intent — not assumes it.

NexusBank introduces a clear separation between AI reasoning and execution. The AI interprets your commands and generates a structured intent. The NexusGuard Layer evaluates that intent against your policies. Only verified actions are executed. No inference. No guessing. No unauthorized transactions.

Open NexusBank app See How NexusGuard Works →Request Early Access

NexusGuard — Live Decision Feed

3 evaluated

✅ALLOW
Transfer ₹12,000 → Priya Sharma
Trusted beneficiary · Within daily limit · 14:22 IST
❌BLOCK
Withdraw ₹2,00,000 at 2:34 AM
Exceeds nightly cap (₹50,000) · Time-window violation
⚠️CLARIFY
Pay ₹75,000 → vendor_xyz
First-time payee · Outside trusted list · Awaiting confirmation

Every decision fully traceable in the audit log

Unauthorized transactions executed through NexusGuard

<0ms

NexusGuard policy evaluation latency

Deterministic outcomes: ALLOW · BLOCK · CLARIFY

NexusGuard. The enforcement layer AI banking has always needed.

Not a feature. Not a filter. A deterministic decision engine that governs every action before execution. The AI proposes. NexusGuard enforces — these are never reversed.

NexusGuard Layer

In traditional AI systems, the AI acts and you find out later. NexusBank reverses this. The AI generates a structured intent object from your natural language command. NexusGuard evaluates it against your full policy model. Only if the action is verified does execution occur. The AI has zero ability to bypass this layer.

Your Policy Model. Your Rules.

NexusGuard enforces exactly what you define — nothing more, nothing less. Set daily transaction limits, trusted beneficiary lists, time-window restrictions, geo-fences, and behavioral baseline rules. NexusGuard applies them deterministically on every action.

Daily limit:₹1,00,000

43% used

Trusted payees: Priya Sharma, Rahul Verma, Axis Bank EMI

Allowed hours: 06:00 – 23:00 IST

New payee action:⚠️ CLARIFY

Exceed limit:❌ BLOCK

Prompt Injection Defense

Malicious instructions embedded in transaction descriptions, memos, or AI inputs are caught and blocked at the NexusGuard evaluation layer — before they ever reach execution.

Immutable Audit Logs

Every user input, AI-generated intent object, NexusGuard policy evaluation, and final decision is recorded. SHA-256 hashed. Tamper-proof. Fully traceable.

AI Reasons. NexusGuard Decides.

This separation is intentional and absolute. The AI interprets natural language and outputs structured intent. It cannot execute anything. Execution authority belongs solely to NexusGuard.

Clarify Before Commit

When instructions are ambiguous, a payee is new, or context is unusual, NexusGuard pauses and surfaces a targeted clarification — never proceeding on assumptions.

Three steps. One deterministic outcome. Every time.

NexusGuard doesn't learn on the fly. It enforces what you defined.

You Send a Command

You type a natural language banking instruction. NexusBank's AI layer parses it and generates a structured intent object — a precise, machine-readable representation of what you asked for. NexusGuard never sees raw chat — only intent.

NexusGuard Evaluates

The intent object is passed to NexusGuard. It runs the action against your full policy model — checking beneficiary trust, limit headroom, time windows, behavioral norms, and historical patterns.

○ Recipient in trusted beneficiary list?

○ Amount within daily remaining limit?

○ Within allowed time window?

○ First-time payee policy?

One Decision. No Exceptions.

NexusGuard returns exactly one outcome. The AI cannot override it. The user cannot be bypassed. The decision is deterministic, explainable, and logged. ALLOW, BLOCK, or CLARIFY — always.

✅ ALLOW

Builder is trusted. ₹75,000 within limit. Executing now.

❌ BLOCK

Amount exceeds remaining daily limit of ₹60,000. Transaction prevented by NexusGuard.

⚠️ CLARIFY

First-time payee. Outside trusted list. Confirm to proceed — NexusGuard awaits your intent.

Built for zero-trust financial environments.

NexusGuard enforces security at the intent layer — before funds move, before APIs are called, before anything executes.

Prompt injection attack prevention
Scope escalation blocking (AI cannot expand its own permissions)
Time-based access control (configurable per user policy)
Geo-restriction enforcement
Behavioral anomaly detection (flags deviations from baseline)
Multi-policy stacking (AND/OR rule logic)
Encrypted, tamper-proof audit trail (SHA-256 per entry)
First-time payee CLARIFY gate

In traditional AI systems: the AI acts, then you review. In NexusBank: the AI proposes, NexusGuard enforces — before a single rupee moves.

✅ ALLOW

Designed for every level of financial autonomy.

NexusGuard scales from individual trust rules to institutional policy engines — same deterministic core, same audit trail.

Enterprise Banks

Deploy AI agents across millions of customer accounts without exposing your institution to unauthorized transaction risk. NexusGuard enforces compliance, policy, and regulatory controls at the intent layer — before execution, at scale.

·RBI-aligned audit exports
·Custom policy engines per customer segment
·SLA-backed enforcement guarantees

NexusGuard API — One call. One decision. Full audit trail.

Evaluate any structured intent against any user policy. Get ALLOW, BLOCK, or CLARIFY — with complete reasoning attached. NexusGuard is the only execution gate.

Read the Docs →View on GitHub →

✅ result: "ALLOW"

❌ result: "BLOCK"

⚠️ result: "CLARIFY"

Full traceability. Zero ambiguity.

NexusGuard doesn't just make decisions — it explains every one of them. Each ALLOW, BLOCK, or CLARIFY is preserved forever in the audit log.

What NexusGuard logs

Every NexusGuard decision records:

•Raw user input
•AI-generated intent object (full JSON)
•Policy evaluation steps (each rule checked)
•Final decision: ALLOW / BLOCK / CLARIFY
•Reason string (human-readable)
•Policy flags triggered
•SHA-256 hash of the full record
•Session ID + timestamp

Audit ID: audit_8xK2pL9

Timestamp: 2025-04-03T14:22:13Z IST

User: usr_9f3k2

Input: "Pay ₹75,000 to my builder"

Action: transfer · ₹75,000 · vendor_xyz

Decision: ⚠️ CLARIFY

Reason: First-time payee outside trusted list

Policy Hit: new_beneficiary_rule

Limit OK: true (₹25,000 remaining)

Time OK: true (14:22 within 06:00–23:00)

Hash: sha256:a3f9c82e...

RBI Audit Ready

ISO 27001 Aligned

DPDP Act Compliant

SOC 2 Type II (in progress)

Start enforcing intent. At any scale.

Every tier runs on NexusGuard — same deterministic outcomes, same audit trail depth.

Starter

Free

Prove intent before you scale.

✓Up to 500 NexusGuard evaluations/month
✓3 user-defined policies
✓ALLOW / BLOCK / CLARIFY decisions
✓30-day audit log retention
✓Community support

Start Free →

Pro

₹4,999/month

Unlimited NexusGuard with priority support.

✓Unlimited NexusGuard evaluations
✓Unlimited policies + nested rules
✓Behavioral anomaly detection
✓1-year audit log retention + export
✓Priority support

Start Pro Trial →

Enterprise

Custom

Dedicated NexusGuard for regulated scale.

✓Dedicated NexusGuard instance
✓Custom policy engine per user segment
✓RBI / ISO / DPDP compliance exports
✓SLA-backed enforcement guarantees
✓Dedicated account + compliance team

Contact Sales →