LexCore Platform Architecture

Eleven integrated systems for legal review, redlining, and audit proof

LexCore replaces fragmented point tools with a unified legal intelligence platform. From OCR ingestion and multi-agent adversarial review to native Word redlines and cryptographic audit chains.

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01Core Guardrail

CitationGate™ Verification Engine

Deterministic character-offset quote verification

Every AI assertion is mechanically checked against the raw document string. If an exact character span cannot be verified, the finding is dropped. Employs 3-state traffic lights: Green (verified, clean offset), Amber (challenged or stale citation), Red (contradicted or unresolvable quote).

✓Exact character start/end offsets (e.g., @14,230–14,312)

✓Zero hallucinated citations — ungrounded claims fail closed

✓Confidence probe score (0–100%) and citation freshness rating

✓Audit-logged verification receipts for every reviewed clause

System Module // citation-gate

[TRAFFIC: GREEN] Character range @9,441–9,495 matched 100%. Confidence: 99.4%.

[TRAFFIC: AMBER] Citation present but precedent stale (CA/L/2019 superseded).

[TRAFFIC: RED] Assertion ungrounded in text. Dropped from report.

API Version: /api/v1/casesRequest demo →

02Reasoning Engine

Multi-Agent Adversarial Debate

Multi-round dialectic review between specialized agents

Recruits specialized agents based on document typology (Commercial Risk, Nigerian Jurisdiction, Regulatory Compliance, Ambiguity Detection). Agents conduct 1 to 5 rounds of structured debate, challenging assumptions until reaching mathematical consensus.

✓Specialist recruitment based on contract jurisdiction and domain

✓Configurable 1 to 5 debate rounds with consensus convergence

✓Deterministic credit pricing: extra rounds cost 110% of first round

✓Full debate transcripts viewable in the reasoning trace panel

System Module // multi-agent

Jurisdiction Agent (Nigeria)Consensus 98%

Commercial Risk AgentConsensus 95%

Regulatory Specialist (CAMA 2020)Consensus 99%

API Version: /api/v1/casesRequest demo →

03Playbook Engine

Playbook Comparison & Clause Intelligence

Enforce house positions, fallbacks, and precedent standards

Compares incoming contract terms against your firm's or organization's structured playbook. Identifies deviations in liability caps, indemnities, IP rights, and governing law, automatically suggesting pre-approved Tier 1 and Tier 2 fallback clause replacements.

✓Custom rule definitions for standard and non-standard positions

✓Structured fallback hierarchy (Standard → Fallback 1 → Fallback 2 → Hard Stop)

✓Precedent frequency counter tracking identical past deal clauses

✓One-click insertion of approved house language into redlines

System Module // playbook-matcher

Fully integrated into the core LexCore engine. Telemetry, state mutations, and outputs are synchronized across web-app and Word add-in surfaces.

API Version: /api/v1/casesRequest demo →

04Document Engine

Native Word (.docx) Redline Engine

Character-level OpenXML tracked changes without layout corruption

Directly edits the underlying OpenXML package of Microsoft Word documents. Produces clean, native tracked changes (w:ins and w:del elements) and margin comments (w:comment) that preserve complex tables, legal numbering hierarchies, and firm formatting.

✓Preserves 100% of Word formatting, headers, footers, and styles

✓Exact character-level tracked insertions and deletions

✓Native Word sidebar comments linked directly to reviewed spans

✓Instant .docx download ready for partner review and opposing counsel

System Module // native-word

OpenXML Output Spec

• w:ins author="LexCore" date="2026-08-20"

• w:del author="LexCore" (Liability cap modified)

• w:commentAnchor linked to Clause 14.2

API Version: /api/v1/casesRequest demo →

05Ingestion System

Dual Ingestion & High-Fidelity OCR

Table-preserving parsing for native and scanned legal documents

Handles both native text and scanned PDF executions. Employs a dual-lane strategy: Mistral-OCR for complex multi-column legal layouts, execution blocks, and tables; Sovereign OCR for 100% local, air-gapped processing. Reports a scan fidelity score before review begins.

✓High-fidelity OCR with structural table and grid reconstruction

✓Scan fidelity scoring with automatic warnings for degraded scans

✓Dual-lane routing: Quality OCR (cloud) or Sovereign OCR (local)

✓Extracts metadata: parties, execution date, and governing law

System Module // dual-ingestion

Fully integrated into the core LexCore engine. Telemetry, state mutations, and outputs are synchronized across web-app and Word add-in surfaces.

API Version: /api/v1/casesRequest demo →

06Data Sovereignty

Sovereign Local Inference & Air-Gap VPC

Zero-cloud-egress processing on local in-region compute

For confidential dispute memos, government agreements, and matters under strict privilege policies. Runs on local CPU/GPU models (Gemma 4, Llama 3.1, Nomic Embed) hosted inside Nigerian data centers or directly in your air-gapped private VPC.

✓Zero cloud model egress — text never touches OpenAI, Anthropic, or Google

✓Air-gapped deployment option with cryptographically signed offline licensing

✓Enforced in router code: Sovereign matters cannot fall back to cloud

✓Full NDPR data residency compliance with published sub-processor logs

System Module // sovereignty

Fully integrated into the core LexCore engine. Telemetry, state mutations, and outputs are synchronized across web-app and Word add-in surfaces.

API Version: /api/v1/casesRequest demo →

07Practice Management

Matter Management & Proactive Intake

Multi-channel intake triage, conflict detection, and auto-docketing

Centralizes contract ingestion from Slack, WhatsApp, email, and manual uploads. Automatically assigns client Matter IDs, checks counterparties for potential conflicts, extracts key obligations, and dockets court/statutory deadlines into your calendar.

✓Intake watchers for email inboxes, Slack channels, and WhatsApp

✓Automated Matter ID tagging and client billing isolation (PostgreSQL RLS)

✓Counterparty conflict detection across active and closed files

✓Litigation and contractual deadline calendar synchronization

System Module // matter-intake

Fully integrated into the core LexCore engine. Telemetry, state mutations, and outputs are synchronized across web-app and Word add-in surfaces.

API Version: /api/v1/casesRequest demo →

08Safety Architecture

Human Gates & LAM Staged Effects

Reversible action models with mandatory human authorization

External actions (sending client update emails, filing registry notices, dispatching redlines to counterparties) are prepared as Large Action Model (LAM) staged effects. No external mutation occurs without explicit, recorded sign-off from an authorized human counsel.

✓Staged effects expire if not authorized within configured time limits

✓Role-based approval thresholds (Associate, Senior Counsel, Partner)

✓Reversible staging pipeline preventing automated misfires

✓Full audit logging of the authorizing user and timestamp

System Module // human-gates

Fully integrated into the core LexCore engine. Telemetry, state mutations, and outputs are synchronized across web-app and Word add-in surfaces.

API Version: /api/v1/casesRequest demo →

09Entity & Compliance

Regulatory Radar & Corporate Entity Intelligence

Nigerian statutory tracking and CAC company registration lookup

Monitors Nigerian legislative and regulatory changes (NDPR, CAMA 2020, FCCPC, CBN circulars) and highlights non-compliant contract terms. Integrates with the Corporate Affairs Commission (CAC) database to verify company numbers (RC/BN) and active directors.

✓Continuous monitoring of Nigerian legal and statutory frameworks

✓Direct Corporate Affairs Commission (CAC) company verification

✓Director and ultimate beneficial owner cross-referencing

✓Statutory compliance calendar with statutory filing reminders

System Module // regulatory-radar

Fully integrated into the core LexCore engine. Telemetry, state mutations, and outputs are synchronized across web-app and Word add-in surfaces.

API Version: /api/v1/casesRequest demo →

10Visual Workspace

Interactive Twin-View & Clause Heatmap

Synchronized dual-pane comparison and document-wide risk density

Side-by-side split screen providing live synchronized scrolling between original text and the proposed redline. Visual clause heatmap shows risk distribution across the entire contract, allowing reviewers to jump immediately to high-risk liability and indemnity sections.

✓Synchronized dual-pane scrolling between original and redline

✓Visual risk heatmap displaying severity density across all pages

✓Instant filtering by risk category (Liability, Indemnity, IP, Termination)

✓Visual transaction timeline and chronological obligation dockets

System Module // twin-view

Fully integrated into the core LexCore engine. Telemetry, state mutations, and outputs are synchronized across web-app and Word add-in surfaces.

API Version: /api/v1/casesRequest demo →

11Audit Integrity

Immutable Cryptographic Audit Trail

SHA-256 hash chaining of all AI findings, gates, and redlines

Every contract change, reviewer annotation, AI reasoning trace, and human gate approval is written to a cryptographic hash chain. Produces tamper-evident custody receipts suitable for court submission, regulatory audits, or internal governance reviews.

✓SHA-256 hash chaining securing every state transition

✓Exportable PDF and JSON audit certificates with verification proofs

✓Tamper-evident logs showing exact timestamp, user ID, and model lane

✓Meets evidentiary standards for dispute resolution and NDPR compliance

System Module // audit-trail

HASH CHAIN:

#312: 8f9b4c02e1a4d782...

#313: 4a2e91cf8810b37d...

Zero mutable history · Verified on write

API Version: /api/v1/casesRequest demo →

Experience the complete platform

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