LineageAI™ by PostSig

The
Cross-Document Intelligence

Platform

LineageAI™ is the intelligence foundation behind PostSig. It connects contracts, amendments, invoices, clauses, and related records into a live lineage graph, tracks how terms change over time, and determines what is actually in force now.

Built on that platform, PostSig applications turn documented intent into decision-ready intelligence across renewals, billing, compliance, obligations, and risk.

LineageAI™ is the intelligence foundation behind PostSig. It connects contracts, amendments, invoices, clauses, and related records into a live lineage graph, tracks how terms change over time, and determines what is actually in force now.

Built on that platform, PostSig applications turn documented intent into decision-ready intelligence across renewals, billing, compliance, obligations, and risk.

Meet LineageAI™ Assistant

Meet LineageAI™ Assistant

Meet LineageAI™ Assistant

The answers you need at your fingertips.

The answers you need at your fingertips.

LineageAI Assistant gives the teams closest to execution the tools they need to act quickly, without depending on others to untangle the document chain.

LineageAI Assistant gives the teams closest to execution the tools they need to act quickly, without depending on others to untangle the document chain.

LineageAI Assistant gives the teams closest to execution the tools they need to act quickly, without depending on others to untangle the document chain.

Just Ask.

Ask complex questions across agreements, amendments, side letters, invoices, and approvals—and get evidence-backed answers grounded in the governing terms in force.

Ask complex questions across agreements, amendments, side letters, invoices, and approvals—and get evidence-backed answers grounded in the governing terms in force.

Grounded in governing terms

Grounded in governing terms

Answers based on what is actually in force across related documents.

Answers based on what is actually in force across related documents.

Evidence-backed by source

Evidence-backed by source

Trace every answer back to the agreement, amendment, invoice, or clause.

Trace every answer back to the agreement, amendment, invoice, or clause.

Built for real decisions

Built for real decisions

Understand renewals, pricing, obligations, approvals, and compliance faster.

Understand renewals, pricing, obligations, approvals, and compliance faster.

Lineage AI
Chat History+
What contracts have price escalators?
21 minutes ago
Which contracts have AI related restrictions?
22 minutes ago
Enter prompt here
↵ to send • ⇧+↵ newline • ESC to close • ⌘K sidebar • ⌘⇧K fullscreen
Lineage AI
Chat History+
What contracts have price escalators?
21 minutes ago
Which contracts have AI related restrictions?
22 minutes ago
Enter prompt here
↵ to send • ⇧+↵ newline • ESC to close • ⌘K sidebar • ⌘⇧K fullscreen

The Platform Behind PostSig

The Platform Behind PostSig

LineageAI™ is not a single-document AI tool.

It is PostSig’s cross-document intelligence platform, built to understand agreements as part of a living system. It preserves context as records evolve, resolves what has changed and what governs now, and connects that understanding to execution signals like billing, usage, renewals, approvals, and compliance events. That is how PostSig closes the gap between documented intent and real-world execution.

What Makes LineageAI™ Different

What Makes LineageAI™ Different

LineageAI™ is different because it does not analyze documents in isolation. It reasons across related agreements, amendments, side letters, invoices, and other records, preserves context as terms evolve, and determines what is actually in force now by connecting documented intent to execution signals like renewals, usage, approvals, and billing.

LineageAI™ is different because it does not analyze documents in isolation. It reasons across related agreements, amendments, side letters, invoices, and other records, preserves context as terms evolve, and determines what is actually in force now by connecting documented intent to execution signals like renewals, usage, approvals, and billing.

LineageAI™ is different because it does not analyze documents in isolation. It reasons across related agreements, amendments, side letters, invoices, and other records, preserves context as terms evolve, and determines what is actually in force now by connecting documented intent to execution signals like renewals, usage, approvals, and billing.

Cross-Document Reasoning

Connects agreements, amendments, side letters, invoices, and related records into a single lineage—so terms are understood in context, not in isolation.

Connects agreements, amendments, side letters, invoices, and related records into a single lineage—so terms are understood in context, not in isolation.

Temporal Awareness

Preserves context as terms evolve over time and determines what is actually in force now across changing documents and transactions.

Preserves context as terms evolve over time and determines what is actually in force now across changing documents and transactions.

In-Force Truth

Interprets overlapping, amended, and superseded terms to establish the governing truth behind rights, obligations, pricing, and approvals.

Interprets overlapping, amended, and superseded terms to establish the governing truth behind rights, obligations, pricing, and approvals.

Evidence-Backed Intelligence

Surfaces answers, insights, and alerts with lineage back to source language, giving teams defensible context for action.

Surfaces answers, insights, and alerts with lineage back to source language, giving teams defensible context for action.

Signal-to-Intent Linkage

Connects documented intent to execution signals like invoices, renewals, usage, approvals, and compliance activity to verify whether the business is operating as agreed.

Connects documented intent to execution signals like invoices, renewals, usage, approvals, and compliance activity to verify whether the business is operating as agreed.

Conversational Assistant

Gives users a direct way to ask complex questions and get evidence-backed answers grounded in the governing terms across the full document chain.

Gives users a direct way to ask complex questions and get evidence-backed answers grounded in the governing terms across the full document chain.

LineageAI™ works

for you.

for you.

LineageAI™ doesn’t just show you contract terms.
It tells you what’s currently in force, how it changed, and why it matters—with reasoning logic that turns static documents into dynamic business tools.

Most teams review contracts only when something goes wrong.
PostSig changes that—giving you the clarity to act early, the insight to negotiate confidently, and the tools to stay aligned across legal, finance, and compliance.

This is how contracts move from background noise to operational advantage.

LineageAI™ doesn’t just show you contract terms.
It tells you what’s currently in force, how it changed, and why it matters—with reasoning logic that turns static documents into dynamic business tools.

Most teams review contracts only when something goes wrong.
PostSig changes that—giving you the clarity to act early, the insight to negotiate confidently, and the tools to stay aligned across legal, finance, and compliance.

This is how contracts move from background noise to operational advantage.

Catch billing errors before they cost you.

Catch billing errors
before they cost you.

LineageAI™ reconciles invoices against your full contract stack—detecting pricing mismatches, frequency violations, and unauthorized charges in real time.

Learn more →

Know if your contracts meet regulatory standards.

Evaluate clause coverage against frameworks like DORA and instantly identify agreements that need attention.

Read the blog →

Renegotiation with leverage everytime.

Walk into every renegotiation
with leverage.

Surface outdated terms, silent amendments, and missing protections—before your next renewal conversation begins.

Read the blog →

For Legal, Finance & Compliance Teams

For Legal, Finance & Compliance Teams

Data Teams

The burden sits in the middle.
Data teams sit between Legal, Finance, and Ops—without the tools to track obligations, enforce terms, or manage vendor complexity.

LineageAI™ connects the dots—linking clauses, documents, and context—so data leaders can shift from reactive coordination to proactive control.

Data Teams

The burden sits in the middle.
Market data teams sit between Legal, Finance, and Ops—without the tools to track obligations, enforce terms, or manage vendor complexity.


LineageAI™ connects the dots—linking clauses, documents, and context—so market data leaders can shift from reactive coordination to proactive control.

Data Teams

The burden sits in the middle.
Market data teams sit between Legal, Finance, and Ops—without the tools to track obligations, enforce terms, or manage vendor complexity.

Finance

Manual reviews. Mismatched invoices. Lost leverage.
Finance teams are tasked with reconciling spend—often without clarity on what was agreed, amended, or superseded.

LineageAI™ traces every charge to its contract source—flagging pricing violations, scope creep, and silent changes before they impact your budget.

Manual reviews. Mismatched invoices. Lost leverage.

Finance

Manual reviews. Mismatched invoices. Lost leverage.

Finance

Manual reviews. Mismatched invoices. Lost leverage.

Legal & Compliance

Legal &
Compliance

Missing clauses. Unclear ownership. Regulatory risk.
It’s hard to enforce terms or prove compliance when you don’t know what’s currently in force—or where gaps live across your agreements.

LineageAI™ gives Legal and Compliance teams visibility into clause coverage, amendment history, and regulatory readiness (e.g., DORA)—so nothing slips through the cracks.

Missing clauses. Unclear ownership. Regulatory risk.

Operations

Disconnected workflows. Vendor sprawl. No single source of truth.
Ops teams are stuck stitching together notes, emails, and spreadsheets just to answer basic questions: What are we paying for? Who uses it? When does it renew?

LineageAI™ centralizes vendor relationships, contract lineage, and performance metrics—so operations teams can stay ahead, not catch up.

Disconnected workflows. Vendor sprawl. No single source of truth.

Operations

Disconnected workflows. Vendor sprawl. No single source of truth.

Legal & Compliance

Missing clauses. Unclear ownership. Regulatory risk.

See LineageAI™ in Action

Join leading hedge funds, private equity firms, and financial institutions using LineageAI™ to transform contract operations—across legal, finance, and compliance.