Documentation
DOCS.
Everything you need to understand, configure, and build on Lengdon.
01
Getting started
What is Lengdon?
The closing infrastructure explained.
Creating your account
Founder vs investor accounts, and what changes.
Your first deal room
Step-by-step: room setup, inviting the other party, and the NDA stage.
Understanding the closing sequence
What each stage requires and why the order matters.
02
Deal rooms
Room types and use cases
SAFE, Equity, Debt, and Company Sale instruments.
Inviting the other party
How access starts, and how per-person NDA acceptance works.
Document management by stage
Which documents attach to which stage and why.
Condition management
Defining and confirming condition precedents within a room.
03
Closing sequence
Counsel
Legal review confirmation by both parties.
Agreement
Term acceptance and document execution.
Conditions
Condition precedent tracking. The step itself is enforced; which party clears which condition is agreed between them directly.
Signing
Formal execution of transaction documents.
Payment
Investor confirms transfer, founder confirms receipt.
Close
Mutual confirmation seals the record permanently.
04
Audit & records
How the audit log works
Append-only, tamper-evident. What that means.
Evidence tiers
The Preferred, Alternative, or Minimum evidence standard every disclosure is built against.
Reference numbers
How every deal room, document, and record gets a checkable reference.
Legal defensibility
How Lengdon records are used in disputes and audits.
05
Security
Encryption at rest and in transit
What is encrypted, how, and with what keys.
Per-person NDA enforcement
Each person who enters a room accepts the NDA individually.
Access control and permissions
Row Level Security scoped to each account. Who can see what and when.
Data storage and retention
Where your data lives and how long it is retained.
Quick start
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