Keep member-only content for members, in one AI assistant.

Public visitors and members ask the same assistant. Each answer only uses the tiers that person holds.

Example from the Process Safety Library

Question: What were the root causes of the Texas City explosion?

Process Safety Library

Maren HoltProcess safety engineer

Corporate

Strong match

The CSB traced the March 2005 explosion, 15 killed and 180 injured citation 1, to failures at three levels:

Board: The Group Board “did not provide effective oversight” of safety culture citation 2
Site: No reporting and learning culture; procedures were not enforced citation 2
Unit: No flare on the blowdown system; no automated high-level controls citation 3

CSB 2005-04-I-TXp.17

p.210

p.211

3 tiers searched · 3 pages citedCited

Luis ArcePlant operations supervisor

Member

Strong match

The CSB traced the March 2005 explosion, 15 killed and 180 injured citation 1, to failures at three levels:

Board: The Group Board “did not provide effective oversight” of safety culture citation 2
Site: No reporting and learning culture; procedures were not enforced citation 2
Unit: No flare on the blowdown system; no automated high-level controls citation 3

CSB 2005-04-I-TXp.17

p.210

p.211

2 tiers searched · 3 pages citedCited

Jordan PikeEngineering student

Public

Not in your accessThe CSB final reports are Member content.

From the public recordThe CSB investigated the March 23, 2005 explosion at BP Texas City: 15 killed, 180 injured. Its root-cause findings sit in the final report.

CSB 2005-04-I-TX Member content · p.210

1 tier searched · 0 pages cited

Examples are built on public documents; access tiers are simulated.

Paid content is either locked away or given away.

Associations want AI answers for everyone, but reports and standards members pay for can’t end up in a public visitor’s answer. A login wall lowers use, and a separate bot for each audience doubles the work.

How Chairlift handles it

Each document carries a tier: public, member, corporate or an add-on module.
Each person carries grants, mapped from your groups and signed in through SSO.
Chairlift searches only the documents a person’s grants allow, so locked content never reaches the answer.

One library. Each person searches only their part.

Every answer above was written from the documents lit for that person. Nothing locked was searched.

Each document in the Process Safety Library, whether each person’s grants open it, and whether their answer cited it.
Document	MarenCorporate	LuisMember	JordanPublic
29 CFR 1910.119 Public	Opens	Opens	Opens
OSHA 3132 Public	Opens	Opens	Opens
CSB 2005-04-I-TX Member	Cited	Cited	Locked
CSB 2008-3-I-FL Member	Opens	Opens	Locked
CSB 2013-02-I-TX Member	Opens	Opens	Locked
CSB 2019-04-I-PA Member	Opens	Opens	Locked
40 CFR Part 68 Corporate	Opens	Locked	Locked
EPA RMP guidance Corporate	Opens	Locked	Locked