Public Engine
Free
Free forever for local open-source Engine use; no Thinkery account required.
- Local gateway
- Sources, search, read modes, local safety rules, cache, memory, receipts, and recovery without a private runtime account
lean-ctx
● Identity checkedDeveloper tools · Vendor site 2026-10-04
LeanCTX is a context gateway that sits between AI assistants and the systems they read. It selects relevant evidence, applies supported access and safety controls, records what the integration observed, and offers SDK, Personal Cloud, and Enterprise options for teams that need governed context delivery.
- Category
- Developer tools
- Free access
- Public Engine tier is $0 and Apache-licensed for local Context Gateway use without a Thinkery account; model and infrastructure costs remain separate.
- API access
- LeanCTX SDK and Integrations pages describe building LeanCTX into apps and connecting external tools; Enterprise Engine adds organization controls.
Is lean-ctx right for you?
A good fit for
Developers and enterprises in legal, finance, healthcare, manufacturing, and software engineering who need scoped, auditable context for AI workflows.
Before you choose
Personal Cloud Pro includes a 1 GB hosted index and plan limits; after a 14-day trial, Pro renews at $9 per month or $90 per year unless canceled.
Control what your AI can see
LeanCTX homepage tagline emphasizes selecting relevant context, applying supported controls, and recording what integrations can observe between AI and upstream systems.
What it can do
Features & capabilities
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Context control | Product pages describe shaping what models see via Context Gateway, Sources & Retrieval, Context Control, and Memory & Continuity modules. | Facts sourced | 2026-10-04 |
| Open-source engine | Pricing page states the public Engine is Apache-licensed and runs locally without a Thinkery account. | Facts sourced | 2026-10-04 |
Understand the total cost
lean-ctx pricing & plans
Personal Cloud Pro
$9.00 /mo
14-day free trial, then $9 per month or $90 per year; cancel any time before renewal.
- Cloud sync
- Personal Cloud sync and backup plus 1 GB hosted index within plan limits
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Frequently asked questions
What is lean-ctx used for?
LeanCTX is a context gateway that sits between AI assistants and the systems they read. It selects relevant evidence, applies supported access and safety controls, records what the integration observed, and offers SDK, Personal Cloud, and Enterprise options for teams that need governed context delivery.
Does lean-ctx have a free plan?
Public Engine tier is $0 and Apache-licensed for local Context Gateway use without a Thinkery account; model and infrastructure costs remain separate.. This record lists ongoing free access; check the plan limits before starting.
How much does lean-ctx cost?
The listed monthly price is $9.00 USD at monthly billing. See the plan cards for entitlements, billing commitments and seat minimums.
Can I use lean-ctx through an API?
LeanCTX SDK and Integrations pages describe building LeanCTX into apps and connecting external tools; Enterprise Engine adds organization controls.. API access and subscription access may have different terms; consult the linked sources.
What should I check before choosing it?
Personal Cloud Pro includes a 1 GB hosted index and plan limits; after a 14-day trial, Pro renews at $9 per month or $90 per year unless canceled.
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Identity and profile
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.