LeanCTX
The Context Gateway for AI systems
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LeanCTX selects relevant context for AI systems, applies security controls before delivery, learns from work patterns, and records what was delivered to the
About LeanCTX
LeanCTX is a context gateway that sits between AI systems and the data sources they access. It selects task-relevant information from your sources, applies configured security rules and filters before delivery to the model, learns from decisions and findings to improve future tasks, and provides evidence of what context was delivered and why.
The platform works through four steps: Select finds relevant information at the right depth for each task; Control applies access boundaries and content filters before anything reaches the model; Learn keeps useful findings and connections between sources for the next session; Prove records source references, policy outcomes and usage for inspection.
LeanCTX is available as open-source Community (free, local), Pro (adds cloud sync and hosted index), Team (shared governance for up to 25 people), and Enterprise (organization controls). It can run locally, in your VPC, on-premises, or offline, and integrates with popular AI tools through SDK, MCP, and hooks.
Features worth knowing
- Source selection and retrieval with task-relevant context at configurable depth
- Access controls via PathJail boundary enforcement and role-based permissions
- Read-time content filters for injection patterns and personal data detection
- Memory and continuity to retain findings and connections across sessions
- Evidence and outcomes recording with source references and usage audit trails
- Integration with AI tools via SDK, MCP, hooks and supported client adapters
- Local, VPC, on-premises and offline deployment options
- Optional production intelligence for planning, ranking and routing enhancements
- SDK with five stable primitives and six Agent Tools language contracts
- Context cache, reference routing and usage accounting
Pricing
Pricing model: Freemium
Community: Free (open-source, local use). Pro: $9/month or $90/year (personal cloud sync, 1 GB hosted index). Team: $29/month per seat or $290/year per seat (team server, shared workspace, 20 GB index, 1-25 seats). Enterprise: Contact for pricing.
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LeanCTX metrics
| Metric | Value |
|---|---|
| Domain Rating | 42 no change since last check |
| Trust Flow | 3 no change since last check |
| Citation Flow | 35 no change since last check |
| Referring domains | 212 no change since last check |
| External backlinks | 1,727 no change since last check |
Ahrefs Domain Rating scanned 6 Nov 2026, updated 4 Nov 2026. Main topic: Computers/Programming/Languages (3). Majestic scanned 4 Nov 2026, updated 4 Nov 2026. Link stats via Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.
LeanCTX domain facts
Reveal the domain facts
| Domain age | 7 months |
|---|---|
| Registered | |
| Expires | |
| Registrar | Key-Systems GmbH |
| DNSSEC | Not signed |
LeanCTX launch results
| Measure | At launch, then latest |
|---|---|
| Domain Rating (Ahrefs) | 42 to 42 no change since launch 4 Nov 2026, then 5 Nov 2026 |
| Trust Flow (Majestic) | 3 first measured 4 Nov 2026 |
| Referring domains (Majestic) | 212 first measured 4 Nov 2026 |
Day 1 since launch. Next receipt: day 30, 4 Dec 2026. The figures report a change; they do not say what caused it, and many things can. No figure here is a guess.
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FAQ
- What does Pro add to Community?
- Community stays complete for local use. Pro adds Personal Cloud sync and backup plus a 1 GB hosted index, within the limits of your selected plan.
- What does Team add?
- Team adds a hosted team server with a shared workspace, role-based access, OIDC single sign-on and an audit log, plus a 20 GB shared hosted index, for 1 to 25 seats. It costs $29 per month per seat or $290 per year per seat.
- What does Enterprise add?
- Enterprise adds organization identity, roles and access controls, plus shared policy, approvals, audit and reporting for your supported workflows, with agreed deployment, recovery and operating support.
- What is included in Community?
- The public Engine includes deterministic context processing, local safety, reference routing, usage accounting, cache, memory and recovery. You provide your tools, model access and infrastructure.
- Where can we run the Engine?
- You can choose managed operations, your VPC, on-premises or an offline deployment profile according to your requirements. Commercial scope covers the agreed components and services.
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