Liminalis
About what this is
and where it actually stands
About

Built by working on a real corpus, not on a demo.

Liminalis started as a way to stop losing the thread in a long manuscript, and turned into the more general problem underneath: how do you make a body of documents behave like knowledge, and then prove that it worked?

§ 01 how it got here
§ 01  The shape of the work

Three phases, each one making the last one honest.

  1. A workspace that knows its own corpus

    Typed documents on disk, a background knowledge layer derived from them, and a grounded assistant over the top. The features people notice — the weave board, chronicles, validation — all sit on that foundation.

  2. Then: prove the retrieval actually works

    A hand-authored benchmark over a real project, an ablation ladder, and a willingness to delete features that measured as no better than nothing. This is where the interesting results are, including several that contradicted the assumptions the work started from.

  3. Then: prove the engine isn't about fiction

    The lens was factored into a real abstraction, and then tested by building a third one over ten thousand pieces of legislation. That's what turns “a writing app with two modes” into a platform claim you can defend in a technical conversation.

Who builds it

Eva Lothian is a system architect, with a doctorate focusing on integrative social science, and intrigued by the capabiliites of Artifical Intelligence. If you'd like to contact her, connect on LinkedIn: https://www.linkedin.com/in/lothian/ PLACEHOLDER: a short paragraph about you — background, why you built this, and what you're looking for. Two or three sentences is plenty.

§ 02 maturity
Read thisbefore quoting anything else on the site
§ 02  What's actually shipped

The table nobody puts on a marketing site.

Every other page here describes what the system does. This one says how far each part has actually been proven. “Built and compiles” is not the same as “verified in live use”, and pretending otherwise is how technical credibility gets spent.

State What's in it
Live-verified Documents, editor, tree, folder notes, split view, import · grounded chat and thinking levels · the full retrieval stack (hybrid recall, reranking, contextual embeddings, tiered context, context budget) · the background knowledge workers (extraction, summaries, motifs) · Reverse Index, Project Overview, Context Summary, Structure · reasoning control and the thinking box · context depth indicator · selective editing and draft proposals · the lens abstraction and lens-scoped retrieval · Campaign mode through live play, access control and reuse checks · the Legislation lens including corpus ingest, families, escalation and the insight charts · the agent API and MCP server, including cross-turn chat memory · the pipeline-graph engine and executor · auth, sharing, credits and billing · The Pacing Watcher — tested and works · Bluesky / AT Protocol login — tested and verified · Unified campaign-and-series generation — tested and verified · The desktop client — complete and working well
Built & build-verified,
not yet proven in real use
Parts of the legislation lens that depend on model calls were build-verified only, because provider quota ran out during that phase.
Built, then deliberately
switched off
On-demand context expansion — fired zero times across 41 queries under two different prompts. · A second, related retrieval escape hatch that was never observed firing at all. · Diversity reranking with adaptive result counts — measured as a no-op, and actively risky on narrative material. · An “amendment aggressiveness” metric in the legislation lens, deleted after its input distribution turned out to be a PDF-converter artifact. Optional retrieval features live behind configuration and all default to off.
Planned only Legislation-specific validation. · The visual node-graph pipeline builder — it needs a library decision that hasn't been made. · Trigger kinds beyond document-triggered pipelines. · Cross-project world reuse — two candidate designs, neither chosen. · Additional lenses. · Chat auto-renaming. · No mobile client.

Where a page elsewhere on this site describes something in the second or fourth row, it says so on that page too.

§ 03 known limits
§ 03  Open problems

The things that are genuinely unresolved.

Multi-document synthesis quality is unmeasured, not bad

The bench can't currently price it well enough to make a claim either way. The first attempt to measure it turned out to be measuring the grader. That's an honest “we don't know”, not a hidden weakness — and it's the reason no synthesis number appears anywhere on this site as a product claim.

The cognitive layer has no number attached

The ACT-R activation model and the association graph it spreads over are, arguably, the most distinctive thing here — and they are the part the benchmark cannot price. A fixed-corpus, single-shot bench scores a cold graph, while the entire value of that layer is history-dependent. Building an evaluation that can actually observe a graph getting better as a project is worked in is open, unstarted work, and no performance claim is made for it in the meantime.

Two retrieval categories are measurably softer

Questions about long-range arcs, and questions that require stitching across documents, both score below the rest. Both are named rather than averaged away.

Scale, not lenses, was the real problem

Building a third lens over ten thousand documents generalized cleanly at the lens layer. What broke was code that had quietly assumed a few hundred documents. Those were fixed — but one index operation at that scale remains unmeasured, and it is logged as the open scale risk rather than assumed fine.

Some good features have never met a real user

The Pacing Watcher is the clearest case: a genuinely novel piece of autonomous steering that has never run at an actual table. Until it has, it's a design, not a result.