For anyone holding a document they didn't write
You're holding a lease, a denial, a bill or a notice that someone else wrote. You get it back in plain language, each answer quoting the words on your page, with your options laid out and the choice left with you.
A cairn is the stack of stones that marks a mountain trail. It shows you the way, and the walking stays yours.
An example, line by line
Plainsight reads documents this way today: each plain-language line is stamped with the exact words it came from. Every engine in the family is built to the same rule.
| What they wrote | What it means, cited |
|---|---|
|
A lease clause "§12(c) Acceleration of Rent. Should Tenant fail to remit any installment of Rent within five (5) days of the date due, Landlord may, at Landlord's sole election and without further notice, declare the entire unpaid balance of Rent for the remainder of the Term immediately due and payable, and may pursue all remedies available at law or in equity." |
Pay rent more than 5 days late, and your landlord can demand the rest of your entire lease term's rent, all at once, with no extra warning first. GROUNDED → your own page, §12(c) |
|
An IRS notice "Notice CP2000. The income and payment information we have on file doesn't match the amounts reported on your tax return. If you don't respond within 30 days from the date of this notice, we will assess the proposed amount and send you a bill." |
The IRS is comparing your return to a W-2 or 1099 it received, and the numbers don't match. Your 30 days start from the date printed on the notice, not from today. GROUNDED → your own page, notice date |
Both are typical of the clauses and notices these engines read. Your own result quotes your own page.
See Plainsight, live ↗The asymmetry
Power moves in the gap between the party who drafted the page and the person who has to answer it, and Cairn is built to close that gap. Each engine reads the exact document in front of you and tells you what it says, what works against you, the options you can choose among, what doing nothing costs, and the point where you should get a real person.
The governing idea: intelligence flows toward the weaker party.
Overwhelming, made manageable
A dense page becomes a few steps you can hold in your head: the deadline, the clause, the number, the option. Each one is cited to the words on your own page and laid down like a stone you can step across.
The engines
Each engine is a tool built for one kind of document. Six are open to the public today, and eight more are built and in private preview before they open. None of them predicts your outcome or tells you what to choose.
Translate the documents institutions send you.
Leases, insurance denials, medical bills, contracts, debt notices, even legislation, put into plain language: what it says, what works against you, your options, what doing nothing costs and when to get a person. Free, always. An optional beta reply drafter helps you write a letter you own and send yourself.
Got charged something unfair? Fight it.
After you're served, billed or cited, Recourse decodes the notice into plain language and lays out the responses you can choose among. It never tells you which to pick or predicts how it comes out. Decoding is free; a flat $25 action packet adds a state-specific plan and a ready-to-send letter.
Finally know what's covered, and what it'll cost.
Reads an aging parent's Medicare and Medicaid paperwork into one view the whole family shares: Summary Notices, denials, eligibility and redetermination, appeal rights and the deadlines printed on the notice, plus a medication-safety check. It knows the door; it never claims the key.
You served. Now make the paperwork serve you.
Decodes VA rating decisions, C&P exam notices, decision-review options and debt letters, with every claim cited to a short quote in your own letter and a deadline shown only when it's printed there. Every result carries a free referral to accredited help.
That IRS letter has a number in the corner. We know what it means.
Decodes IRS and state tax notices into calm, plain language. It leads with the notice code, puts the printed deadline first and flags the scam patterns that prey on the panic. Decoding is free; an optional $25 response pack organizes your paperwork.
Read it before you sign it.
Reviews a lease, job offer, severance, loan or services contract while you can still negotiate: the sign-blockers, what's negotiable, what's market and the walk-away flags. The read is free for everyone; a flat $25 package adds redline language and a negotiation email written in your own voice.
The district has a team. Now you have one too.
Reads special-education paperwork — IEPs, evaluation reports, Prior Written Notices, 504 plans, refusal letters — against the rights printed in IDEA and Section 504, for parents facing a district that brought its lawyers. A flat $25 Meeting Prep Pack turns the analysis into an agenda, the exact words to use, and a put-it-in-writing email.
Entiende cada carta. Understand every letter.
A fully bilingual (English and Spanish) decoder for USCIS and immigration-court notices. The stakes are highest here, so it is the most cautious engine in the family and never assesses eligibility or strategy. Every result ends with real, safe help: accredited representatives, pro bono lists and a warning about notario fraud. Free for individuals, always.
Your student-loan servicer's letters, in plain language.
Decodes federal student-loan servicer notices — IDR recertification deadlines, PSLF payment counts and denials, servicer transfers, delinquency and default letters — and names the current legal uncertainty around your notice type, every time.
Debt collectors have rules. Hold them to it.
A self-help engine for consumer debt disputes: validation requests, credit-report disputes and billing-error letters grounded in the rights printed in the FDCPA, FCRA and FCBA, drafted for you to review, own and send yourself.
Your county says your house is worth more. Make them prove it.
Turns a property-tax assessment notice into an honest, deterministic answer to one question: is an appeal worth it? Often the honest answer is no, and it says so for free. When it is worth it, a flat $25 package assembles the comparables, the deadline and the appeal paperwork.
You may be paying too much in property tax.
A free over-assessment check on your parcel's own data, then a flat $39 ready-to-file appeal packet: the form, the plan, the deadlines and the drafted letter. It's self-help, never representation, and never a percentage of your savings.
The clear line through a lifetime of care.
A calm guide for families supporting a person with a disability, and for self-advocates themselves. SSI and SSDI letters, the age-18 redetermination, Medicaid waiver notices, IEPs, ABLE statements and guardianship papers, explained without ever ruling on them. A wrong move can interrupt benefits, so it always names the office to confirm with first.
The calm center, after.
For the executor or surviving spouse handling everything after a death: death certificates, wills, court and insurer notices, statements and benefit letters, decoded into what each one is, what it's asking, and which office decides. The shared family workspace is free, with no member cap.
Licensed professionals have their own row of working tools, each built to stop where a licensed person takes over: Countersign, Caseload, Recoup and Threshold, deployed as working previews under their own umbrella, the bench network ↗.
Every clause, in your favor.
A specialist's read on the documents you sign, before you sign them: purchase agreements, term sheets, equity grants, loans, prenups, settlements. You get the verdict, a 0–100 risk score, the traps quoted in the exact words on your page, whether each term is market or is being done to you, and the words to send back. It's an analyst. It isn't a law firm.
You can't afford a GC. They know it. Now you can read what you signed.
Reads your business's own contracts and explains them from the document alone: ranked findings with verbatim citations, a personal-guarantee detector that catches what a model would miss, a verified numbers table, and a deadline calendar you can export.
The round closed. The clock didn't.
Turns a Reg CF or Reg A+ raise into an exact, rule-cited filing calendar — computing each due date the way EDGAR does, rolling weekends and federal holidays forward, tracking your rolling raise cap and per-investor limits. Deterministic rules-as-data; every date traces to a citation. We prepare; you file.
Does the EU AI Act apply to you? Find out, for free.
A guided applicability check for the EU AI Act: a question tree where every branch traces to the regulation's primary text. It decodes and doesn't advise, so it tells you which provisions are in play and where the Act says so.
Does their certificate match what your contract requires?
Extracts the insurance coverage your contract requires and compares it against the ACORD certificate the counterparty sent: limits, endorsements and gaps, so the mismatch surfaces before the loss does.
Every requirement in the RFP, in one grounded matrix.
Reads a grant solicitation or RFP and extracts a requirements matrix where every row cites the page it came from. Anything the document doesn't state shows up as a marked placeholder instead of a guess.
Court-ready estate schedules, jurisdiction by jurisdiction.
The professional companion to Afterward. It assembles court-ready estate inventories and probate schedules, with the formatting and content rules of all 51 U.S. jurisdictions carried as cited data, and every unverified rule flagged as exactly that.
The probate paperwork, drafted. A professional approves every word.
Estate-settlement drafting and deadline tracking for California formal probate, built for probate attorneys and their paralegals — institution letters, Judicial Council form prefills, DE-111 attachment narratives, and the statutory deadline skeleton. The system never contacts institutions, courts, heirs, or any third party.
The same cited rules, pointed at the paperwork businesses owe institutions. A person reviews each one before anything real happens. All seven are in development.
Wage-garnishment orders, processed for payroll teams.
Unclaimed-property (escheatment) compliance for controllers.
Certified-payroll & prevailing-wage compliance.
HOA & condo compliance against docs and state statute.
FTC Franchise Rule & state registration renewals, tracked.
The 45/180-day like-kind-exchange clock, kept exactly.
What can be built on a parcel — zoning code as data.
How it fits together
Wherever a document finds you (before you sign, the day it lands, or years into a fight) there's an engine built for that moment, and it hands you on when things change.
One person, one document, three moments, and an engine built for each. You have the most room to negotiate before you sign, so the family starts there and stays with you through the dispute.
Families meet these documents again and again, for decades. Each engine hands off to the next at the moment life changes: the age-18 redetermination, the first Medicare denial, the estate. Same doctrine, same calm, the whole way.
Underneath every engine, the law itself is data — cited, versioned, dated — served from Pandect, the family's shared rules registry. A rule verified once is verified for every engine that cites it, and when the law changes, the change flows to all of them at once. The model is never the source of a rule. On top sits Nexus, the professional layer that turns attested rules into computed deadlines and amounts — for licensed buyers only.
The Benefit Channel delivers the family as an employee and member benefit — through employers, credit unions and unions — so the person holding the document often pays nothing at all. Crossing is free to every individual because organizations sponsor it. And Marque's premium revenue helps keep Plainsight free for everyone. Money moves through the family so intelligence can flow toward the weaker party.
"We read your document itself. Every answer points back to the words on your own page."
What we promise
Anyone can write principles into a footer. Every Cairn engine is built so the software itself enforces these, and anything it can't source is caught before it reaches you.
Every finding is cited to your own document or a versioned rule. Nothing is invented: no dollar amount, date or citation that isn't on your page. A grounding guard strips anything it can't source and discloses the removal.
We lay out your options and how to weigh them. We never tell you which to pick, and we never predict how your case comes out. Cairn is not a law firm.
Money may change who can do more with the tool. It never changes what the tool tells you, or how hard it thinks about your document. The free reading is the same reading everyone gets.
Your document is read to answer your question and is never used to train a model. The limits, the "not legal advice" line and the "who to confirm with" are required fields in every answer.
Under every engine
Every engine runs on one shared architecture, so the model is never the source of a rule and a fix to the core reaches every engine at once.
Cited, versioned, jurisdiction-aware legal rules, served to every engine. Each rule is data with a source and a date, so no engine leans on a model's memory of the law.
pandectai.com ↗The decisioning engine the compliance products run on: intake → assist → gate → engine → guard → audit. The grounding and posture guards live here, so the doctrine is one codebase, applied everywhere.
The computable layer, in development. It compiles attested rules into computed deadlines and amounts, with courtroom-grade provenance, for licensed professionals. Consumers get the citation; a credentialed buyer gets the number.
Plainsight is live and free. Paste a lease, a denial, a bill or a notice and read what it says, with every line cited to your page. The rest of the family opens one engine at a time.