Chainlocker eDiscovery
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Chainlocker for law firms

Run your review playbook against every document. The same way, every time.

Chainlocker helps law firms run their document review playbooks in a standardized, repeatable way. Give it the matter's criteria, point it at the production, and every document comes back tagged, with written reasoning for what was found and a confidence score. It takes the routine first pass off a junior's desk. It does not give legal advice: every judgment stays with the lawyer.

Coming soon, targeting late 2026 On-premises Not legal advice Fixed cost
Test it and give feedback → See the demo →
How a playbook run works

Your playbook becomes a criteria list. Chainlocker runs it.

Standardized · repeatable · reviewable
01

Write the playbook as criteria

The tags you want applied and the instructions for applying them: the clauses to find, the phrases to flag, the categories a document can land in. Saved per matter, reusable across matters.

02

Point it at the production

A shared folder of PDFs, Word files, spreadsheets, email exports, and scans. It lists every file it understands and shows the count before anything runs.

03

Every document, tagged and explained

Each document gets a tag from your list, written reasoning that says what was found, and a confidence score. Anything below the floor you set is routed to review, not filed.

04

A lawyer confirms

Accept by default, reject with a correction. Working through a thousand documents this way is fast, and every verdict is recorded with who decided and when.

05

An index you can defend

An Excel index with a clickable link to every file, plus an offline package that opens straight off a laptop in a courtroom with no wifi.

06

Next matter, same playbook

The criteria list is the standard. Run it again on the next production and the review is done the same way, whoever sits in the chair.

Scope

Routine grunt work, off the desk. Legal judgment, untouched.

What Chainlocker does
  • Tags documents against your criteriaEvery file in the production, judged against the playbook you wrote, the same way each time.
  • Flags what it found, in writingEach tag comes with reasoning: the clause, phrase, or content that drove it, so a reviewer can check the call in seconds.
  • Reports how sure it isA confidence score on every judgment and a floor you control. Uncertain calls go to a person.
  • Produces the index and the packageExcel for the team, an offline HTML viewer for the courtroom, with links that still work on a USB drive.
What it doesn't do
  • Give legal adviceIt doesn't tell you what a clause means for your client, or what to do about it. That's the lawyer's job, and it stays that way.
  • Draft or negotiateNo generated memos, no redlines, no arguments. It sorts and flags; it doesn't write your work product.
  • Decide privilege or relevance for youIt can tag against criteria you set, but the call on every document is confirmed by a person before anything leaves the tool.
  • Send documents to a public cloudDocuments stay on the appliance in your office. Inference runs on hardware we own, over a private encrypted link.
What a playbook looks like

Your terms, your tags, your instructions.

A playbook in Chainlocker is a list of tags and the instructions for applying them. Nothing about it is hardcoded, and nothing is supplied by us. The example here is illustrative, a shape rather than a recommendation. Your practice group writes the real one, once, and it becomes the standard every reviewer runs.

We'd like to see how your firm's playbooks are actually written. If you review contracts, productions, or diligence rooms and can spare an hour to walk us through what juniors are asked to look for, that shapes what we build.

Talk to us about your playbook →
Example criteria list · contract productionIllustrative
Change of controlFlag any provision triggered by a merger, sale, or transfer of ownership.
AssignmentFlag restrictions on assigning the agreement, and any consent requirements.
IndemnificationFlag indemnities given or received; note any uncapped exposure.
Limitation of liabilityFlag caps, exclusions, and carve-outs.
TerminationFlag termination for convenience and notice periods.
Not a contractCorrespondence, invoices, and other material that isn't an agreement.
Each document gets one tag, written reasoning, and a confidence score. Yours will differ.
Where client documents live

On a machine in your office, not in someone's cloud.

Chainlocker runs on a dedicated appliance installed at the firm and is reached from a browser on your LAN or VPN. Documents never leave it. AI inference runs on hardware we own over an encrypted private link, never a third-party AI API, so there is no usage meter and no provider terms of service between you and your client's files.

The deployment model in detail →
Feedback partners

We're looking for attorneys to try it and tell us what's wrong.

Chainlocker is in development, targeting late 2026. Before it ships we want practicing lawyers running their own playbooks through it and telling us where it falls short. If that's you, or someone at your firm, we'd like to hear from you.

Become a feedback partner → See the interactive demo