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Email-based · Word-native · attorney-in-the-loop

AI agents
we can trust.

Attorneys work in email and Word. So does mixus. Email your agent, CC anyone who needs to review, and get back work product. All with firm-level oversight.

Book a demoSee the platform

Trusted by Am Law 50 firms.

How it works

The agent does the work.
Attorneys approve it.

  • 01 / Email

    Send work by email.

    Forward the matter. CC reviewers. The agent works in the same thread.

  • 02 / Output

    Get work product back.

    Redlines, drafts, analysis, and spreadsheets return as reviewable files.

  • 03 / Review

    Review & approve.

    Attorneys review changes, issues, and citations.

  • 04 / Playbooks

    mixus learns from your decisions.

    Accept, edit, and dismiss decisions improve future runs.

The Platform

Your past work generates
the playbook.

Upload exemplars once. mixus extracts fallback clauses, unacceptable language, preferred drafting, and review rules. Reviewer decisions keep the playbook current.

System 01

Playbooks: first-class objects,
not uploaded documents.

mixus generates playbooks from exemplar matters and prior work. Scope them by client or contract type. Each playbook stores fallback clauses, unacceptable language, preferred drafting, and review rules.

PlaybookMSA v3.1 · Lumengrid

§ 4.2 Limitation of Liability

Starting position2× annual fees, with $2.5M floor for enterprise customers.
Carve-outs requiredGross negligence · willful misconduct · Section 8 indemnification · confidentiality breach.
Fallback1.5× annual fees with $1.5M floor; escalate to senior reviewer if counterparty refuses.
UnacceptableAny cap below $1M · mutual exclusions of indirect damages without carve-outs.
Versioned · 14 rules · Last edited by M. Hartwell · 03 Apr
System 02

Training: real usage
updates the playbook.

Accept, edit, and dismiss decisions in Word feed back automatically. Each signal records the approving attorney and confidence score.

Reviewer signals28 days
↑ Accepted · §4.2 liability fallback
✎ Edited · §7 IP assignment carve-out
↑ Accepted · §4.2 liability fallback
× Dismissed · §12 audit rights
↑ Accepted · §4.2 liability fallback
✎ Edited · §9 termination notice
Synthesized ruleconf 0.91 · 14 signals

“In enterprise MSAs, always propose liability caps at ≥ 2× annual fees with a $2.5M floor, and preserve carve-outs for gross negligence, willful misconduct, and Section 8 indemnification. Fallback: 1.5× / $1.5M.”

Rule MSA-LIAB-021 · authored by the system, approved by M. Hartwell
System 03

Memory: approved positions
carry forward.

Versioned memory stores each playbook, rule, confidence score, and approval. Similar matters start with the prior position available.

Institutional Memory4 playbooks · 218 rules · v.2026.04
  • PB·001MSA Redline: Enterprise63 rules · 0.87 avg confv3.1 · 03 Apr
  • PB·002NDA Redline: Disclosing Party41 rules · 0.92 avg confv2.4 · 28 Mar
  • PB·003Series A Pro Forma74 rules · 0.84 avg confv1.9 · 12 Mar
  • PB·004M&A Waterfall: Participating Pref.40 rules · 0.81 avg confv1.2 · 04 Mar

“We wouldn’t use agents unless we could stand behind every outcome. mixus gives us the oversight and visibility we need to trust agents with real client work.”

Adam Forest
Adam Forest
Founding Partner, Scale LLP
Practices

Work returns
as reviewable files.

P / 01AI Redline

Redline inside Word.

Contract markups return as Word .docx files with track changes, playbook citations, and issues lists.

  • Word track changes
  • Playbook citations
  • Issues lists
Open page
P / 02Deal Modeling

Models return with live formulas.

Pro forma cap tables, M&A waterfalls, down rounds, and bespoke structures return as .xlsx files with live formulas.

  • Real .xlsx with live formulas
  • 3–5 exemplars to configure
  • < 15 min first-pass
Open page
P / 03Word Add-in

Review inside Microsoft Word.

The Word add-in shows suggestions as standard track changes. Accept, edit, or dismiss decisions train the playbook.

  • Native Word add-in
  • Accept / edit / dismiss in place
  • Redlining in real-time
Coming soon
Email, Word, Chat

Email first.
Word native.

Email

Forward a contract, question, or thread. CC reviewers. Work returns in the same thread.

Word

Suggestions appear as standard Microsoft Word track changes. Accept, edit, or dismiss in place.

Chat

Upload a file. Describe the task. Get a redline, draft, analysis, or model with cited rules.

Deployment

Start with one
legal workflow.

Choose a repeatable task. mixus automatically generates a playbook from exemplars, runs the agent in email and Word, and keeps attorneys in the approval loop.

01Matter type

Pick repeatable work.

Term sheet redlines, privacy policies, data extraction, or any other task your team does on a regular basis.

02Playbook

Build from examples.

Exemplars generate the first playbook. Your reviewers edit and approve it.

03Expansion

Use live matters.

Run real work through email and Word. Use reviewer decisions to improve the next run.

Trust & governance

Enterprise grade
security.

Learn how data is protected, encrypted, retained, and handled by model providers.

Visit trust.mixus.ai
  • 01SOC 2 Type II · annual
  • 02ISO 27001:2022
  • 03GDPR and HIPAA
  • 04TLS 1.3 in transit · AES-256 at rest
  • 05Customer-managed keys (BYOK)
  • 06Zero data retention by model provider

Book a demo

mixus adapts to your
workflows.

Get started with mixus. We'll walk through a few example workflows and show you how mixus can be configured to fit your workflows.

Book a demo