# Claude builds the model. Rockhopper audits it. Claude generates the model. Rockhopper governs. Model-building and independent audit, working as one - the AI finance stack your organization can actually trust. Claude Domain ## Intelligence. Analysis. Generation. - Builds financial models - Updates assumptions at scale - Generates variance commentary - Answers financial questions Rockhopper Domain ## Trust. Control. Accountability. - Tracks every cell Claude touched - Observe AI cell changes inside spreadsheet - Holds immutable audit trail - Enables one-click revert The new bottleneck ## Reviewing models was hard before. Now, it feels impossible. Your team moves fast with AI agents — Copilot, Claude, custom analysts. But fast shouldn't mean unaudited. Every model that reaches a CFO needs an independent reviewer who actually understands the math. "Did you check the Q4 model the agent built?" "Which one? It's shipped 14 versions today." The governance and audit layer ## Let Claude build the model. Rockhopper proves it can be trusted. An independent audit layer for every change an AI agent makes inside Excel and Google Sheets. Cell attribution ### Every cell Claude touches, attributed. Cell-level attribution for every agent edit — with timestamp and quantitative impact, grouped by change set. Approval routing ### Material changes wait for a human. Changes above the thresholds you set route to named approvers before anything reaches committee. SOX · IFRS ### Enterprise audit trail Built for the auditor's questions. Every action, AI or human — immutable, attributed, timestamped, and exportable on request. Version control ### Every version, with the why. Each AI-produced version retained and one-click restore. ## The full workflow From Claude prompt to controller sign-off in one governed flow. Fast because of Claude. Trustworthy because of Rockhopper. Claude · Rockhopper · Human reviewer 1. Step 1 · Claude ### Claude executes the instruction Prompt: update the revenue model from the Q4 memo, revise EBITDA, and check covenant headroom against the credit-agreement terms in the Debt tab. Claude applies the changes across the pricing, volume, EBITDA, and debt tabs. FY26\_Revenue\_Model.xlsx updated · 47 cells across 4 tabs 2. Step 2 · Rockhopper ### Rockhopper captures and classifies Every changed cell is logged by type — structural or input — with quantitative impact and a reviewer-ready summary. 47 changes · 15 structural · 32 input · EBITDA −$11.4M · net leverage 3.1x → 3.4x (covenant 3.5x) 3. Step 3 · Rockhopper ### Rockhopper surfaces what to review Rockhopper highlights the changes worth a look — structural edits, material impacts, and the covenant flag — then offers routing options. The preparer chooses to send the review to their manager by email via MCP, with the spreadsheet and full change context attached. Routed via MCP · email to controller with spreadsheet + change context attached 4. Step 4 · Human reviewer ### Controller reviews and approves The controller opens the spreadsheet, reads the comments the preparer left, reviews the context behind each change, and approves the version. Version approved by controller · preparer comments and change context retained 5. Step 5 · Rockhopper ### Version locked, audit complete The approved version is locked, an immutable snapshot is created, and the full agent + human decision trail is stored. v6.2 locked · audit snapshot exported · distribution cleared ## Claude + Rockhopper walkthrough See the complementary stack in action with native playback and analytics tracking. ## Rockhopper's role in the Claude Excel stack Six conditions that make AI deployment possible in enterprise finance. 01 — Observability ### See everything agent touched Cell-level visibility into what changed, by how much, and what it means before human sign-off. Cell diff Impact calc Agent attribution 02 — Trust ### Human control at thresholds Materiality gates and approval workflows apply to every contributor, including agents. SOX controls Approval gates Distribution locks 03 — Reversion ### Undo agent actions instantly Every version retained indefinitely with one-click rollback and context of what is being restored. Version history One-click revert Forever retained 04 — Collaboration ### Faster human review Review concise change narrative and thread questions directly where agent edits occurred. Change summary @mentions Threaded review 05 — Governance ### Enterprise-grade audit trail Immutable logs combine every agent action and human decision into export-ready evidence. Immutable log IFRS · SOX Auditor export 06 — Source of truth ### One version everyone trusts Version pinning and context-aware sync keep controllers, FP&A, and leadership on same state. Version pinning Live sync Source of truth ## Where Claude stops, Rockhopper starts. Claude is exceptional at intelligence. Intelligence is not governance. Rockhopper is the control system around every spreadsheet an AI touches. Claude · Cell-level citations Explains every calculation with citations to the exact cells. Rockhopper adds Cell-level attribution of every model change, materiality logic, and SOX-grade approval trails. Claude · Review before apply Highlights and explains each edit; nothing is saved until you approve. Rockhopper adds Permanent version history, one-click restore to any point in time, and full rollback context. Claude · Reusable skills Save a workflow once; the team runs it as a one-click skill. Rockhopper adds Governance over those skills — approved versions only, inherited controls, and version lineage. Claude · Enterprise deployment Runs inside your compliance setup via Bedrock, Vertex AI, or Foundry. Rockhopper adds Workflow governance: segregation of duties, thresholds, approval routing, and sign-off logging. ## What's here. What's next. Build schedule with live capabilities and near-term roadmap. Live now ### Cell-level change tracking for Excel Every human and agent edit attributed with materiality context and complete retention. Live now ### Version control with automatic context Each save includes structured summary and supports one-click rollback. Live now ### 360 collaboration hub Threaded comments, versioned discussion, and @mentions anchored to model context. Coming soon ### Claude action capture and review routing Automatic logging and policy-based routing for Claude-generated material changes. Coming soon ### SOX control layer for AI agents Segregation of duties, approval gates, and distribution locks for agent outputs. Coming soon ### AI error detection and linting Scan for formula errors, hardcoded values, broken links, and outlier behavior before review. Coming soon ### Prompt and source lineage Trace any changed cell back to the exact prompt that produced it — and open the source data the agent used, in one click. Future ### Multi-agent orchestration observability Track which agent made which contribution and route right slices for human review. Future ### Automated tie-out against source docs Cross-check model outputs against ERP exports and source docs with explained variances. “The future of audit is a collaboration between agents and humans — two separate species working together. The tools they use must welcome both equally.” Sebastian Perez Lawrence Cofounder & CEO Rockhopper Inc. # AI your CFO will actually trust. Claude + Rockhopper. Claude brings intelligence. Rockhopper brings accountability.