CelScale
§ Preview · invite only

Liberate your financial models. Run scenarios. Connect agents.

CelScale turns complex Excel financial models into pure functions. Drive scenarios, parameter sweeps, and sensitivity analysis from the browser, a script, or an AI agent, with cell-level traceability on every run.

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§ 01 — Liberate

Your workbook, now a pure function.

Upload an .xlsx. CelScale reads your formulas and returns a clean, callable model. Inputs in, outputs out, with every intermediate cell addressable and auditable.

  • 120+ Excel functions

    Finance-first coverage: NPV, IRR, XNPV, XIRR, MIRR, PMT, PV, FV, RATE, XLOOKUP, SUMIFS, and more.

  • Iterative calculations

    Circular references converge with configurable thresholds. Interest-on-cash, tax feedback loops, and solver-style models just work.

  • Cell-level traceability

    Follow any output back to its precedents and audit its inputs.

  • Formula explain

    Plain-language breakdown of what a cell computes and why.

§ 02 — Run

Scenarios, sweeps, and sensitivities.

Override inputs, run named scenarios, and sweep assumptions across ranges. Fan out a whole portfolio, fund, or cohort in one shot. Stop fiddling with one workbook at a time.

  • Named scenarios

    Base, upside, downside, stress. Share by link, not by email.

  • Parameter sweeps

    Step discount rates, growth, or FX across a grid in one run.

  • Sensitivity analysis

    Rank drivers of NPV, IRR, or any target output by impact.

  • Portfolio parallelism

    Run up to 25 complex models in parallel for book-wide or fund-wide calculations.

§ 03 — Connect

A model your team and agents share.

Invite teammates with role-based access: owner, admin, member, viewer. Then open the same model to Claude, ChatGPT, and other AI agents so they can query and evaluate your numbers directly, under the same roles.

  • Teams & access control

    Four roles: owner, admin, member, viewer. Enforced everywhere. Auditable.

  • Ready for AI agents

    Connect Claude, ChatGPT, or any agent with one sign-on.

  • Scripting interface

    Drive models from a Python script or a notebook.

  • Audit trail

    Every evaluation, scenario, and user action is versioned and logged.

§ For AI agents

Let your favorite LLM run the sweep.

Connect Claude or ChatGPT with one sign-on. Agents can list projects, describe models, evaluate scenarios, trace cells, and run sensitivity analysis, subject to the same team roles a human has.

Connect an LLM →

Share the math, not the model file.

CelScale is in preview, by invitation. Tell us about your use case to get access.

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