Know exactly what to fix before your first investor meeting.
Every venture is built on assumptions — the ones you tested are strengths, the ones you didn't are risks. Run the MVE — 5 modules, ~35 minutes — and find out which is which.
Run a studio or invest? Apply as a studioApply as an investor
Everyventureisbuiltonassumptions.Theonesyoutestedarestrengths.Theonesyoudidn'tarerisks—andyoudon'tknowwhichiswhichuntilsomethingbreaks.
Founders fly blind.
The risk isn't uncertainty itself — it's the uncertainty you never named. SVIE OS walks you through 50 structured decision gates, so you find the gaps before they break the business, not after.
Evaluators judge on charm.
Studios and funds make cohort decisions based on who pitches best, not who validates best. Castalia delivers objective, standardised scored reports on every applicant — the same framework, every time.
Capital misallocates.
Investors see the ventures that pitch loudest, not the ones that fit their thesis. Castalia's ecosystem pool surfaces deals you haven't been pitched yet — filtered by stage, sector, evidence quality, and investor profile.
When an investor finds an unvalidated assumption, they see risk. When you find it first, you see a decision you get to make on your own terms.
We're not preparing your venture for investors. We're helping you build a venture that would survive their scrutiny — because that's the same venture that survives your actual market. Whether the investor ever shows up or not, you're building on solid ground either way.
Strategic Venture Intelligence & Evaluation Operating System (SVIE OS).
Not a framework you read.
A system you run on.
The SVIE OS is structured across 9 phases — from founder self-assessment through problem validation, market sizing, business model design, regulatory compliance, and investor readiness.
Built for African market realities — informal economies, mobile-first infrastructure, and the specific challenges of building at the frontier.
9 Phases
From founder self-assessment to investor readiness — a full lifecycle evaluation sequence with clear milestones.
Decision Gates
Go · Conditional Go · Pause · No-Go — every module ends with a structured outcome, not an opinion.
African Context
Kenya, Nigeria, Ghana, East Africa — 47-county regulatory variance, MPESA-native finance, and frontier-market dynamics built in.
Evidence Hierarchy
Level 1 (opinion) through Level 5 (audited data) — every answer is quality-rated, not just recorded.
Not a framework you read. A system you run on.
Structured across 9 phases, built for African market realities.
9 Phases
From founder self-assessment to investor readiness — a full lifecycle evaluation sequence with clear milestones.
Decision Gates
Go · Conditional Go · Pause · No-Go — every module ends with a structured outcome, not an opinion.
African Context
Kenya, Nigeria, Ghana, East Africa — 47-county regulatory variance, MPESA-native finance, and frontier-market dynamics built in.
Evidence Hierarchy
Level 1 (opinion) through Level 5 (audited data) — every answer is quality-rated, not just recorded.
Rigorous enough to trust.
Simple enough to run.
SVIE OS is not a questionnaire. It is a structured intelligence layer — built module by module to surface what matters, when it matters, for every actor in the ecosystem.
the global evaluation standards every module is built on
covering every critical dimension of venture viability
from idea to investor-ready, in sequence
MVE, Screening, Readiness, and Investor Due Diligence
Four tracks, one
framework.
Start with theMVE Track
Run the five-module Minimum Viable Evaluation. Receive a scored report, confidence rating, and action plan built on the same evidence hierarchy used by institutional investors. Designed for solo founders under GES-14 Minimum Viable Governance. Includes mandatory Ecosystem Role Mapping (GES-19) and Sector Readiness check (GES-17).
Start evaluation →Diagnose YourReadiness Gaps
A comprehensive, self-directed diagnostic covering all nine phases with no minimum evidence threshold. Get a frank readiness assessment identifying your strongest evidence, your gaps, and what to fix before approaching investors. Multi-session — save and resume at any point.
Start evaluation →Standardise YourSelection Process
Screen entire cohorts on a 13-module evaluation spanning founder, market, business model, and early financial signal. Ventures reaching Conditional Go or better advance to full evaluation. Module 8.6 (Portfolio Intelligence Framework) unlocks at three or more ventures, turning your evaluation pool into a proprietary benchmark.
Start evaluation →Due DiligenceBuilt on Evidence
A targeted 29-module evaluation. Financial Evaluation Sprint (Phase 6) and Integrated Decision Framework (Phase 8) must reach minimum Level 3 evidence for a Go recommendation. Includes the Evidence Stage Profile across all six investment variables. GES-17 Sector Readiness and GES-19 Signal Interpretation audits are included in the final investment memo.
Start evaluation →Start with theMVE Track
Run the five-module Minimum Viable Evaluation. Receive a scored report, confidence rating, and action plan built on the same evidence hierarchy used by institutional investors. Designed for solo founders under GES-14 Minimum Viable Governance. Includes mandatory Ecosystem Role Mapping (GES-19) and Sector Readiness check (GES-17).
Start evaluation →Diagnose YourReadiness Gaps
A comprehensive, self-directed diagnostic covering all nine phases with no minimum evidence threshold. Get a frank readiness assessment identifying your strongest evidence, your gaps, and what to fix before approaching investors. Multi-session — save and resume at any point.
Start evaluation →Standardise YourSelection Process
Screen entire cohorts on a 13-module evaluation spanning founder, market, business model, and early financial signal. Ventures reaching Conditional Go or better advance to full evaluation. Module 8.6 (Portfolio Intelligence Framework) unlocks at three or more ventures, turning your evaluation pool into a proprietary benchmark.
Start evaluation →Due DiligenceBuilt on Evidence
A targeted 29-module evaluation. Financial Evaluation Sprint (Phase 6) and Integrated Decision Framework (Phase 8) must reach minimum Level 3 evidence for a Go recommendation. Includes the Evidence Stage Profile across all six investment variables. GES-17 Sector Readiness and GES-19 Signal Interpretation audits are included in the final investment memo.
Start evaluation →Your evaluation becomes your toolkit.
Every module you complete can generate a working tool grounded in your own results — not a generic template. Answer honestly, and the interview script, the pitch deck outline, the GTM plan all come back specific to what you actually told us.
A structured discovery-interview script for validating your problem or customer assumptions.
A worksheet to define and stress-test how this venture actually makes money.
A lightweight 12-month projection structure sized to your stage — not a generic spreadsheet template.
A one-page go-to-market plan structure covering channel, message, and first-90-days actions.
A slide-by-slide outline tailored to this venture's actual gaps and strengths.
A section-by-section business plan structure scoped to what this venture actually needs to prove.
A structured matrix for mapping direct and indirect competitors against this venture.
The specific formulas and inputs this venture needs to know its CAC, LTV, and payback period.
Don't take our word for it.
Answer two questions about your venture. We'll run a live Decision Gate evaluation right here — no account needed.
Be concrete — describe the friction, the pain, the cost of the problem as it exists today.
One evaluation, three vantage points.
Every venture is built on assumptions. The ones you tested are strengths. The ones you didn't are risks — and you don't know which is which until something breaks.
Building a venture means making hundreds of decisions on incomplete information — that's not a flaw in how you work, it's the nature of the thing. SVIE OS doesn't predict the future. It finds the gaps: the question you didn't think to ask, the assumption you built three decisions on top of without ever checking it was true. Naming what you're uncertain about is how you stop being blindsided by it.
Start your evaluation →How sure are you that your shortlist is your strongest ventures — not just your best-written decks?
A pitch deck measures how well someone can pitch, not whether the market is real or the model survives contact with unit economics. Castalia screens every applicant on the same modules, the same evidence standards, the same scoring — so your shortlist reflects what's actually true, not who wrote the best narrative. A cohort process that used to take two to three months compresses to weeks.
Apply as a studio →Find deals that match your exact thesis — sector, stage, evidence quality — with less friction than any sourcing channel you're using today.
Most sourcing channels can't tell the difference between "risky because unvalidated" and "risky because genuinely fragile." Castalia can. Every venture in the discovery pool has been evaluated against the same evidence standards, with the same fatal-flaw checks applied — most early-stage bets don't return capital, and Castalia doesn't change those odds, but it changes what you know before you decide.
Apply as an investor →Built on evidence. Trusted by builders.
Founders, programme managers, and investors across East Africa who have run the SVIE OS framework on their ventures and cohorts.
“For the first time I had a clear picture of exactly what gaps my venture had before going to any investor. The decision gate framework forced me to answer questions I had been avoiding.”
Build the right thing, the right way.
The Minimum Viable Evaluation covers 5 modules, takes ~20–35 minutes, and identifies the risks that kill most ventures before they scale. Free during beta.