What is a Role Brain?

A Role Brain is a persistent decision-pattern repository that captures the tacit knowledge and instincts of key personnel. When an executive departs, their Role Brain remains as a corporate asset, allowing a successor to operate at full capacity from Day 1.

How does StackFast differ from standard RAG implementations?

Standard RAG retrieves text without understanding context. StackFast provides a reasoning layer that applies judgment through structured logic, builds persistent Role Brains that compound over time, and enforces knowledge sovereignty through a 3-layer governance gate.

What is Knowledge Sovereignty?

Knowledge Sovereignty means your organization's intelligence never leaks into third-party training sets. Every brain entry is tagged for compliance and M&A readiness, with audit trails generated automatically for EU AI Act, SOC2, and HIPAA compliance.

How does StackFast reduce Key-Person Risk?

StackFast captures executive decision patterns, client relationship nuances, and institutional knowledge into structured Role Brains. When key personnel leave, their judgment and instincts remain as a corporate asset, reducing onboarding time for replacements and preserving institutional intelligence.

Back to Catalog

agent

ExecuTwin / Digital Twin

ExecuTwin is the StackFast digital executive twin layer for preserving judgment, role context, and executive decision patterns.

Host and data posture

Where this product is meant to live.

Digital-twin orchestration should stay assisted/private until approval boundaries are proven.

Commercial shape

Operator-console system

Data posture

Tenant brain required

Approval posture

Operator action

Best demo

StackFast UI

Best daily use

StackFast UIHermes

Who it is for

Executives, founders, advisors, and enterprises that need judgment captured into a durable operating asset.

Problem it solves

It reduces key-person risk and makes executive judgment transferable.

Activation model

Custom scope with safety, namespace, and data review.

Proof and source paths

Fractional CEO page exists
ExecuTwin and digital twin APIs exist
Twin provision APIs exist

Repo evidence

app/fractional-ceo/page.tsx
app/api/executwin
app/api/digital-twin
app/api/twin

Capabilities

role brain capture

digital_twin

Capture executive judgment into a role brain.

Agent use
Digital twin and role brain capture service.

Connector proof

Catalog is not the same as customer-ready.

This product only becomes market-ready after a real host mounts the entitled tools, a safe call succeeds, metering records the event, and a customer-safe receipt exists. Until then, the page shows the strongest proven status without rounding up.

Catalog

Runtime registry is not published yet.

Entitlement

Entitlement boundary is not declared.

Callable

Callable tool proof is incomplete.

Metering

Metering waits on callable execution.

Customer validated

Pending fresh host-surface call receipt.

Install and activate

Connect this product through the StackFast MCP endpoint. Discovery metadata is public; execution uses OAuth and storefront entitlement checks.

MCP URL

https://stackfast.ai/api/mcp

Agent subscription

This product remains request-scope until its checkout, fulfillment, and public-name gates are complete.

Client snippets

ChatGPT

Add StackFast as a custom MCP connector, then approve OAuth when prompted.

Claude

Connect a remote MCP server using the StackFast MCP URL and a tenant-scoped token or OAuth flow.

Cursor

Grok

Add StackFast as a custom MCP connector using the StackFast MCP URL and customer entitlement auth.

Product: ExecuTwin / Digital Twin
Product API: https://stackfast.ai/api/store/products/executwin
Pricing API: https://stackfast.ai/api/store/pricing/executwin
Manifest API: https://stackfast.ai/api/store/manifests/executwin
MCP URL: https://stackfast.ai/api/mcp
Auth: oauth_reader_or_storefront_entitlement
Checkout session API: https://stackfast.ai/api/store/checkout/session
Plans:
- Twin scope: Request scope; checkout_ready=false; checkout_url=request_scope
Agent activation:
- Read this product manifest and pricing API.
- If a plan has checkout_ready=true, open its checkout_url or POST product_slug, plan_slug, and customer_email to the checkout session API.
- After Stripe payment, the signed webhook grants storefront_entitlements for the buyer email/account.
- Connect the LLM client to the MCP URL and approve OAuth so tools/list reflects the licensed reader surface.
- Call only tools exposed for that entitlement; unentitled execution must fail closed.

Agent-readable queries

build a digital executive twinAI executive brainrole brain for key person risk