# Corefoundry

*/Startups/Corefoundry*

## Startup Overview

This infrastructure maps legacy mainframe ledgers directly into modern programmable endpoints. Rather than replacing decades-old banking systems, the software translates existing transactional data and exposes it as real-time APIs. Financial institutions build modern digital applications on top of their original ledgers without altering the underlying mainframe code.

Traditional banks and credit unions face immense technical debt and operational risk when attempting to modernize their core systems. Multi-year migrations to new platforms often disrupt operations and threaten data integrity. This solution eliminates the need for core replacement by establishing a zero-migration overlay. Development teams launch new financial products and mobile interfaces using the overlay, completely bypassing the bottleneck of legacy constraints.

While cloud-native alternatives like Mambu and Thought Machine force complete system replacements, and custom middleware introduces compliance gaps, this approach operates entirely in-place. It provides a zero-migration architecture that leaves the primary ledger untouched while generating programmable endpoints. The resulting infrastructure remains fully compliant with banking-grade auditability, ensuring that rapid product development never compromises strict regulatory standards.

## Startup Founding Hypothesis

**Approach**: that maps legacy mainframe ledgers into modern programmable endpoints
**Competitors**:
- [Mambu](/Competitors/Mambu)
- [Thought Machine](/Competitors/Thought_Machine)
- [custom middleware](/Competitors/custom_middleware)
**Differentiator2x2**: a zero-migration overlay and fully compliant with banking-grade auditability

## Startup Solution Coordinate

**Solution**: [Ledger Overlay Engine](/Software/Ledger_Overlay_Engine)

## Startup Position2x2

```mermaid
quadrantChart
  title Core Banking Modernization
  x-axis Requires Full Migration --> Zero-Migration Overlay
  y-axis Basic Compliance --> Banking-Grade Auditability
  quadrant-1 Plug & Play Secure
  quadrant-2 Secure & High Friction
  quadrant-3 High Friction & Brittle
  quadrant-4 Low Friction & Brittle
  Mambu: [0.15, 0.85]
  Thought Machine: [0.10, 0.95]
  Custom Middleware: [0.85, 0.30]
  Corefoundry: [0.90, 0.85]
```

## Startup Offer

**Proof**:
- Targeting regional banks aiming to launch modern mobile experiences without migrating off AS/400 systems.
- Designed to map standard retail banking schemas and expose RESTful endpoints within 14 days of deployment.
- Aiming for sub-50ms latency overhead on legacy ledger read and write operations.
- Targeting zero data loss during high-volume ledger syncing events.
**Tiers**:
- Name: Sandbox Environment · Price: ~$1,000–$2,500/mo · Inclusions: Access to mapping endpoints for testing against mocked mainframe environments, automated schema generation, and up to 5 developer seats.
- Name: Production Overlay · Price: ~$8,000–$15,000/mo · Inclusions: Live read/write API endpoints mapped to a single legacy core, banking-grade audit logging, intelligent read caching, and up to 5 million API calls per month.
- Name: Enterprise Core · Price: ~$80k–$120k/yr · Inclusions: Multi-core mapping, dedicated VPC deployment configuration, unlimited API calls, and customized ISO 20022 compliance reporting.
**Guarantee**: If the API endpoints fail to maintain 99.99% availability or introduce data inconsistencies with the underlying ledger during sync operations, Corefoundry will refund the month's service fee and cover the cost of the subsequent compliance audit.
**Business Function**: ProvideService
**Objection Handlers**:
- Objection: Reading directly from the mainframe will spike our MIPS computing costs. Rebuttal: Corefoundry is designed to cache reads intelligently and batch writes, specifically minimizing expensive direct mainframe queries.
- Objection: Our compliance team will not approve a cloud middleware touching the system of record. Rebuttal: The overlay is designed for dedicated VPC deployment, ensuring ledger data never leaves your institution's controlled environment.
- Objection: We are already planning a multi-year migration to Thought Machine. Rebuttal: Corefoundry extends the life of your current core, letting you build modern features today while executing a phased, lower-risk migration in the background.
- Objection: Our legacy system schemas are completely undocumented and heavily customized. Rebuttal: The platform uses automated schema discovery tools intended to map customized AS/400 or z/OS fields into standard formats automatically.
**Pricing Architecture**: Tiered

## Startup Brand

**Voice**: Authoritative institutional register distinguished by precise engineering exactitude.
**Tagline**: Modern API endpoints for legacy banking mainframe ledgers.
**Icon Concept**: ledger
**Palette Intent**: institutional-cool
**Visual Identity**: Deep navy and slate tones combine with monospaced typography and stark mainframe-cabinet grid motifs to project absolute banking-grade precision.
**Archetype Reference**: the-ruler

## Startup Buyer Chain

**Chain**: B2B → Core Banking Enterprise Architects → Digital Product Teams
**Gtm Motion**: Direct enterprise sales targets bank CIOs seeking modernization without core migration risk, acquiring initial adoption through a single read-only retail banking product line. Expansion occurs by upselling bidirectional write capabilities and extending API coverage to subsequent business units like commercial lending.
**Agent Channel**: Intends to publish its banking overlay OpenAPI specifications to AI framework tool registries like LangChain and the OpenAI directory, enabling financial reasoning agents to dynamically discover and query legacy ledger balances.
**Primary Channel**: Co-selling with financial system integrators like IBM Consulting and Capgemini when enterprise architects explicitly scope legacy modernization and digital transformation mandates.

## Startup Customer Journey

```mermaid
flowchart LR; A[System Integrator Partner] --> B[Sandbox Environment]; B --> C[Read-Only Retail Endpoint]; C --> D[Production VPC Overlay]; D --> E[Bidirectional Write API]; E --> F[Commercial Lending Unit]; F --> G[Multi-Core Reference Architecture];
```

## Startup Proof Points

_Illustrative — target and order-of-magnitude estimate figures, not an achieved track record (this Thing is concept-stage)._

**Pilot Goals**:
- A 30-day sandbox pilot connecting to a regional bank's mocked AS/400 environment, aiming to successfully auto-generate retail banking schemas and support up to 1 million API calls without latency spikes.
- A 60-day parallel staging deployment with a credit union's development team, aiming to prove 99.99% availability and zero data inconsistencies when syncing a prototype mobile app with the legacy ledger.
**Target Metrics**:
- Target: 14-day turnaround from legacy schema discovery to fully mapped RESTful API endpoints
- Target: Sub-50ms latency overhead on legacy ledger read and write operations
- Target: Zero data loss and complete consistency during high-volume ledger syncing events
- Aim: 30% reduction in MIPS computing costs through intelligent read caching
**Target Case Studies**:
- A regional bank seeking to launch a modern mobile banking experience without migrating off their legacy AS/400 system, demonstrating the ability to expose secure RESTful endpoints within 14 days of deployment.
- A mid-sized credit union burdened by escalating mainframe computing costs, proving that the platform's intelligent read caching and batch writing drastically reduce expensive direct MIPS queries.
- A tier-two financial institution undergoing a multi-year migration to a modern core, illustrating how the API overlay maintains uninterrupted digital services and allows new feature development during the transition.
**Testimonial Targets**:
- A VP of Digital Banking expressing relief at launching a competitive mobile app seamlessly without waiting for a risky multi-year core replacement.
- A Chief Information Security Officer validating that the dedicated VPC deployment satisfied all regulatory audits by keeping ledger data entirely within their controlled environment.
- A Lead Integration Engineer praising the automated schema discovery tools for instantly making sense of their heavily customized and undocumented z/OS fields.

## Startup Top Risks

**Risks**:
- Severity: existential · Description: Legacy core banking vendors actively block or rate-limit the overlay's access to their mainframe environments. · Mitigation Status: unmitigated
- Severity: high · Description: A security vulnerability in the translation layer exposes raw ledger data and triggers a severe compliance breach. · Mitigation Status: in-progress
- Severity: moderate · Description: Bank procurement teams classify the zero-migration overlay as high-risk shadow IT, extending sales cycles beyond current runway limits. · Mitigation Status: unmitigated

## Startup Competitors

- [Mambu](/Competitors/Mambu) — Cloud Core Platform
- [Thought Machine](/Competitors/Thought_Machine) — Cloud Core Platform
- [Custom Middleware](/Competitors/Custom_Middleware) — Status Quo
- [Temenos Transact](/Competitors/Temenos_Transact) — Legacy Incumbent
- [Fiserv Signature](/Competitors/Fiserv_Signature) — Legacy Incumbent

## Startup Solution Stack

- [Ledger Modernization Service](/Services/Ledger_Modernization_Service) — Service-as-Software
- [Compliance Audit Agent](/Agents/Compliance_Audit_Agent) — Agent
- [Schema Mapping Worker](/Agents/Schema_Mapping_Worker) — Agent
- [Zero-Migration Engine](/Software/Zero-Migration_Engine) — Software
- [Mainframe Integration API](/Software/Mainframe_Integration_API) — Software

## Startup Story Brand

**Hero**:
- **Need**: to be the innovator who modernizes the bank while preserving institutional stability
- **Want**: to launch modern mobile banking features without a multi-year mainframe migration
- **Identity**: the digital transformation lead at a regional bank
**Plan**:
- Step: Define schemas · Detail: Use automated discovery tools to map your customized mainframe fields into standard programmable formats.
- Step: Approve · Detail: Review the mapped endpoints in a secure sandbox to ensure perfect parity with your ledger data.
- Step: Launch endpoints · Detail: Deploy the production overlay to your VPC to power modern apps with live read/write access.
**Guide**:
- **Empathy**: You shouldn't still be manually mapping AS/400 fields. Thought Machine wasn't built to bridge the gap for institutions that can't risk a full core swap.
**Problem**:
- **Villain**: legacy ledger lock-in
- **External**: Launching a simple mobile app feature requires eighteen months of custom middleware development against undocumented AS/400 schemas.
- **Internal**: You feel paralyzed by the risk of breaking the core system of record.
- **Philosophical**: A bank's future growth deserves modern developer tools — not the burden of 40-year-old COBOL constraints.
**Success**: Modern mobile experiences go live in weeks, powered by stable, secure API endpoints that respect your existing system of record.
**One Liner**: Legacy ledger lock-in costs regional banks their competitive edge. Corefoundry maps mainframe ledgers into modern API endpoints so teams ship digital products in weeks.
**Positioning**:
- **So That**: launch modern mobile features without replacing the AS/400
- **Unlike**: multi-year core migration
- **For Whom**: digital transformation leads at regional banks
- **Category**: API overlay for legacy cores
**Call To Action**:
- **Direct**: Deploy Sandbox Environment
- **Transitional**: View API Documentation
**Failure Stakes**:
- losing market share to neo-banks
- skyrocketing MIPS computing costs
- failing compliance audits
**Transformation**:
- **To**: shipping modern digital products instead of managing core migration risks
- **From**: a frustrated lead managing expensive mainframe workarounds
**Controlling Idea**: Banking innovation should not require destroying the system of record.

## Startup Token Hero

**Genre**: founding-hypothesis
**Rendered**: Legacy ledger lock-in costs regional banks their competitive edge. Corefoundry maps mainframe ledgers into modern API endpoints so teams ship digital products in weeks.
**Mechanism**: spine-derived-v1
**Template Id**: spine-founding-hypothesis
**Vocab Fingerprint**: 948f9f290294bd7f

## Startup Token Positioning

**Genre**: moore-positioning
**Rendered**: API overlay for legacy cores for digital transformation leads at regional banks. Unlike multi-year core migration — launch modern mobile features without replacing the AS/400.
**Mechanism**: spine-derived-v1
**Template Id**: spine-moore-positioning
**Vocab Fingerprint**: 391f3689ea46b75e

## Startup Token Pitch Deck

**Genre**: pitch-deck
**Rendered**: Problem: Launching a simple mobile app feature requires eighteen months of custom middleware development against undocumented AS/400 schemas.
Solution: Legacy ledger lock-in costs regional banks their competitive edge. Corefoundry maps mainframe ledgers into modern API endpoints so teams ship digital products in weeks.
Customer: digital transformation leads at regional banks
Unlike: multi-year core migration
**Mechanism**: spine-derived-v1
**Template Id**: spine-pitch-deck
**Vocab Fingerprint**: cec75267cb0349b6

## Startup Token M E D D P I C C

**Pain**: Launching a simple mobile app feature requires eighteen months of custom middleware development against undocumented AS/400 schemas.
**Metrics**: Target: Modern mobile experiences go live in weeks, powered by stable, secure API endpoints that respect your existing system of record.
**Rendered**: Pain: Launching a simple mobile app feature requires eighteen months of custom middleware development against undocumented AS/400 schemas.
Economic buyer: Core Banking Enterprise Architects
Metrics: Target: Modern mobile experiences go live in weeks, powered by stable, secure API endpoints that respect your existing system of record.
Competition: multi-year core migration
**Mechanism**: spine-derived-v1
**Competition**: multi-year core migration
**Economic Buyer**: Core Banking Enterprise Architects
**Vocab Fingerprint**: f8767456cb194991

## Startup Token Cold Email

**Genre**: cold-email
**Rendered**: Subject: API overlay for legacy cores for digital transformation leads at regional banks

digital transformation leads at regional banks — Launching a simple mobile app feature requires eighteen months of custom middleware development against undocumented AS/400 schemas. Legacy ledger lock-in costs regional banks their competitive edge. Corefoundry maps mainframe ledgers into modern API endpoints so teams ship digital products in weeks.
**Mechanism**: spine-derived-v1
**Template Id**: spine-cold-email
**Vocab Fingerprint**: 83e38d8eb49187e2

## Startup Token Agent Spec

**Genre**: ai-agent-spec
**Rendered**: API overlay for legacy cores. Legacy ledger lock-in costs regional banks their competitive edge. Corefoundry maps mainframe ledgers into modern API endpoints so teams ship digital products in weeks. Serves digital transformation leads at regional banks.
**Mechanism**: spine-derived-v1
**Template Id**: spine-ai-agent-spec
**Vocab Fingerprint**: b26e5d44e96ebc7f

## Neighborhood

### Candidate solutions

- [DTC Brand Cannibalization](/Problems/DTC_Brand_Cannibalization) — candidate solution for · Problems
- [Dynamic Line Sheet Generation](/Problems/Dynamic_Line_Sheet_Generation) — candidate solution for · Problems

### Competitors

- [Mambu](/Competitors/Mambu) — competes with · Competitors
- [Fiserv Signature](/Competitors/Fiserv_Signature) — competes with · Competitors
- [Custom Middleware](/Competitors/Custom_Middleware) — competes with · Competitors
- [Thought Machine](/Competitors/Thought_Machine) — competes with · Competitors
- [Temenos Transact](/Competitors/Temenos_Transact) — competes with · Competitors

### What it offers

- [Ledger Overlay Engine](/Software/Ledger_Overlay_Engine) — offers · Software

### Embodies

- [Software](/Theses/Software) — embodies · Theses

### Composed of

- [Zero-Migration Engine](/Software/Zero-Migration_Engine) — composes · Software
- [Schema Mapping Worker](/Agents/Schema_Mapping_Worker) — composes · Agents
- [Ledger Modernization Service](/Services/Ledger_Modernization_Service) — composes · Services
- [Compliance Audit Agent](/Agents/Compliance_Audit_Agent) — composes · Agents
- [Mainframe Integration API](/Software/Mainframe_Integration_API) — composes · Software

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