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Swimm

Agentic modernization, delivered

About Swimm

Swimm provides a service that modernizes legacy systems by grounding the codebase in a verified map and building a new application on top of that map. It focuses on enabling internal teams to continue building with agents or traditional tools, while maintaining alignment with the existing system. The approach emphasizes determinism and verification, rather than relying solely on generic AI tools to interpret code.

The process starts with a grounding sample on a subset of code, then expands to the full system with continuous synchronization and verification. A team of experts and coding agents work together through a defined sequence, ensuring that every rule and flow is linked back to the source code and remains up to date as changes occur.

After the project, the grounding layer remains in the Swimm platform, preserving the verified map of rules, flows, and dependencies. Engineers can search and trace flows to the corresponding lines of code, while analysts read business rules in plain English and confirm terms known to their domain. Leaders view coverage and progress as work proceeds.

Swimm positions its offering as a service company that delivers agentic modernization, powered by an engine that maps code and a team of experts. The goal is to produce a maintainable, auditable map of the system that supports ongoing development and governance, including the use of coding agents and integration with existing tools.

Use cases

  • Launch modernization projects grounded in a verified map of legacy systems
  • Prepare systems for agentic development with coding agents

Key features

  • Grounding layer provides a complete, verified map of the system
  • 100% coverage on supported stacks
  • AI Operability readiness for agent-based development
  • Security and deployment options including air-gapped environments
  • Stays current through patented updates

Pros and cons

Pros

Provides a verified map and grounding layer that stays in sync with code
Enables agented development with guardrails and ecosystem integration

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Frequently asked questions

What does Swimm do?
Swimm delivers agentic modernization as a service. We build and deliver the new application your business needs, grounded in a verified understanding of what your legacy system does, rule by rule.
What is the grounding layer?
A complete, verified map of what your system does: its structure and dependencies, indexed straight from the code, and its business rules and behaviour, explained and checked by our experts.
Which languages and stacks do you cover?
Mainframe and legacy languages such as COBOL, JCL and PL/I, and modern stacks such as Java and .NET.
How do we start?
With a scoping call, then a grounding sample: in one week we build the grounding layer on a sample of your code, so you see what we can do on your own system.
What happens after the project?
The new code, the specs and the verified map of your system, live in the Swimm platform for your people and your agents.

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