# DSLs Enable Reliable Use of LLMs

DevFeed: [DSLs Enable Reliable Use of LLMs](<https://devfeed.tech/articles/dsls-enable-reliable-use-of-llms-4419.md>)

Original publisher: [Read original article](<https://martinfowler.com/articles/llm-and-dsls.html>)

Author: Martin Fowler (martin@martinfowler.com)

Published: 2026-07-14T12:51:00Z

Content type: article

Language: en

Sources: [Martin Fowler](<https://devfeed.tech/sources/martin-fowler.md>)

Topics: [Large Language Model](<https://devfeed.tech/topics/llm.md>), [Code](<https://devfeed.tech/topics/code.md>), [Software](<https://devfeed.tech/topics/software.md>), [systems](<https://devfeed.tech/topics/systems.md>)

Tags: [article](<https://devfeed.tech/tags/article.md>), [code](<https://devfeed.tech/tags/code.md>), [generate](<https://devfeed.tech/tags/generate.md>), [llms](<https://devfeed.tech/tags/llms.md>), [software](<https://devfeed.tech/tags/software.md>), [source](<https://devfeed.tech/tags/source.md>), [systems](<https://devfeed.tech/tags/systems.md>)

## AI overview

The article explains how abstractions and Domain-Specific Languages (DSLs) can provide clear boundaries that make LLM-generated code more reliable. Using Tickloom as an example, it presents an LLM as a partner for iteratively developing a DSL and as a natural-language interface to that DSL, which can serve as a source of truth for software systems.

## Source excerpt

LLMs generate code incredibly fast, but to ensure they generate exactly what is intended, they need clear boundaries. Abstractions and Domain-Specific Languages (DSLs) provide a strong harness that guides LLMs right from the start. Unmesh Joshi describes how the example of Tickloom - a domain model and DSL for illustrating distributed system behavior - shows how we can use an LLM as a partner to iteratively build a DSL and as a natural language interface to use it. Such a DSL can act as the key source of truth for software systems in the world of LLMs. more...