Generating each page straight from an LLM has two problems: you pay per text, and the outputs converge — same prompt, same shapes, near-identical pages. Spintax inverts it. The model drafts one richly varied template; the engine then expands it into thousands of variants locally, deterministically, for free. Every variation is one you defined, so quality doesn't drift across page 400. An editor reviews one template instead of proofreading a thousand texts. It's a real language, not flat {a|b|c}: permutations that pick and order a subset, scoped variables, value-driven conditionals, locale-aware plurals, includes. Five independent MIT engines — JS, PHP, Python, Object Pascal, .NET — held to one shared corpus of golden fixtures, so a template renders identically on all of them. Nothing calls a service of mine; every render happens in your runtime. Playground runs in the browser, no install. There's also an MCP server if you want agents to validate and render templates, and a native Windows editor.

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p/spintax

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2mo ago

Spintax has a reputation problem, and it's mostly deserved

The word comes from 2000s SEO, where it meant swapping synonyms until a text was unrecognisable to a filter and to a human. Fair enough that was garbage.
The thing itself is just a template language: alternatives, orderings, conditionals, plurals. Same category as ICU MessageFormat, only aimed at producing many variants instead of one localized string. Cold email, product feeds, multi-locale landings.

So: is the term salvageable, or should this have been called something else from day one? I'm genuinely unsure, and I've already shipped under the name.

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Spintax

The content template language, with five open engines

The content template language, with five open engines

Forum Threads

Spintax has a reputation problem, and it's mostly deserved

Forum Threads

Spintax has a reputation problem, and it's mostly deserved