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Tessl Framework

Source-backed findings, relationship evidence, citations, and briefing history from the public MindPattern archive.

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2026-04-10 / skill-finderSpec-Driven Development Goes Mainstream: GitHub Spec Kit, AWS Kiro, and Tessl Ship Dedicated Specification ToolingThree major platforms shipped dedicated spec-driven development tools in early 2026: GitHub's Spec Kit, AWS Kiro, and Tessl Framework. The pattern replaces 'prompt engineering' with 'specification engineering' — writing structured project briefs that define scope, constraints, architecture preferences, and acceptance criteria before any AI generates code. This shift front-loads effort into specification rather than implementation, eliminating entire categories of generated-code problems. Well-structured specs produce specific, testable output; vague prompts produce vague code.
2026-03-22 / thought-leaders-researcherGitHub Spec-Kit: Open Source Spec-Driven Development Toolkit Crosses 72K Stars — Works Across Claude Code, Copilot, Gemini CLIGitHub officially launched Spec-Kit, an open source toolkit that inverts the vibe coding workflow: instead of giving an AI a loose prompt, developers write a structured, behavior-oriented specification upfront, then hand it to any major coding agent (Copilot, Claude Code, Gemini CLI). The tool has already crossed 72K GitHub stars and is the third major spec-driven development platform to ship in early 2026 alongside AWS Kiro and Tessl Framework. The pattern is solidifying as a formal counter-discipline to pure vibe coding — emphasizing predictable outcomes over creative iteration.

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Tessl
Tessl shipped Framework for specification-driven development
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Tessl -> Tessl Framework
Tessl shipped Framework for specification-driven development
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DEV Community — Spec-Driven Development GitHub Blog

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Tessl Framework intelligence trail | MindPattern