Fixture

Provides focused developer tools that test whether test suites catch real bugs and track tasks between developers and AI coding agents. Sells to software developers and engineering teams in businesses building agent-driven software projects. Differentiates as local-first, agent-native tools that run entirely on local hardware with structured, token-efficient output, offered as a commercial evaluation and an open-source option.

Key features

• Mutation testing with realistic bugs
• Identifies surviving mutants as blind spots
• Provides agent-ready fix context
• Markdown-native task tracking
• SQLite-backed fast task lists
• Linted dependency-aware task management
• Token-efficient agent context
• Local-first execution on hardware
• Structured machine-readable errors