Use cases

What you can do with Mutagent

Six use cases across the agent lifecycle, from spec to production. Diagnostics runs free in your coding agent today. Pick a use case to see what it does, what it needs, and what you get back.

01 · Build · Spec Agent

Turn an idea into a signed spec

Define the agent, its architecture, and its eval criteria before any code is written.

✓A signed agentspec.yaml: a framework-agnostic contract with system prompt, LLM config, tools, I/O boundaries, and human-in-the-loop gates
✓A design sidecar carrying the problem, goal, scope, business KPI, failure modes, and the eval rubric
✓A recommended architecture with the agent type locked in

See use case

01 · Build · Build Agent

Ship a running agent from the spec

Scaffold the code, map your prompts and traces, and wire telemetry into your stack.

✓A working, traced agent as real code on your framework, tests green
✓A functional and regression test suite covering the spec's schema and semantics
✓A faithfulness review report enumerating every spec capability with its trace evidence

See use case

02 · Evaluate & test · Evaluator Agent

Score every change with a calibrated judge

Build evals and a judge that matches your team's definition of quality, so every change is measured.

✓A calibrated judge pinned to your quality labels, reproducible run to run
✓A severity-gated scorecard with a fail, incomplete, or pass verdict per behavior
✓Per-behavior criteria and deterministic code checks mined from your failure traces