Developer

Open source

Tools.

Each tool covers one step of the practice. Use them together, or bring your own.

Learn

How do we practice DevAX?

AX Practitioner skill

The playbook as an agent skill. Ask it questions, walk through the method, get coached through exercises, or have it review your eval against the checklist.

npx skills add microsoft/scope/docs/ax-playbook/ax-practitioner

Observe

What did the agent actually do?

atifact

Converts HAR files and Claude Code, Copilot CLI, Codex CLI, and Vally logs into ATIF trajectories, including subagents.

npm install -g atifact

ATIF Preview

A VS Code extension that shows a trajectory as a timeline: tool calls, reasoning, tokens and cost, subagents, and which skills were used.

code --install-extension waldek.atif-visualizer

Measure

How often does it get it right, and at what cost?

Scope

An open-source evaluation platform for agent experience. Scenarios, criteria, agent profiles, and gates, run where your developers work.

How to install Scope

Compare

Lift, drag, or expensive lift?

Scope readout preview

A VS Code extension that shows a Scope readout: lift and drag per profile, cost per run, and what to change first, with the trajectories behind each result.

code --install-extension waldek.scopeviz

Change without shipping

Will this fix work before we publish it?