Dev Traffic Control Source on GitHub
Version 0.22.0 · macOS

Answer your coding agents with clicks, not chat

Your agent writes a request as a Markdown file: a few things to try in the build it just made, or a design with decisions to take. Dev Traffic Control shows it, you answer with clicks, and the agent reads your answers from a file beside the request.

Download for Mac Connect your agents

Apple Silicon, macOS 12 or later. Signed and notarised. Free and open source (MIT).

What it does

For developers who already work with coding agents such as Claude Code or Codex. Every picture below is from an example project.

Check what the agent built

A check request lists a few things to try, one line each. Mark each one works or not, add a comment, paste a screenshot.

The agent gets a verdict and your words for every check, not a paragraph in chat.

A check request for a drawing app: one check marked as a problem with a comment and a marked-up screenshot, the others waiting.

Decide from the pictures

A design review puts each option's picture side by side, with a button under each. Enlarge one, step through them, or open all of them in a compare view.

The rail shows how many decisions are left, so none gets missed.

A design review asking where the drawing tools should sit, with three option pictures side by side and a Choose button under each.

Point at the problem

Draw arrows, boxes and labels on a screenshot or a review picture. The words sit on the picture, or in a numbered list if you prefer.

The agent receives each mark as words and coordinates, so it knows what you pointed at without reading pixels.

The mark-up view: an arrow labelled 'Jumps from 12 to 40 here' pointing at a slider, a labelled box and a text label on a screenshot.

Connect your agents

Three steps, once, and an optional fourth: the Claude Code mod, described below. After that your agents file requests in your records folder.

  1. Install the dev-traffic-control skill

    It teaches your agent the request format. Any agent that reads skills can use it: techczech/dominiks-agent-skills › dev/dev-traffic-control.

    git clone https://github.com/techczech/dominiks-agent-skills
cp -R dominiks-agent-skills/dev/dev-traffic-control <your agent's skills folder>

    Or unzip dev-traffic-control-skill.zip from the release into your agent's skills folder.

  2. Tell your agent where to write

    Paste this to your agent once.

    Use the dev-traffic-control skill. My records folder is ~/Documents/Dev Traffic Control. When you want me to test or review something, file it there and give me the dtc:// link.

  3. Or look around first

    The example project holds one check request, one design review and one handoff, so you can see what your agents will send.

Download for Mac

The agent skill and the Claude Code mod

Two companions to the app. Optional beyond the skill.

  1. The skill

    The dev-traffic-control skill teaches any agent the record format. It is attached to each release as dev-traffic-control-skill.zip and lives at techczech/dominiks-agent-skills › dev/dev-traffic-control. Unzip it into your agent's skills folder, or use the clone commands above.

  2. The Claude Code mod

    The dtc-inbox mod adds a /dtc pane and a band that show answers waiting for the agent, and a dtc_answers tool that returns them to the agent as delimited data. It never acts by itself: it submits no prompt, and the agent reads an answer when you ask it to or when it calls the tool. Automatic delivery to the filing session is planned for a later release. It needs Claude Code with mods support.

    claude plugin marketplace add techczech/dev-traffic-control
claude plugin install dtc-inbox@dev-traffic-control

    It is also attached to each release as dtc-inbox-mod.zip. Its README is claude-mod/dtc-inbox/README.md.