WHY was I SSH’ing into my laptop from my phone at parties?!

Either I had a feature idea I wanted an agent to build right then, or I was worried my agents were blocked waiting on my decision.

It dawned on me: humans are just another dependency in an agent workflow, so I turned myself into a tool-call.

I built an iOS app (Extendo) where agents can reach me to request approvals, choices, or plan reviews. They just use a CLI tool and skill. My phone buzzes. I answer in seconds. The agent gets back to work.

The key: the agent blocks until you respond, and receives your answer along with your verbal feedback.

What you can do from your phone:

- approvals and checklists - option buttons and rankings - markdown plan reviews (tap-hold individual paragraphs to add voice comments is so satisfying!) - kanban boards - voice responses - capture ideas on Apple Watch/Action Button and dispatch them to the right agent later

It’s a voice-first native iOS interface with push notifications. Push notifications are critical — the interaction needs to take seconds, not minutes.

``` extendo artifact create my_server implementation-choice \ --type multiple_choice \ --title "Where should we implement the rate limiter?" \ --option "backend:Backend API" \ --option "core:Core Library" \ --option "edge:Edge/CDN" \ --option "gateway:API Gateway" ```

If an agent can run bash, it can reach you.

I’ve been using it with Claude Code, OpenClaw, Pi, and custom scripts.

The backend protocol is open — you should self-host for tighter integration with your system (though there's a shared server available). There’s also an OpenClaw plugin and a Claude Code harness in the repo, a core library, and sample code to customize your own backend.

I used Extendo to build Extendo: design decisions, approvals, plan reviews, prioritization. Agents coded. I made decisions while walking the dog and between sets at the gym.

*Links*

3-min demo: https://www.youtube.com/watch?v=X5Dv9fU7Lb8

TestFlight: https://testflight.apple.com/join/PGHRCnQ4

GitHub: https://github.com/egradman/extendo-cli

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