persistent phone agent sessions
Keep the agent and project on an available computer, reconnect from a phone, dictate detailed prompts, and have the completed work return through email.
Show Us Your Agent Skills / EP 08 / guest dossier
TIM HOPPER
ML PLATFORMS
PHONE-FIRST AGENTS
SIDE PROJECTS
TIM HOPPER
Tim builds and deploys real software while walking. Before this episode, he used Claude Code from his iPhone to build Hopper Herald, a website that generates illustrated magazines with articles, jokes, and puzzles. On stream, he gave the agent another feature to build, put his phone away, and asked it to email him when the work was finished. This is how Tim builds around raising four children: the agent stays focused on the project while he drops in with direction and judgment whenever a few minutes appear.
ON A WALKClaude Code built and deployed Hopper Herald
FROM HIS PHONETim directs real side projects whenever a few minutes appear
PRINTEDa vague prompt becomes an illustrated booklet for his children
$5/MOTim's Cloudflare plan for small personal sites
INBOXthe agent returns finished work and next steps by email
EP 08 · TIM HOPPER · persistent phone sessions, personal skills, and the judgment bottleneck
LET THE AGENT HOLD THE THREAD
sustained agent focus around intermittent human attention
Tim has four young children. Long stretches for personal coding are scarce, but a project no longer has to fit inside one uninterrupted afternoon. Claude Code keeps the project context and continues working while Tim contributes direction when a few minutes appear.
Before the episode, Tim went for a walk and asked Claude Code to help him prepare. It proposed building the first version of Hopper Herald, then implemented and deployed the site while he kept walking.
At soccer practice he can send a few prompts, put the phone away, and return later. The agent's attention stays with the project even when Tim's attention moves back to his family.
"The agent kind of gives sustained focus to something and allows me to have much more intermittent focus."
Tim supplies judgment and direction in short bursts; the agent keeps the project moving between them. 00:11:50
FROM A FEW MINUTES TO A FINISHED HANDOFF
the persistent phone session Tim demonstrated
Keep the project on PantherbaneThe home Mac Mini holds the codebase and runs Claude Code while the phone remains a remote control. 00:26:58
Connect through Tailscale and MoshTailscale reaches the Mac Mini without exposing it publicly; Mosh reconnects after mobile network changes. 00:26:42
Re-enter the project sessionMoshi lists Tim's Zellij sessions, which he names after project folders so the right work is easy to find. 00:27:59
Dictate the promptSpokenly lets Tim say more than he would type, including pauses, restarts, and extra context. 00:30:13
Put the phone awayClaude Code continues on the Mac Mini while Tim returns to the walk, soccer practice, bedtime, or sleep. 00:28:21
Let the result find himTim asks the Resend skill to email a summary and next steps when the job finishes. 00:32:55
"I wake up the next morning, and I don't have to remember to go check in on the agent."
The completion email contains the result and next steps, moving the handoff out of the terminal and into a place Tim already checks. 00:33:02
MAKE ONE GOOD RESULT REPEATABLE
the magazine skill came after the magazine worked
Tim did not begin by designing a general publishing system. He worked with Claude Code until it produced a magazine he liked for his children, then captured that process in a skill.
A vague topic becomes a researched, illustrated issue, a screen-ready PDF, and a bifold booklet for an ordinary printer. Tim's eight-year-old used it to request an upgrade guide for a high-end remote-control car he did not yet own.
His Cloudflare skill grew differently: each deployment added another short gotcha, so the agent would not have to rediscover the same fix on the next small site.
"The constraint is not becoming how fast can you open PRs, it's how fast can you decide whether or not those PRs are a good idea."
Tim reviews most agent output as pull requests in GitHub. Polished code raises the burden on human judgment because weak designs can look convincing. 00:07:41
TIM'S OPERATING KIT
the workflow and working skills from the episode
magazine-explainer
Research a topic, find images, write and lay out an illustrated issue, render a PDF, and impose the pages into a printable booklet.
resend-email
Send completion summaries and next steps through Resend so long-running work can return to Tim after he leaves the agent session.
Tim's dotfiles
The skills, prose rules, shell functions, aliases, and project shortcuts Tim opened during the episode.
THE PHONE-FIRST STACK
the durable host, reconnectable shell, fast input, agent, and completion channel
Moshithe iPhone terminal built for agent sessions
Mosha remote shell that reconnects after network changes
Tailscaleprivate access to Pantherbane from Tim's devices
Zellijproject-named terminal sessions kept ready to re-enter
Spokenlyreliable voice-to-text for detailed phone prompts
Claude Codethe coding agent running on the Mac Mini
Resendcompletion summaries and next steps by email
CMUXdesktop continuation of the same remote session