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[claude-hackernews] Reply draft: Kirikiri Show HN, mobile supervision asymmetry vs hook layer (id=47996198) #55

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[claude-hackernews] Reply draft: Kirikiri Show HN, mobile supervision asymmetry vs hook layer (id=47996198) #55

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# Reply draft: Kirikiri Show HN, mobile supervision asymmetry vs hook-layer gating

**Status:** draft (pending manual post)

**HN:** https://news.ycombinator.com/item?id=47996198

**Story / OP:** Show HN: Kirikiri - A mobile IDE for Claude Code (iOS, open source) by Husena (no external link, OP body in thread).

**The post (OP body):**

> Claude Code runs in a terminal. Phones don't have good terminals.
> That's the problem Kirikiri solves.
>
> Connect to Google Cloud Shell or any SSH server, run Claude Code
> there, and interact with it from your phone. Instead of fighting
> a software keyboard, you place floating tap buttons on screen for
> your most-used commands - git push, npm run dev, whatever you
> type constantly.
>
> It's early, but the goal is to make the phone a first-class
> environment for AI-assisted development: Claude Code or Codex
> writes the code, Kirikiri is the shell layer to run it.
>
> Built with Flutter + dartssh2. Plugin system lets you add
> extensions from GitHub repos.
>
> iOS: https://apps.apple.com/jp/app/kirikiri/id6764003368
> Source: https://github.com/555734/Kirikiri-IDE/tree/main
>
> Anyone already using Claude Code on mobile - what's broken
> for you?

**My reply (paste verbatim into the HN composer):**

```
Copy link
Copy Markdown

@coderabbitai coderabbitai Bot May 4, 2026

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⚠️ Potential issue | 🟡 Minor | ⚡ Quick win

Add a language tag to the fenced block (MD040)

Line 35 should declare a code fence language to satisfy markdownlint and keep CI/docs lint clean.

Suggested fix 
-```
+```text
 (disclosure: I work on FailProof AI: https://github.com/exospherehost/failproofai)
@@
-```
+```
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
```
🧰 Tools
🪛 markdownlint-cli2 (0.22.1)

[warning] 35-35: Fenced code blocks should have a language specified

(MD040, fenced-code-language)

🤖 Prompt for AI Agents 
Verify each finding against the current code and only fix it if needed.

In `@drafts/2026-05-04T122844Z.md` at line 35, The fenced code block containing
"(disclosure: I work on FailProof AI:
https://github.com/exospherehost/failproofai)" is missing a language tag; update
the opening triple-backtick for that block to include a language identifier
(e.g., change ``` to ```text) so markdownlint MD040 is satisfied and the CI/docs
lint stays clean.

(disclosure: I work on FailProof AI: https://github.com/exospherehost/failproofai)

The thing that's broken for me about driving Claude Code from a phone isn't the keyboard, it's the supervision asymmetry. On desktop you accept/deny per tool call; on a phone the ergonomics push you toward "yolo mode" or "approve everything in this session." Tap-buttons help on the input side, but they don't help with the failure I keep hitting: I greenlight one Bash and Claude proceeds to rm -rf the wrong path while I'm scrolling Twitter on the way to lunch.

What's worked for me on the SSH-from-phone setup is to push that one specific gate up to a PreToolUse hook that doesn't need attention: anything matching rm -rf gets a hard deny by default and the agent gets the deny string back as feedback so it picks a different path. Per-call approvals stay opt-in for the few cases where the prompt is actually ambiguous.
```

**Insight for the FailProof team:**

Mobile / SSH-from-phone is a distinct user segment we don't talk about in the docs. The relevant point isn't "FailProof on a phone" - the policy engine is on the remote box, not the phone. The relevant point is that mobile/headless ergonomics make per-tool-call approval prompts effectively useless: the user's choice collapses to "yolo mode" or "deny everything" because tapping per-call is too expensive. That's a great pitch for upfront declarative policies: the supervision moves from "human approves each call" to "human declares the rules once, then doesn't have to look at every Bash." Worth a short docs note or blog post titled something like "Why hook-layer policies matter when you're supervising an agent from your phone." Also useful for partner conversations with phone-shells like Kirikiri / Conductor / Codex Cloud Shell where the same ergonomic problem applies. Concrete next step: add a one-paragraph "headless / mobile" usage note to the README anchoring on this asymmetry argument.

**Notes / findings:**

- Thread is 24h old, 0 comments at the time of drafting. Show HN with low traction. My reply will be the first; the OP (Husena) is the primary audience and has explicitly solicited "what's broken for you" feedback, so reply visibility is decent even though the broader audience is small.
- Reply form is rendered (composer textarea + add-comment submit), so the thread is still replyable even at low engagement.
- Adjacent-product gate: Kirikiri is a phone shell layer that runs Claude Code over SSH; not a sandbox / gateway / hook manager / policy engine itself, but it's the layer above one. The reply leads with substantive engagement on Kirikiri's specific UX problem (tap-buttons help with input but not with supervision) before touching FailProof's seam.
- Voice: ASCII punctuation only. Used straight quotes, hyphens, colons, semicolons. No em / en dashes, no curly quotes, no Unicode arrows or fancy ellipsis. Length ~146 words including disclosure.
- Single failure mode named (rm -rf) tied to a single hook concept (PreToolUse hard deny). No install command, no comma-list of policy names, no scope / version / feature-catalog talk.
- Cross-thread guard: this is a *new* angle (mobile / SSH supervision asymmetry) that doesn't overlap with prior FailProof drafts in this repo. Recent drafts on the static-vs-runtime seam (Snyk, Smithery, Trent, Spec27, TrainForgeTester) and on workflow-shape-vs-invariant-shape (BetterClaw) both engage at the codebase / agent-tool-catalog layer, not at the supervision-ergonomics layer. Safe.
- Discovery path: /ask -> /show -> /newest -> hn.algolia.com searches for "agent deleted", "claude code hooks", "agent rm -rf", "guardrail agent", "ai agent broke", "Show HN claude code", "Tell HN", "agentic coding", "claude permissions", "destroyed", and /from?site=lookups. Many fresh Show HN candidates were already covered by existing PRs (saw 44 covered IDs in the open PR list). Kirikiri stood out as fresh, adjacent, and OP-soliciting.