Decision tree: which command for which symptom?

When something's wrong with a Tauri app, the first 30 seconds matter. They decide whether you spend the next hour reading the right logs or the wrong ones. This page maps symptoms to the right tauri-agent-tools command.

When in doubt: diagnose

If you don't know where to start, run:

tauri-agent-tools diagnose --config ./src-tauri -o ./diagnose-out

diagnose is a best-effort super-command. It works on dead apps. It uses the bridge if one is available, and degrades cleanly if not. The output summary.md will point you at the right deeper command.

The flowchart

flowchart TD
    Start([Tauri app is broken]) --> Q1{App is running?}

    Q1 -- "No, it crashed" --> Forensics["<b>tauri-agent-tools forensics</b><br/>+ os-logs, app-paths, panic markers, DiagnosticReports"]
    Q1 -- "Yes" --> Q2{Bridge responding?}

    Q2 -- "No" --> Probe["<b>tauri-agent-tools probe</b><br/>Check token files, bridge process"]
    Probe --> FixBridge[Fix bridge, retry]
    FixBridge --> Q2

    Q2 -- "Yes" --> Q3{What's the symptom?}

    Q3 -- "Webview misbehaving" --> Health["<b>tauri-agent-tools health</b><br/>webview_ready + sidecar liveness"]
    Q3 -- "Sidecar suspected" --> Tap["<b>tauri-agent-tools sidecar tap</b><br/>Wrap-and-run, schema-validate NDJSON"]
    Q3 -- "IPC slow / wrong" --> Ipc["<b>tauri-agent-tools ipc-monitor</b><br/>Watch IPC calls for N seconds"]
    Q3 -- "DOM / UI inspection" --> Dom["<b>tauri-agent-tools dom + screenshot</b><br/>Real-pixel element capture"]
    Q3 -- "Over-broad permissions?" --> Caps["<b>tauri-agent-tools capabilities audit</b><br/>(live) or config inspect (static)"]

    Health --> Snapshot["<b>tauri-agent-tools snapshot</b><br/>DOM + state + storage bundle"]

    classDef cmd fill:#0d6e6e,color:#fff,stroke:#0d6e6e
    class Forensics,Probe,Health,Tap,Ipc,Dom,Caps,Snapshot cmd

Symptom → command (table form)

Pick the row that matches what's broken. Commands marked (bridge-free) work even when the app has crashed or the bridge isn't running.

Bridge-free vs bridge-required

Commands fall into two camps:

Bridge-free — work on any Tauri 2 app, including release builds and crashed processes: diagnose, forensics, app-paths, config inspect, os-logs, sidecar tap, sidecar replay, probe (reports instead of throwing when no bridge exists), logs (except --follow, which needs a live bridge), bundle (best-effort — its optional capture phase needs a bridge), plus list-windows, info, diff.

Bridge-required — need the dev bridge running inside a debug build: screenshot --selector, dom, eval, wait --selector, ipc-monitor, console-monitor, rust-logs, storage, page-state, mutations, snapshot, click, type, scroll, focus, navigate, select, invoke, capture, check, store-inspect, process-tree, capabilities audit, webview attach, health.

The four v0.7+ bridge commands feature-detect via GET /version — they emit a clear "requires bridge v0.7.0+, re-copy dev_bridge.rs" error against older bridges rather than failing with an opaque HTTP 404.

Platform caveats

• Windows — os-logs is stubbed in v0.7; the Windows event log adapter is planned. forensics and diagnose still produce useful bundles on Windows, they just skip the live OS-log tail.
• Tauri 1 — app-paths encodes Tauri 2's PathResolver semantics. Tauri 1's paths differ slightly; expect minor drift in derived directories.
• Release builds — the dev bridge requires cfg!(debug_assertions). Use bridge-free commands for signed/notarized release artifacts.