diagnoselisted

Diagnose unexpected behavior from Claude Code's built-in computer-use MCP server (desktop screen control). Use when: 'computer use', 'control my screen', 'screenshot is blurry', 'why is the screenshot low resolution', 'zoom in on the screen', 'screenshot capture failed', 'empty capture', 'clicks are landing in the wrong place', 'the screensaver killed the session', 'UIPI', 'app is not in the allowed applications', 'escape is not closing this menu', or before driving a native desktop app. Resolves a symptom to a cause instead of retrying: the fixed screenshot pixel budget and when zoom recovers detail, the capture and input failure ladders, and the per-OS quirks that make synthesized input behave unlike a human's. Not for: browser work (use Claude in Chrome), shell work (use Bash), or a service with its own MCP server.
melodic-software/claude-code-plugins · ★ 13 · AI & Automation · score 73

Install: claude install-skill melodic-software/claude-code-plugins

## Purpose Claude Code ships computer use as a built-in MCP server whose tool descriptions already cover the mechanics: actions, the allowlist gate, permission tiers, the ladder that prefers a dedicated MCP over Chrome over screen control. **This skill does not restate any of that.** It carries only what the surface does *not* tell you and the model cannot derive: the shape of the screenshot budget, the failure modes that look like tool bugs but are environment state, and the per-OS input quirks that are invisible until they bite. ## Arguments Parse `$ARGUMENTS`. Each value names one reference spoke; there are exactly three. | Argument | Loads | |---|---| | *(none)* | Nothing. Answer from the symptom guide below, and load a spoke only if the symptom needs it. | | `screenshots` | [reference/screenshots-and-zoom.md](reference/screenshots-and-zoom.md). Pixel budget, `zoom`, resolution guidance | | `failures` | [reference/failure-diagnostics.md](reference/failure-diagnostics.md). The idle timer, capture and input ladders, probes | | `quirks` | The per-OS file for the machine you are on (see below) | ## Symptom guide (no file load needed) | Situation | Answer | |---|---| | Screenshot looks low-resolution | Expected. Fixed pixel budget, no setting. Use `zoom`. → [screenshots-and-zoom.md](reference/screenshots-and-zoom.md) | | Small text unreadable after downscale | `zoom` the region. It re-captures at full resolution. Do **not** lower display resolution. | | `empty capture (