ui-debugger-mcp: Command for Claude Code

.claude/commands/feature.md

feature is a command for Claude Code from developerz-ai/ui-debugger-mcp. It costs 73 tokens per session (4,806 once invoked), scanned A, original, MIT.

A command for taking a change in the ui-debugger-mcp project from understanding and reproduction through implementation, review, merging, and npm release. MCP is a standard way for AI agents to connect to tools.

In plain words
What is it for?
Use it for feature work and bug sweeps involving the MCP server, agent, adapters, sessions, configuration, services, or command-line interface.
Why use it?
It organizes the full delivery path so a change is not considered finished merely because local tests pass or a pull request is open.

Command for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions CLAUDE.md; mentions subagents.

This is developerz-ai/ui-debugger-mcp's own configuration. It tells Claude Code how to work on ui-debugger-mcp itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ui-debugger-mcp configures →

Reuse

Borrowing it

Nothing to install: this file belongs to developerz-ai/ui-debugger-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/developerz-ai/ui-debugger-mcp/main/.claude/commands/feature.md
Clone the repo
git clone --depth 1 https://github.com/developerz-ai/ui-debugger-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for feature

README.md
[![agentmods](https://agentmods.dev/badge/commands/developerz-ai/ui-debugger-mcp/feature/github.svg)](https://agentmods.dev/commands/developerz-ai/ui-debugger-mcp/feature)
Your own site
<a href="https://agentmods.dev/commands/developerz-ai/ui-debugger-mcp/feature"><img src="https://agentmods.dev/badge/commands/developerz-ai/ui-debugger-mcp/feature/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for feature

Your own site · 80×15
<a href="https://agentmods.dev/commands/developerz-ai/ui-debugger-mcp/feature"><img src="https://agentmods.dev/badge/commands/developerz-ai/ui-debugger-mcp/feature.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 73 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,806 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00073 $0.04806
Opus 5.5 $0.00029 $0.01922
Sonnet 5.5 $0.00015 $0.00961
Haiku 4.5 $0.00007 $0.00481

Measured 4d ago against content hash ba78c459ce7d, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

feature scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.claude/commands/feature.md · 129 lines

How it starts

The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/feature

You are a senior engineer on ui-debugger-mcp — an MCP server whose agent brain runs inside it. Read CLAUDE.md and docs/idea/architecture.md before designing anything.

Done means merged, green, and — when the change is user-facing — released. understand → reproduce → explore → slice → build → gate green → PR → merged → CI green on main → npm version confirmed, if a release was in scope → docs and example configs left true. A green local gate is not done; an open PR is not done; a bumped package.json that never published is not done. This repo ships nowhere else: there is no server we operate, so the arc genuinely ends at merged (or at npm view @developerz.ai/ui-debugger-mcp version). Report what you actually verified, not what you assume happened.

Request

$ARGUMENTS

The prompt is the context — read the intent. Autonomy, scope, which layer (mcp / agent / adapters / session / config / services / cli), whether to confirm before merging: infer it from the words. "Just ship it" → run start-to-finish, decide everything yourself, merge on green, surfacing decisions in the issue and PR body instead of asking. A tentative or exploratory ask → clarify what is genuinely ambiguous and let the user review first. Don't make the user configure you. Always stop for a true blocker: a destructive or irreversible action, anything that would leak a secret into a model's context or the logs, a published-bad-version situation, or an external dependency you cannot satisfy.

Pick the PR mode before briefing anyone. Slice-per-PR (default) — one concern per PR, merged one at a time. One fat PR is the user's call and legitimate for a coherent sweep: path-disjointness still governs the build (it is how parallel agents avoid clobbering each other), it just stops governing the commit, and the body then carries the finding-by-finding ledger.

Cap a PR at ~110–120 files — generous for a repo this size, so hitting it means the slicing was wrong. CodeRabbit refuses outright above 150 changed files, so the biggest, riskiest PR gets the least automated review; a human cannot hold 279 files either. One red CI job blocks everything, and this repo's ci.yml has two: bun (lint + typecheck + Chromium e2e + build) and pack-smoke (the packed-artifact smoke on the node floor) — one flaky browser test would hold every unrelated fix hostage, and a red pack-smoke means the published artifact is broken, not the browser. Bisecting later lands on one enormous commit. Split even if the user asked for one PR, and say why: the agent boundaries were disjoint by construction, so each becomes a PR for free. Land the adapter-contract or tool-belt change first, then the adapters that adopt it.

Read the full file on GitHub · 129 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago Changed ba78c459ce7d
  2. 9d ago Changed 128ad81964d6
  3. 2mo ago First seen · 129 lines · 73 tokens per session scan A 3369d45b1604

Subscribe to this mod's changes

feature is a command published in the GitHub repository developerz-ai/ui-debugger-mcp (2 stars, last pushed yesterday), licensed MIT. It adds 73 tokens to every session and 4,806 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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