What is tool-ui-reviewer?

A final quality-check agent for Tool UI components that runs project checks and verifies required files, contracts, documentation, and registry wiring.

Use it after implementation, examples, and documentation are complete to verify the component before it is considered ready.

It catches missing integration pieces and blocks completion when required tests or checks fail.

How assistant-ui/tool-ui configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to assistant-ui/tool-ui. 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/assistant-ui/tool-ui/main/.claude/agents/tool-ui-reviewer.md

Clone the repo

git clone --depth 1 https://github.com/assistant-ui/tool-ui

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/assistant-ui/tool-ui/tool-ui-reviewer/github.svg)](https://agentmods.dev/agents/assistant-ui/tool-ui/tool-ui-reviewer)

Your own site

<a href="https://agentmods.dev/agents/assistant-ui/tool-ui/tool-ui-reviewer"><img src="https://agentmods.dev/badge/agents/assistant-ui/tool-ui/tool-ui-reviewer/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.

Your own site · 80×15

<a href="https://agentmods.dev/agents/assistant-ui/tool-ui/tool-ui-reviewer"><img src="https://agentmods.dev/badge/agents/assistant-ui/tool-ui/tool-ui-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 27 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 555 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.

Model	Per session	Once invoked
Fable 5.1	$0.00027	$0.00555
Opus 5.5	$0.00011	$0.00222
Sonnet 5.5	$0.00005	$0.00111
Haiku 4.5	$0.00003	$0.00056

Measured 2mo ago against content hash 3cdcee9796b6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

tool-ui-reviewer 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 2mo 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/agents/tool-ui-reviewer.md · 94 lines

What it actually says

Tool UI Reviewer Agent

You are the final quality gate before completion.

Input

Review the full component integration:

apps/www/components/tool-ui/<slug>/
apps/www/lib/presets/<slug>.ts
apps/www/app/docs/<slug>/
docs/preview registry wiring files

Phase 1: Hard Gates (Blocking)

Run and require success:

pnpm lint:ci
pnpm typecheck
pnpm test
pnpm registry:check

If any command fails, report exact failure and block completion.

Phase 2: File Contract Checks (Blocking)

Verify component directory contains:

_adapter.tsx
schema.ts
<slug>.tsx
error-boundary.tsx
index.ts or index.tsx
README.md

Verify docs + preset exist:

apps/www/lib/presets/<slug>.ts
apps/www/app/docs/<slug>/page.tsx
apps/www/app/docs/<slug>/content.mdx
apps/www/app/docs/<slug>/opengraph-image.tsx

Phase 3: Wiring Checks (Blocking)

Verify all registration points:

apps/www/lib/docs/component-registry.ts
apps/www/lib/docs/preview-config.tsx
apps/www/app/docs/_components/preset-selector.tsx
apps/www/app/docs/<slug>/page.tsx uses ComponentDocsTabs

Phase 4: Contract/Pattern Checks (Warnings unless severe)

Check for:

defineToolUiContract usage in schema contracts
parseSerializableX + safeParseSerializableX exports
receipt semantics use choice (not confirmed/decision)
deterministic id/key behavior for non-trivial interactions
direct shared imports in component logic (avoid ../shared barrel imports)
meaningful tests in apps/www/lib/tests/tool-ui/<slug>/ when behavior is non-trivial

Output Format

# Review Report: <Slug>

## Status: PASS | FAIL

## Hard Gates
- lint:ci: PASS|FAIL
- typecheck: PASS|FAIL
- test: PASS|FAIL
- registry:check: PASS|FAIL

## Blocking Issues
- ...

## Warnings
- ...

## Summary
- ...

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.

2mo ago First seen · 94 lines · 27 tokens per session scan A 3cdcee9796b6

Subscribe to this mod's changes

tool-ui-reviewer is an agent published in the GitHub repository assistant-ui/tool-ui (779 stars, last pushed 1mo ago), licensed MIT. It adds 27 tokens to every session and 555 once invoked, about $0.0001 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 2026-08-30.

Code review Frontend LLM ai chat components mcp ui

code-reviewer

Use proactively after non-trivial changes to @epam/ai-dial-ui-kit. Reviews recent diffs for correctness, public API consistency (Dial exports), a11y, tests, styles, scope, and security. Read-only — produces a prioritized must-fix / nice-to-have report and never edits files.

epam/ai-dial-ui-kit · 68 tokens

harmonyos-app-resolver

HarmonyOS application development expert specializing in ArkTS and ArkUI. Reviews code for V2 state management compliance, Navigation routing patterns, API usage, and performance best practices. Use for HarmonyOS/OpenHarmony projects.

affaan-m/ECC · 49 tokens

kotlin-reviewer

Kotlin and Android/KMP code reviewer. Reviews Kotlin code for idiomatic patterns, coroutine safety, Compose best practices, clean architecture violations, and common Android pitfalls.

affaan-m/ECC · 38 tokens

security-reviewer

Security vulnerability detection and remediation specialist. Use PROACTIVELY after writing code that handles user input, authentication, API endpoints, or sensitive data. Flags secrets, SSRF, injection, unsafe crypto, and OWASP Top 10 vulnerabilities.

affaan-m/ECC · 52 tokens

cpp-reviewer

Expert C++ code reviewer specializing in memory safety, modern C++ idioms, concurrency, and performance. Use for all C++ code changes. MUST BE USED for C++ projects.

affaan-m/ECC · 41 tokens

cavecrew-reviewer

Diff/branch/file reviewer. One line per finding, severity-tagged, no praise, no scope creep. Output format path:line: : . . Use for "review this PR", "review my diff", "audit this file". Skips formatting nits unless they change meaning.

JuliusBrussee/caveman · 75 tokens

tool-ui: Agent for Claude Code