What is claude-code-webui CLAUDE.md?

Repository-specific instructions for claude-code-webui, a web interface that streams responses from the Claude command-line tool. They cover setup, quality checks, and the backend and API structure.

Use them to install Git hooks, run quality checks, understand the backend, and work with project, chat, and streaming-response endpoints.

They tell contributors how to prepare the project and verify changes consistently.

How sugyan/claude-code-webui configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to sugyan/claude-code-webui. 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/sugyan/claude-code-webui/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/sugyan/claude-code-webui

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/instructions/sugyan/claude-code-webui/claude-md/github.svg)](https://agentmods.dev/instructions/sugyan/claude-code-webui/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/sugyan/claude-code-webui/claude-md"><img src="https://agentmods.dev/badge/instructions/sugyan/claude-code-webui/claude-md/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/instructions/sugyan/claude-code-webui/claude-md"><img src="https://agentmods.dev/badge/instructions/sugyan/claude-code-webui/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,346 This file is loaded in full into every session.

When invoked 2,346 The same file — it is already loaded in full.

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	$0.02346	$0.02346
Opus 5.5	$0.00938	$0.00938
Sonnet 5.5	$0.00469	$0.00469
Haiku 4.5	$0.00235	$0.00235

Measured 2mo ago against content hash c1b49e309dd4, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

claude-code-webui CLAUDE.md 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.md · 290 lines

How it starts

The opening of the file, as written. The whole thing — 290 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Code Web UI

A web-based interface for the claude command line tool that provides streaming responses in a chat interface.

Code Quality

Automated quality checks ensure consistent code standards:

Lefthook: Git hooks manager running make check before commits
Quality Commands: make check runs all quality checks manually
CI/CD: GitHub Actions runs quality checks on every push

Setup for New Contributors

# Install Lefthook
brew install lefthook  # macOS
# Or download from https://github.com/evilmartians/lefthook/releases

# Install and verify hooks
lefthook install
lefthook run pre-commit

Architecture

Backend (Deno/Node.js)

Location: backend/ | Port: 8080 (configurable)
Technology: TypeScript + Hono framework with runtime abstraction
Purpose: Executes claude commands and streams JSON responses

Key Features: Runtime abstraction, modular architecture, structured logging, universal Claude CLI path detection, session continuity, single binary distribution, comprehensive testing.

API Endpoints:

GET /api/projects - List available project directories
POST /api/chat - Chat messages with streaming responses ({ message, sessionId?, requestId, allowedTools?, workingDirectory? })
POST /api/abort/:requestId - Abort ongoing requests
GET /api/projects/:encodedProjectName/histories - Conversation histories
GET /api/projects/:encodedProjectName/histories/:sessionId - Specific conversation history

Frontend (React)

Location: frontend/ | Port: 3000 (configurable)
Technology: Vite + React + SWC + TypeScript + TailwindCSS + React Router
Purpose: Project selection and chat interface with streaming responses

Key Features: Project directory selection, routing system, conversation history, demo mode, real-time streaming, theme toggle, auto-scroll, accessibility features, modular hook architecture, request abort functionality, permission dialog handling, configurable Enter key behavior.

Read the full file on GitHub · 290 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.

2mo ago First seen · 290 lines · 2,346 tokens per session scan A c1b49e309dd4

Subscribe to this mod's changes

claude-code-webui CLAUDE.md is an instructions file published in the GitHub repository sugyan/claude-code-webui (1,136 stars, last pushed 5mo ago), licensed MIT. It adds 2,346 tokens to every session, about $0.0094 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.

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claude-code-webui: Instructions file for Claude Code