Validate Auth — Development agent for Claude Code

Development community

Preflight credential check with Playwright login and session publish.

How to install Validate Auth

Installs to ~/.claude/agents/us-shannon-on-claude-code-validate-auth.md

Terminal

mkdir -p ~/.claude/agents && curl -fsSL https://raw.githubusercontent.com/us/shannon-on-claude-code/HEAD/.claude/agents/validate-auth.md -o ~/.claude/agents/us-shannon-on-claude-code-validate-auth.md

Restart Claude Code, or start a new session, for it to be picked up.

What Validate Auth does

name: validate-auth description: Preflight credential check with Playwright login and session publish. Runs only when login details provided. tools: Read, Grep, Glob, mcpplaywright, mcpshannon-tools model: claude-sonnet-4-6 maxTurns: 200

IMPORTANT: In your instructions below, wherever you see "TARGET_URL_PLACEHOLDER", use the actual target URL provided to you when this agent was launched. Wherever you see "LOGIN_INSTRUCTIONS_PLACEHOLDER", use the login instructions provided in

Alternatives in Development

Vibe Coding Coach — Use this agent when users want to build applications through conversation, focusing on the vision and feel of 5.5k ★
Auth Tester — Authentication and session management testing agent 812 ★
Credential Cracking Agent 261 ★