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1. Start PasteGuard

docker run --rm -p 3000:3000 ghcr.io/sgasser/pasteguard:latest
PasteGuard runs on http://localhost:3000. Open http://localhost:3000 to see the dashboard.
For custom configuration, Docker Compose, or persistent logs, see Installation.

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2. Choose Your Path

Browser Chat

Use the experimental browser extension with ChatGPT, Claude, and Gemini.

Apps & APIs

Change one base URL for your app or SDK.

Coding Agents

Point Codex, Claude Code, Cursor, and other coding agents at PasteGuard.

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3. API Endpoints

Point your app, SDK, or coding agent to PasteGuard:
TargetPasteGuard URL
OpenAIhttp://localhost:3000/openai/v1
Anthropichttp://localhost:3000/anthropic
Codex CLIhttp://localhost:3000/codex

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4. Verify It Works

Send a test request and check the response headers: 
curl -i http://localhost:3000/openai/v1/chat/completions \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gpt-5.2", "messages": [{"role": "user", "content": "Write a follow-up email to Dr. Sarah Chen (sarah.chen@hospital.org)"}]}'
Look for: 
X-PasteGuard-PII-Detected: true
X-PasteGuard-PII-Masked: true
The name and email were masked before reaching OpenAI and restored in the response.

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5. View Dashboard

Open http://localhost:3000 in your browser to see:
  • Request history
  • Detected PII and secrets
  • Masked content sent to upstream APIs or Codex CLI
PasteGuard Dashboard