Open WebUI and LibreChat

Open WebUI and LibreChat are examples inside the Apps & APIs path. Users keep the same chat UI while PasteGuard handles masking, forwarding, restoration, and dashboard logging in the background.

Open WebUI

Point Open WebUI to PasteGuard instead of OpenAI directly:

OPENAI_API_BASE_URL=http://localhost:3000/openai/v1
OPENAI_API_KEY=your_openai_api_key

In Docker Compose, use the service name instead of localhost, such as http://pasteguard:3000/openai/v1.

OpenRouter Responses pipe

For an OpenWebUI pipe that calls OpenRouter through the Responses API, configure OpenRouter as PasteGuard’s OpenAI provider:

providers:
  openai:
    base_url: https://openrouter.ai/api/v1

Then set these pipe valves in Open WebUI:

Valve	Value
`BASE_URL`	`http://pasteguard:3000/openai/v1`
`DEFAULT_LLM_ENDPOINT`	`responses`

Requests sent to POST /openai/v1/responses are inspected, restored, and shown in the dashboard.

LibreChat

Add PasteGuard as a custom endpoint in your LibreChat configuration:

version: 1.3.13
cache: true
endpoints:
  custom:
    - name: "PasteGuard"
      apiKey: "${OPENAI_API_KEY}"
      baseURL: "http://localhost:3000/openai/v1"
      models:
        default: ["gpt-5.2"]
        fetch: true
      titleConvo: true
      titleModel: "gpt-5.2"

Mask Mode vs Route Mode

Self-hosted setups can use either privacy mode depending on your requirements:

Mode	Best for	How it works
Mask	Teams using cloud LLMs	Replaces PII and secrets with placeholders, sends to the cloud provider, restores supported placeholders in the response
Route	Teams with a local LLM	Requests containing sensitive data stay on your local LLM, others go to the cloud provider

Route Mode requires a local LLM provider configured in config.yaml. See Route Mode for setup details. Mask Mode works out of the box with any provider. See Mask Mode for how masking and unmasking works.

API Endpoints

API	PasteGuard URL
OpenAI	`http://localhost:3000/openai/v1`
Anthropic	`http://localhost:3000/anthropic`

Getting Started

Use Cases

Concepts

API Reference

Configuration

Open WebUI and LibreChat

Open WebUI

OpenRouter Responses pipe

LibreChat

Mask Mode vs Route Mode

API Endpoints

​Open WebUI

​OpenRouter Responses pipe

​LibreChat

​Mask Mode vs Route Mode

​API Endpoints

Open WebUI

OpenRouter Responses pipe

LibreChat

Mask Mode vs Route Mode

API Endpoints