Fixing Cline’s OpenRouter 403 Provider Error with Cloudflare AI Gateway

Note: This article was primarily generated using Cline (an AI coding assistant) + OpenRouter with Claude 3.5 Sonnet.

Related GitHub issue: OpenRouter 403 Provider Error

Problem

Cline users are encountering 403 provider errors when making requests through OpenRouter.

Quick Fix

Use Cloudflare AI Gateway to route your OpenRouter requests:

Sign up for Cloudflare
Go to AI Gateway section
Update your OpenRouter base URL:

Before:

After: (Option 1 - Recommended approach, with prompt caching):

requires Cline version with PR #1397 (not merged)

After: (Option 2 - Recommended approach, with prompt caching):

requires Cline version with PR #2040 (not merged)

After: (Option 3 - Temporary use, no prompt caching, very expensive):

const baseURL = "https://gateway.ai.cloudflare.com/v1/{account_id}/{gateway_id}/openrouter";

For detailed setup: https://developers.cloudflare.com/ai-gateway/providers/openrouter/

Last modified on 2025-01-24