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brian austin
brian austin

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Claude Code without rate limits: set ANTHROPIC_BASE_URL in 30 seconds

#ai #webdev #claudecode #productivity

Claude Code without rate limits: set ANTHROPIC_BASE_URL in 30 seconds

You're in the middle of a refactor. Claude Code has touched 12 files, tests are almost passing, and then:

Claude AI usage limit reached. Please wait before continuing.
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The session is broken. You lose context. You start over.

This doesn't have to happen.

What ANTHROPIC_BASE_URL actually does

Claude Code sends every request to https://api.anthropic.com. That's the default. But there's an environment variable that overrides this:

export ANTHROPIC_BASE_URL=https://your-proxy.com
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When this is set, every Claude Code request goes to your proxy instead. The proxy forwards to Anthropic using its own API key — which has higher limits, or in some cases, no rate limits at all.

The 30-second setup 

# Add to your ~/.bashrc or ~/.zshrc
export ANTHROPIC_BASE_URL=https://api.simplylouie.com
export ANTHROPIC_API_KEY=your-simplylouie-key

# Reload
source ~/.zshrc

# Verify Claude Code uses it
claude --version
echo $ANTHROPIC_BASE_URL
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That's it. Claude Code now routes through the proxy automatically. No other changes needed.

Why this works

SimplyLouie (simplylouie.com) is a $2/month Claude API proxy. It:

  • Accepts standard Anthropic API format — no SDK changes
  • Works with claude CLI, Claude Code, and any direct API call
  • Provides API keys you can set in ANTHROPIC_BASE_URL
  • Costs $2/month vs $20/month for Claude Pro 
# Test it directly
curl https://api.simplylouie.com/v1/messages \
  -H 'x-api-key: YOUR_KEY' \
  -H 'anthropic-version: 2023-06-01' \
  -H 'content-type: application/json' \
  -d '{
    "model": "claude-opus-4-5",
    "max_tokens": 100,
    "messages": [{"role": "user", "content": "ping"}]
  }'
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Same response format as direct Anthropic. Your existing code doesn't change.

Claude Code config alternative

If you prefer not to use environment variables, Claude Code also reads from ~/.claude/config.json:

{
  "apiBaseUrl": "https://api.simplylouie.com",
  "apiKey": "your-simplylouie-key"
}
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This is permanent across terminal sessions without needing to export anything.

For CI/CD pipelines

GitHub Actions example:

- name: Run Claude Code task
  env:
    ANTHROPIC_BASE_URL: https://api.simplylouie.com
    ANTHROPIC_API_KEY: ${{ secrets.SIMPLYLOUIE_KEY }}
  run: |
    claude -p "Review this PR for security issues" --output-format json
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This is cleaner than managing Anthropic API keys directly in CI — one proxy key works across all your repos.

The math

Option Cost Rate limits
Claude Pro $20/month Yes — session limits
Anthropic API (direct) Pay per token Yes — RPM/TPM limits
SimplyLouie proxy $2/month Higher pooled limits

For solo developers using Claude Code daily, the proxy approach is the lowest friction path to uninterrupted sessions.

One more thing

The env var approach also works for any tool that talks to Anthropic:

  • claude CLI (official)
  • Claude Code
  • LangChain (set base_url in AnthropicChat)
  • LlamaIndex
  • Any direct HTTP client

All of them check for the base URL override before using the default endpoint.

Try it: simplylouie.com — 7-day free trial, $2/month after.

If you hit rate limits regularly, this is the fastest fix available.

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