Openclaw Billing Proxy — Development skill for Claude Code

OpenClaw Subscription Billing Proxy

Route your OpenClaw API requests through your Claude Max/Pro subscription instead of Extra Usage billing.

What This Does

After Anthropic revoked subscription billing for third-party tools (April 4, 2026), OpenClaw requests are billed to Extra Usage. This proxy sits between OpenClaw and the Anthropic API, injecting Claude Code's billing identifier so requests use your existing subscription.

**Zero cost increase. Full OpenClaw functionality. No code changes to OpenClaw.**

How It Works

The proxy performs 7-layer bidirectional request/response processing to defeat Anthropic's multi-layer detection:

**Outbound (request to API):**

1. Billing Header -- Injects an 84-character Claude Code billing identifier into the system prompt
2. Token Swap -- Replaces OpenClaw's auth token with your Claude Code OAuth token
3. String Sanitization -- Replaces 30 trigger phrases (OpenClaw, sessions_*, HEARTBEAT, etc.)
4. Tool Name Bypass -- Renames all 29 OpenClaw tool names to PascalCase Claude Code convention (e.g., exec -> Bash, lcm_grep -> ContextGrep) throughout the entire body
5. System Template Bypass -- Strips ~28K of structured config sections and replaces with a ~0.5K natural prose paraphrase
6. Tool Description Stripping -- Removes tool descriptions to reduce fingerprint signal
7. Property Renaming -- Renames OC-specific schema properties (e.g., session_id -> thread_id)

**Inbound (response to OpenClaw):** 8. **Full Reverse Mapping** -- Restores ALL original tool names, property names, file paths, and identifiers in both SSE streaming chunks and JSON responses

This ensures Anthropic sees what looks like a Claude Code session while OpenClaw sees its original tool names, paths, and identifiers.

Requirements

• Node.js 18+
• Claude Max or Pro subscription
• Claude Code CLI installed and authenticated
• OpenClaw installed and running

Installing Claude Code CLI (if not