OCP — Open Claude Proxy

Status: Stable (v3.0.0) — Feature-complete. Bug fixes only.

Already paying for Claude Pro/Max? Use your subscription as an OpenAI-compatible API — $0 extra cost.

OCP turns your Claude Pro/Max subscription into a standard OpenAI-compatible API on localhost. Any tool that speaks the OpenAI protocol can use it — no separate API key, no extra billing.

Cline          ──┐
OpenCode       ───┤
Aider          ───┼──→ OCP :3456 ──→ Claude CLI ──→ Your subscription
Continue.dev   ───┤
OpenClaw       ───┘

One proxy. Multiple IDEs. All models. $0 API cost.

Supported Tools

Any tool that accepts OPENAI_BASE_URL works with OCP:

Tool	Configuration
Cline	Settings → OPENAI_BASE_URL=http://127.0.0.1:3456/v1
OpenCode	OPENAI_BASE_URL=http://127.0.0.1:3456/v1
Aider	aider --openai-api-base http://127.0.0.1:3456/v1
Continue.dev	config.json → apiBase: "http://127.0.0.1:3456/v1"
OpenClaw	setup.mjs auto-configures
Any OpenAI client	Set base URL to http://127.0.0.1:3456/v1

Quick Start

git clone https://github.com/dtzp555-max/ocp.git
cd ocp
node setup.mjs

The setup script will:

1. Verify Claude CLI is installed and authenticated
2. Start the proxy on port 3456
3. Install auto-start (launchd on macOS, systemd on Linux)

Then point your IDE to the proxy:

export OPENAI_BASE_URL=http://127.0.0.1:3456/v1

Verify

curl http://127.0.0.1:3456/v1/models
# Returns: claude-opus-4-6, claude-sonnet-4-6, claude-haiku-4

Built-in Usage Monitoring

Check your subscription usage from the terminal:

$ ocp usage
Plan Usage Limits
─────────────────────────────────────
  Current session       21% used
                      Resets in 3h 12m  (Tue, Mar 28, 10:00 PM)

  Weekly (all models)   45% used
                      Resets in 4d 2h  (Tue, Mar 31, 12:00 AM)

  Extra usage         off

Model Stats
Model          Req   OK  Er  AvgT  MaxT  AvgP  MaxP
──────────────────────────────────────────────────────
opus             5    5   0   32s   87s   42K   43K
sonnet          18   18   0   20s   45s   36K   56K
Total           23

Proxy: up 6h 32m | 23 reqs | 0 err | 0 timeout

All Commands

ocp usage              Plan usage limits & model stats
ocp status             Quick overview
ocp health             Proxy diagnostics
ocp settings           View tunable settings
ocp settings <k> <v>   Update a setting at runtime
ocp logs [N] [level]   Recent logs (default: 20, error)
ocp models             Available models
ocp sessions           Active sessions
ocp clear              Clear all sessions
ocp restart            Restart proxy
ocp restart gateway    Restart gateway
ocp version            Show version
ocp --help             Command reference

Install the CLI

# Symlink to PATH (recommended)
sudo ln -sf $(pwd)/ocp /usr/local/bin/ocp

# Verify
ocp --help

Cloud/Linux servers: If ocp: command not found, the binary isn't in PATH. Full path: ~/.openclaw/projects/ocp/ocp

Runtime Settings (No Restart Needed)

$ ocp settings maxPromptChars 200000
✓ maxPromptChars = 200000

$ ocp settings maxConcurrent 4
✓ maxConcurrent = 4

How It Works

Your IDE → OCP (localhost:3456) → claude -p CLI → Anthropic (via subscription)

OCP translates OpenAI-compatible /v1/chat/completions requests into claude -p CLI calls. Anthropic sees normal Claude Code usage — no API billing, no separate key needed.

Available Models

Model ID	Notes
claude-opus-4-6	Most capable, slower
claude-sonnet-4-6	Good balance of speed/quality
claude-haiku-4	Fastest, lightweight

API Endpoints

Endpoint	Method	Description
/v1/models	GET	List available models
/v1/chat/completions	POST	Chat completion (streaming + non-streaming)
/health	GET	Comprehensive health check
/usage	GET	Plan usage limits + per-model stats
/status	GET	Combined overview (usage + health)
/settings	GET/PATCH	View or update settings at runtime
/logs	GET	Recent log entries (?n=20&level=error)
/sessions	GET/DELETE	List or clear active sessions

OpenClaw Integration

OCP was originally built for OpenClaw and includes deep integration:

• setup.mjs auto-configures the claude-local provider in openclaw.json
• Gateway plugin registers /ocp as a native slash command in Telegram/Discord
• Multi-agent — 8 concurrent requests sharing one subscription

Install the Gateway Plugin

cp -r ocp-plugin/ ~/.openclaw/extensions/ocp/

Add to ~/.openclaw/openclaw.json:

{
  "plugins": {
    "allow": ["ocp"],
    "entries": { "ocp": { "enabled": true } }
  }
}

Restart: openclaw gateway restart

Environment Variables

Variable	Default	Description
CLAUDE_PROXY_PORT	3456	Listen port
CLAUDE_BIN	(auto-detect)	Path to claude binary
CLAUDE_TIMEOUT	300000	Overall request timeout (ms)
CLAUDE_FIRST_BYTE_TIMEOUT	90000	Base first-byte timeout (ms)
CLAUDE_MAX_CONCURRENT	8	Max concurrent claude processes
CLAUDE_MAX_PROMPT_CHARS	150000	Prompt truncation limit (chars)
CLAUDE_SESSION_TTL	3600000	Session expiry (ms, default: 1 hour)
CLAUDE_ALLOWED_TOOLS	Bash,Read,...,Agent	Comma-separated tools to pre-approve
CLAUDE_SKIP_PERMISSIONS	false	Bypass all permission checks
PROXY_API_KEY	(unset)	Bearer token for API authentication

Security

• Localhost only — binds to 127.0.0.1, not exposed to the network
• Bearer token auth (optional) — set PROXY_API_KEY to require auth
• No API keys needed — authentication goes through Claude CLI's OAuth session
• Auto-start — launchd (macOS) / systemd (Linux)

Known Issues

/ocp command returns "Unknown skill: ocp" (OpenClaw only)

The /ocp plugin command may intermittently stop working in Telegram/Discord. This is caused by an OpenClaw gateway bug (openclaw/openclaw#26895).

Workaround:

/new
/ocp restart

Important: Do not add ocp to agent skills lists or place a SKILL.md in workspace skills — this creates a routing conflict.

License

MIT