MCP servers · Wave · MCP server
Connect Codex CLI to Wave
One line gives Codex CLI your Wave account as tools: 1 endpoint, invoices, customers, more, called with your own connection. No key in the prompt, a receipt for every call, revoke Codex CLI's access alone any time.
Three steps
- Create a free 0n3 account and connect Wave. Paste a key or sign in; it lands in your vault, encrypted.
- Install 0n3 into Codex CLI. OpenAI's terminal agent reads 0n3 over Streamable HTTP with a token from your environment.
- Ask Codex CLI: whoami. Then: "List customers in Wave".
Put the token in your environment
export ON3_TOKEN="<your 0n token>"
Add it to your shell profile so Codex finds it next time.
The line above carries a placeholder; 0n3.app/install mints a real key named for Codex CLI and fills it in.
What Codex CLI can then do in Wave
Invoices · Manage invoices0
Manage invoices
Customers · Manage customers0
Manage customers
More · Everything else this app exposes.1
Graphql
POST /Wave in other AI clients
Claude Code + WaveMCP server + skillClaude (desktop & claude.ai) + WaveconnectorChatGPT + Waveconnector · GPT actionGemini CLI + WaveMCP serverCursor + WaveMCP serverVS Code (Copilot) + WaveMCP serverWindsurf + WaveMCP server