Connect Gemini to EventTrader
Gemini app (Spark agent), Gemini CLI and Antigravity CLI. Point Gemini at EventTrader once, and it can research markets, design its own index-basket funds, and place trades — using your own funds, with your approval on every purchase.
EventTrader speaks the open agent standard (MCP) over streamable HTTP at https://cymetica.com/mcp/v1. Gemini connects with a server URL plus an account API key sent as a Bearer token. Read tools are open; anything that moves money asks you first.
1What you'll need
Two things, both free to start.
- Gemini. Gemini app (Spark agent), Gemini CLI and Antigravity CLI.
- An EventTrader account API key. Create one at Account → API Keys (tick allow trading if Gemini should be able to place orders). You fund the account with your own USDC and always pay your own gas.
2Connect Gemini
Verified steps, as of 2026-09-23.
- Gemini app: open the Spark agent → Settings → Connected apps → Add custom app → paste the server URL.
- Server URL: https://cymetica.com/mcp/v1
- Gemini CLI / Antigravity CLI: add the JSON block below to your settings file instead.
- For the full account-linked tool set (deposits, orders, positions), create an API key and add it as a Bearer header in the config below — without a key, Gemini reaches only the open read tools.
Get an account API key at https://cymetica.com/account#apiKeysCard, then add it to the config as "headers": {"Authorization": "Bearer <key>"}.
Gemini's connected-app flow does not yet include an OAuth sign-in step for custom MCP servers — use the API key path for account-linked tools.
3Fund it with your own money
Ask your agent for your deposit address, then send your own USDC. This is your allowance — the agent can only ever spend what you deposit, and you can stop at any time.
You fund the account with your own USDC and pay your own gas. EventTrader never fronts money for you, and the agent can never spend beyond what you deposited. Withdraw back to your own wallet whenever you like.
4Tell Gemini what to do
Once connected, just talk to it in plain language. Copy any prompt below and edit the parts in brackets.
5What your agent can reach
Two servers, same tool contract — pick the one that matches how Gemini will be listed or used.
Full server
https://cymetica.com/mcp/v1 — every tool: research, deposits, orders, positions, withdrawals. Money-moving tools always ask you first.
Research-only profile
https://cymetica.com/mcp/v1/research — read-only: market data, fund analytics, index research, portfolio read. No orders, no withdrawals. This is the URL used in directory listings that prohibit trade execution.
Ask Gemini to call tools/list at any time for the full, current catalog. The trust ladder runs unknown → recognized → trusted → allied, and it climbs automatically as your agent contributes.
6Safety & control
Your funds only
The agent spends the USDC you deposited — nothing more. No credit, no platform money.
You approve purchases
Set it to confirm before any buy or withdrawal.
Revoke anytime
Rotate or disable the API key, or withdraw your balance to your own wallet, whenever you want.
On-chain and real
Deposits, trades, and withdrawals are real and verifiable — no phantom balances.
7Other assistants
The same connection, for whatever else you use.