Add an agent.
Swipe right on the one to start from. Then tune it with taps and bars, test it on years of prices and keep it. No prompt writing.
Tune your match.
Tap the blanks, pick a style, drag the bars. It reacts to everything.
The sentence
Buys when it , puts in each time, sells at , never risks more than . Brain: .
The style
Match an agent and its style shows up here: how it thinks, what it loves, where it is weak, and what it says.
The bars
What your agent will follow
Match an agent and its exact rules show up here: when it buys, how much, its limits and when it sells.
Tested on past prices.
Match an agent to run the first test.
One agent, $1,000 to start. Each order fills at the next day's open with a 0.05% trading cost; no commission, no taxes. Past prices say nothing certain about future ones.
Your agent
Match an agent, and it can be saved and shared from here.
Past daily pricesSaved agents stay in this browser. A share link carries the whole agent. Live on paper, it trades virtual $1,000 on live prices with these very rules, deciding after each close: paper money, not real.
Compare two styles.
Same ticker, same prices, same amounts. Only the style changes: each brings its own bars and trigger. On MSFT, $100 a buy, at most $500 in.
- Buys
- -
- Time in cash
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- Worst drop
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- End value
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- Buys
- -
- Time in cash
- -
- Worst drop
- -
- End value
- -
$1,000 to start for each, 2016 to today. Each order fills at the next day's open with a 0.05% trading cost; no commission, no taxes. Past prices say nothing certain about future ones.
The Breaker.
A second agent with one job: break yours. It throws nine attacks at it on past prices, tells you every weak spot in plain words, then builds a stronger version if one exists.
Match an agent first. Then the Breaker gets to work.
No target yet.
Connect to Robinhood.
Your AI app talks to Robinhood. Tinker sits next to it and says what your agent's rules say. You place every order yourself, in your own account.
Pick your AI app first.
Then six short steps, in Robinhood's own order:
- Open your AI app's connectors
- Add Robinhood
- Add Tinker
- Paste your agent's instructions
- Say hi
- Stay in charge
Claude, ChatGPT, Grok, Cursor or Codex. Robinhood names a few more apps on its own page.
What your AI is told right now
Rules on prices. Not advice and not an order.When your AI app asks Tinker what your agent would do now, this is the answer it gets: the same tool, the same rules, the same prices. Tinker places nothing.
Rules on past and live prices, not advice. You place every order yourself, in your own account. Tinker never sees your Robinhood login, your account or your money, and never places an order. What you approve there is at your own risk.
What you tested is what runs.
Every agent gets a fingerprint of its exact rules. Saved or on paper, it is recorded on Robinhood Chain with the agent it was remixed from, so anyone can check that the version you tested is the version that runs.