A prompt cannot give an AI data it does not have. These prompts are written for ChatGPT or Claude connected to Basis, so each one makes the assistant look at the live market — and says what it will check — before it tells you anything.
The prompts that get shared ask a model to "act as a professional trader" and "give a signal". Without data, it fills the gap with the most plausible paragraph it can write: confident levels nobody measured, a trend read from memory.
The fix is not a better adjective in the prompt. It is a model that can check — and a prompt that asks it to show what it checked.
One server URL for every assistant. There is nothing to sign up for and no key to paste.
https://www.basischarts.com/api/mcpPlugins → the plus button → Add custom MCP server. Paste the URL, accept the notice and press Create as a plugin. Then switch Basis on in a new chat.
ChatGPT asks you to confirm before a tool that changes something runs, and building a chart counts as one. Available on plans that allow custom MCP servers.
Customize → Connectors → + Add → Add custom connector. Name it Basis, paste the URL, then Continue and Add.
Works on every Claude plan, including Free (one custom connector). There is nothing to authorise: the connector has no login step because Basis does not ask for one.
Run this once in any project. It is saved for every session afterwards.
claude mcp add --transport http basis https://www.basischarts.com/api/mcpAdd to ~/.cursor/mcp.json, or .cursor/mcp.json inside one project.
{
"mcpServers": {
"basis": {
"type": "http",
"url": "https://www.basischarts.com/api/mcp"
}
}
}Every client, tool and limit is on the Basis MCP page.
Say the venue, the pair and the timeframe. "BTC" is four different markets; "Binance BTCUSDT perpetual, 4h" is one.
"Is funding unusually high against its own history?" gets a measurement. "Should I long?" gets an opinion.
A level that invalidates the idea is worth more than a target, and an honest model will give you one when asked.
A pattern that happened four times is an anecdote. Ask how many cases a statistic rests on.
Asking for a chart link makes the assistant commit its levels to coordinates you can see.
Each one asks the assistant to check something specific, and says what it will look at — so you can tell a measured answer from a fluent one.
On Binance BTCUSDT perpetual, 4h: what is the trend, where is RSI, and which two levels matter most right now? Give me the chart.
Checks: Live candles, computed indicators and a chart with the levels drawn.
Compare BTC on the 1h, 4h and 1d. Where do the timeframes agree, and where do they disagree?
Checks: Candles and indicators on three timeframes.
Mark the most recent swing high and swing low on SOLUSDT 1h as horizontal lines and tell me when each printed.
Checks: Williams fractals on live candles, drawn on the chart.
Is ETH funding unusually high against its own recent history? Show the current rate, its average and its range.
Checks: Funding history from the venue.
Is open interest on BTC rising while price falls right now? Show me the last week of both.
Checks: Open interest and price history from the venue.
Compare funding on BTC and ETH perpetuals: which one is more crowded right now against its own history?
Checks: Funding history for both contracts, each against its own range.
Over the last hour on BTC, did aggressive buyers or sellers dominate, and at which prices was the volume heaviest?
Checks: Aggressor-tagged trades, delta and volume at price.
Did the last push up on ETH come with real buying, or did price rise on thin volume? Check the order flow.
Checks: Delta and volume for the move.
Which coins do the screened Hyperliquid whales agree on most right now, and on which side?
Checks: A research-screened whale group's current positions, summarised by coin: side, agreement and concentration.
Map the whale entries, liquidation zones and gamma walls around the BTC price on one chart.
Checks: The Founders levels map, drawn on a chart. Founders
Find coins on Binance where 1h RSI(14) is below 30 and volume is above its 20-bar average.
Checks: A market-wide screen on live candles.
Which of the most traded coins on Binance just closed above their 20-bar Donchian high on the 4h?
Checks: A breakout screen on live candles.
Scan for day-trade candidates in both directions on the 15m and give me the top three each way with the reason.
Checks: A symmetric long/short scan over the most traded futures.
Backtest a 20/50 EMA cross on ETH 4h with fees. How many trades, what drawdown, and how did it compare with holding?
Checks: A backtest of the built-in EMA cross on exchange candles, closed bars only, with costs.
Compare the built-in trend and mean-reversion strategies on BTC 1h and 4h, and tell me which held up on data it was not tuned on.
Checks: A strategy comparison with held-out validation.
I have a $1,000 account and risk 1%. Long BTC at the current price with a stop under the last swing low: what size, and what is the liquidation price at 5x?
Checks: The live price, the swing low and a position calculation.
Prepare an alert for when SOL closes a 1h candle below the last swing low.
Checks: The level from the chart and an alert rule you review before setting.
What high-impact events are scheduled this week, and what is the latest high-impact news on BTC?
Checks: The event calendar and the live news feed.
They will run, but an assistant without market data answers them from memory and search snippets — the confident guess these prompts exist to avoid. Connected to Basis, it checks first.
The one that asks the model to check something specific and show you the result: a named market, a timeframe, a measurement, and what would prove the idea wrong.
It can describe conditions precisely once it can see them. It cannot know what happens next, and a prompt that asks it to pretend produces a signal with nothing behind it.
No. Every prompt here runs on the free Basis server except the one marked Founders, which uses a paid tool and needs a member's link.
ChatGPT on plans with custom MCP servers, Claude on every plan including Free, Cursor, Claude Code and any client that speaks remote MCP.
Paste the URL into your assistant, then ask it what the market is doing — and to show you what it checked.
https://www.basischarts.com/api/mcpSetup steps are as OpenAI and Anthropic document them in October 2026; menus change. Basis reports what venues publish and what the maths says about it. Nothing here is financial advice.