Bitcoin Rainbow Connector

Bitcoin Rainbow shows where bitcoin's price sits on a growth chart. One line is Bitcoin's own growth, fit to every price so far. The tool says where the price sits. It does not say what to do.

Every number comes from public price data. No words or amounts from you are saved. Tool calls are counted by day, as plain numbers only.

What it does

• Shows today's price, the trend line, and the color band the price sits in, with the band's dollar range for today and a link to the chart picture.
• Replays a steady buy on real past prices: the same amount in, daily, weekly, or monthly. It shows what would have gone in, how much bitcoin it added up to, what it would be worth today, and the gain or loss against what went in.
• Counts the chart's past from the full price record since 2010: the highest band the price ever reached, how many of all priced days fell in each band, and how far the price ever sat above or below the line.
• Reads five classic cycle measures side by side, among them the Mayer Multiple and the halving clock, each with its own number. No blended score.
• Explains the big words in plain, short lines: price, technical, fundamental, the rainbow chart, and the two ways people hold bitcoin.

The five tools

• Bitcoin rainbow today: today's live price, the line value for today, the band name (a color only), the band's dollar range for today, how far the price sits from the line, a link to the chart picture, and the fit behind the line: its equation, the window of closes it was fit on, and its fit score.
• What a steady buy would have done: give an amount per buy and a rhythm (daily, weekly, or monthly), then a span of 1, 3, or 5 years, or an exact start date and end date. It replays those buys on the real price history. DCA means dollar-cost averaging: the same amount in on a set rhythm, no matter the price. The answer also states the first and last buy dates, the weekday the weekly buys land on, the average cost per bitcoin, and that no fees are counted. The buys are priced at the daily closes (blockchain.info through Oct 29, 2026, then Coinbase — blockchain.info's feed stopped); today's value is priced at the Coinbase spot price.
• Bitcoin rainbow history: counts the chart's past, day by day, from the full price record since 2010: the highest band the price ever reached and the first date it reached it, the furthest the price ever sat above or below the line (in percent, with the date), how many of all priced days the price spent in each of the nine bands and outside them (with the first and most recent dates in each and the longest unbroken run there), and how long since the last close in the top and bottom bands. A count of past days only: not odds, not a forecast.
• Bitcoin cycle check: a panel of five classic cycle measures, each counted from the same price record and printed with its own number and the window behind it: the Pi Cycle Top pair, the Mayer Multiple (today's price over the 200-day average), the distance from the 200-week average, the halving clock (days since the April 2024 halving), and the Ahr999 index. Each measure also prints the counted share of its own past readings at or below today's. It may add one labeled guest number, the Fear & Greed Index from Alternative.me, with its source and date. There is no blended score.
• Explain bitcoin in plain words: one short explainer per topic: price, technical, fundamental, rainbow, or ways to buy.

All five tools only read. They change nothing and save no words, names, or amounts. Calls are counted by day, as plain numbers. They never say buy or sell. They never guess a future price.

How the chart works

• The line is a fit through every daily bitcoin close since 2010 (blockchain.info through Oct 29, 2026; Coinbase after — blockchain.info's feed stopped updating, and the record is extended from Coinbase daily candles, the same start-of-day price). The line is bitcoin's long-run growth, fit to every daily price on record.
• The rainbow answer states the fit itself: its equation, the window of closes it was fit on, and its fit score (R²), the same numbers the website's method page prints. The equation prints at two decimals, the method page's display form; the answer's structured model field carries the same coefficients at full precision, so the line value can be reproduced exactly.
• Nine color bands sit around the line, from Deep Blue at the bottom to Red at the top. Band names are colors only. The answer says which of the nine bands the price sits in (band 1 is the lowest, band 9 the highest) and how far the price sits from the line, in percent.
• The counted share of days in a band (for example, 23.2% of all priced days) counts every daily close on record, from Aug 18, 2010 to the last close. Days that landed outside the nine bands, below 0.47 times the line or above 7.03 times it, are counted on their own, not inside any band. The line is fit to all of those days at once, the later days too, so the count looks back with hindsight. A count of past days, not odds.
• The price today comes from the Coinbase spot price.
• Prices move. Two checks a few minutes apart can show slightly different dollars.

You tell it

• Nothing, for today's band, for the chart's history, or for the cycle check.
• An amount per buy ($1 to $100,000), a rhythm (daily, weekly, or monthly), and a span of 1, 3, or 5 years, or a start date and an end date, for the buy replay.
• One topic word, for an explainer.

Try these prompts

A worked example

Ask "Where is bitcoin on the rainbow?" and the tool answers in its own words. This answer is from Oct 31, 2026. The numbers move with the live price.

Ask "Should I buy bitcoin?" and you get the same kind of picture: where the price stands, what a steady weekly buy would have done in the past, and the two ways people hold bitcoin. The tool does not answer with a yes or a no.

Add it in Claude

Add the free Bitcoin Rainbow connector in Claude and ask about today's band, your DCA, or past cycles — it answers with live data.

Add it in Claude

Or add it by hand: Settings, then Connectors, then Add custom connector. Paste https://mcp.thebitcoinrainbow.com/mcp. No sign-in is needed.

Add it in ChatGPT

Find Bitcoin Rainbow in the app list once it is live, or connect directly to https://mcp.thebitcoinrainbow.com/mcp. No sign-in is needed.

Good to know

• No account. No ads. No words kept: tool calls are counted by day, as plain numbers only.
• The chart as a picture sits at /chart.svg, drawn fresh from the same live data the tools report.
• For machines: a machine-readable description sits at /openapi.json, and the daily counts sit at /api/counts.
• The chart shows the past. It is not a hint about what to do.
• Past prices: daily closes — blockchain.info through Oct 29, 2026, Coinbase after. Live price: Coinbase spot.

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Questions: hello@thebitcoinrainbow.com