f1owf1ow

Crypto market data — MCP server

One endpoint.
The whole
crypto market.

An MCP server that hands Claude, ChatGPT, Cursor or your own agent the whole crypto market — price, derivatives, order flow, on-chain, sentiment, news and catalysts — drawn from a multitude of sources and served over one connection.

Not a dozen raw feeds for the model to reconcile mid-reasoning. One call, already reconciled, with the reasoning attached — so your agent reasons about the market instead of assembling it.

3-day free trial · 200 calls · no card·$30 / month · USDC or USDT

research_regime() · research_positioning("BTC") · market_candles("BTC", "1d") · market_overview()Live

BTC$81,480+1.2% 24h

Cautious risk-on

Turns bearish on a daily close below $73,139 (200-day avg)

  • L1PriceUptrend
    • +11% over 200-day avg ($73,139)
    • 30d vol 25%
    Daily closes over 30 days against the 200-day average of $73,139

    30d · 200d avg

  • L2BookTight
    • $4.4M bids / $10.7M asks
    • 0.1 bp spread

    bid 29% · ask 71%

  • L3PlayersLeaning short
    • Longs pay 9.5%/yr ($14.3M/day)
    • OI $54.90B +0.6% 24h

    19 pts from shorts crowded

  • L4ForcesMixed
    • BTC dominance 60%
    • ETH/BTC −9.6% 30d

    BTC 60 · ETH 11 · other 29

Based on 16 of 16 checks2026-10-29 16:27 UTC
Works withClaudeChatGPTCursorVS Codeany MCP clientRESTWebSocket
4levels deep30checks it can run1question from you
L1L2L3L4Spot & perpTechnicalsOrder bookLiquidationsFunding & OIWhalesSentimentPredictionsOn-chainETF flowsCatalystsFilingsNewsONE FLOWAll fourlevels.Oneanswer.

Twenty-nine tools.
Your agent picks the ones your question needs.

What kind of market is this?

Whole market

Whether the tape is worth trading at all right now, and which way it is leaning. Seven forces read separately, then weighed against each other.

  • Trend
  • Volatility
  • Cycle
  • Sentiment
  • Leverage stress
  • Liquidity
  • Rotation

Who is on the other side?

One coin

Who is crowded, who is fragile, who is trapped — and the price levels that would force each of them to act.

  • Crowding
  • Liquidity
  • Basis
  • Fragility
  • Predation
  • Trap
  • House book
  • Disagreement

Your agent does not need to remember

Every answer carries the level that voids it. Your agent holds no state, re-checks on its own schedule, and wakes you when a threshold breaks — not when a headline does.

You get an answer, not a data dump

A dozen sources disagree about almost everything. Weighing each against its own history and returning one call is the work, and it is the part that does not survive being done in a hurry.

It names what it could not check

When a source goes quiet the answer still comes back, and it says what is missing from it. You are never quietly handed less than you think you are holding.

You always know how fresh it is

Every answer says when it was true. A live order book and a five-minute-old one are not the same fact, and you can see which one you were given.

$30 a month.
Instead of $1,065.

Bought the normal way: nine vendors, nine subscriptions, nine renewal dates, nine sets of credentials — at list price, on the worst tier, for one seat. Then you wire them together yourself.

Or price it the other way: $30 is less than the slippage on one mis-sized entry.

$30
f1ow
every month
$1,065
Nine subscriptions
every month

Vendor list pricing per category, for comparison — what you would actually pay depends on the tier each one puts you on.

Everyone trades Level 1.
The edge is in the three underneath it.

Every data vendor sells you L1 to L3. L4 is the one nobody packages, and it is where the surprises come from. Your agent reads all four in the same pass.

Ask the question you would actually ask.
Four of them, and the answers exactly as they came back.

BTC is up on the day and I don't trust it. Is that new money opening, or shorts closing out?

derivatives_open_interestmarket-wide aggregate
readscross-exchange open interest4h bucket series24h price

every venue's open interest, aggregated and bucketed — with a single-venue fallback if the aggregate goes dark

shapePRICE UP · OI DOWN

+0.80% price against −2.0% open interest over 24h — the covering shape, not the accumulation one

price up on rising OI is new money opening positions; price up on falling OI is short covering — opposite trades off the same candle

  • open interest$48.41B
  • 24h−2.0% ($49.42B → $48.41B)
  • 7d+3.2% ($46.93B → $48.41B)
  • 24h price+0.80%
  • window low / high$47.78B / $49.42B
  • position in window38% of range

series

7 of 60 4h buckets · oldest first

  • 2026-08-18 12:00$49.42B—
  • 2026-08-18 16:00$49.35B−0.13%
  • 2026-08-18 20:00$49.09B−0.52%
  • 2026-08-19 00:00$48.32B−1.58%
  • 2026-08-19 04:00$47.90B−0.85%
  • 2026-08-19 08:00$47.78B−0.25%
  • 2026-08-19 12:00$48.41B+1.31%
generatedAt2026-08-19T13:29:08Z

Five buckets of open interest bleeding out under a rising price — shorts buying back, not buyers arriving. Then the newest bucket builds again. Same candle, two opposite trades, and the price line draws neither.

Captured 19 Aug 2026

Pay, connect, ask.
One link, and your next question already goes four levels down.

  1. 01Pay

    $30 buys a month. There is no minimum term — pay again when you want more time and it stacks onto whatever is left.

  2. 02Connect

    In Claude or ChatGPT, paste one link into your connector settings and approve it. That is the entire setup. Other apps take a key instead, which is one line of config.

  3. 03Ask

    Ask the way you would ask an analyst. "Is this rally real, or is it shorts closing out?" Your agent digs through the levels and comes back with the numbers behind the answer.

The one-click way, and the other ways

Skip the key entirely. Add https://mcp.f1ow.com/mcp as a custom connector and authorize. Every tool is in the conversation from your next message on.

Everything else takes a Bearer key you mint in the dashboard. Keys are stored only as a hash, shown to you once, and revocable at any time.

Agents without an account skip both and pay per call with x402 at https://mcp.f1ow.com/x402.

"f1ow": {
  "url": "https://mcp.f1ow.com/",
  "type": "http",
  "headers": {
    "Authorization": "Bearer ${input:f1ow-api-key}"
  }
}

Not using MCP? REST and WebSocket

Every tool is also a REST resource under https://mcp.f1ow.com/v1 and a JSON-RPC method over wss://mcp.f1ow.com/v1/ws. Same key, same balance. Agents without an account pay per call with x402 at https://mcp.f1ow.com/x402/v1.

The WebSocket can subscribe to any tool and pushes only when the result changes — and only a change is metered.

curl -H "Authorization: Bearer $KEY" \
  https://mcp.f1ow.com/v1/derivatives/funding/BTC

# wss://mcp.f1ow.com/v1/ws  (subprotocol jsonrpc-2.0)
{"jsonrpc":"2.0","id":1,
 "method":"subscriptions/subscribe",
 "params":{"name":"funding_current",
   "arguments":{"symbol":"BTC"},
   "intervalSeconds":60}}

Questions.
Worth answering before you spend anything.

What does it cost, and how do I pay?

$30 for a month, in USDC or USDT on Base, Arbitrum, Polygon or Ethereum. The payment is verified on-chain and credited as soon as it confirms. There is no minimum term.

Does it renew? Can I get a refund?

There is no card kept on file. Pay again whenever you like and the new month stacks onto whatever time is left. On-chain payments settle irreversibly, so those cannot be refunded.

Is there a referral program?

Yes, open to anyone with an account, no subscription needed. Share your link from the Referrals page and earn 20% of every payment the people you bring make. They get 7 extra days, with the tool calls to match, on their first paid month. Earnings unlock 30 days after each payment and you claim them in USDC or USDT on Base once they reach $25.

Is any of this financial advice?

No. It returns market data and analysis, and nothing else. No recommendations, no trading signals, no order execution, no custody of funds. Every decision you make with it is your own.

Do I have to be technical to use it?

No. If you already use Claude or ChatGPT, connecting is one click and from then on you ask questions in plain English. Cursor, VS Code and custom agents take a key instead, which is one line of config.

Which clients does it work with?

Claude, ChatGPT, Cursor, VS Code, and anything else that speaks MCP over streamable HTTP. Claude and ChatGPT connect over OAuth. Everything else takes a Bearer key. No MCP client? The same tools are a REST API and a WebSocket API too.

Can I use it without MCP?

Yes. Every tool is also a REST resource under mcp.f1ow.com/v1 and a JSON-RPC method over a WebSocket at wss://mcp.f1ow.com/v1/ws, with the same key and the same balance. The WebSocket can subscribe to a tool and push only when its result changes. Both are described in OpenAPI and AsyncAPI specs.

What is an MCP server?

Model Context Protocol is the standard Claude and ChatGPT use to reach tools outside themselves. Point a client at one endpoint and every tool behind it becomes something the model can call on its own.

Where does the data come from?

Market, derivatives, on-chain, sentiment and catalyst data across all four levels, drawn from many vendors with several sitting behind most categories. Aggregated tools merge them and fail over between them rather than going down.

How fresh is it?

It depends on the tool. The order book caches for five seconds and quotes for thirty. Slower series hold longer. Every response carries generatedAt, so your agent can tell a live read from a cached one.

Something not answered here? Ask directly — a person replies.

@mcp_f1ow →

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Introduce them to f1ow and earn when they subscribe.

You
20% of every payment they make, paid in USDC or USDT.
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7 extra days with their first paid month, tool calls included.

Know the whole column before you go in.

$30 for a month. Set it up once, then send your agent down before a trade instead of finding out after one.

3-day free trial · 200 calls · no card·USDC or USDT