Cryptoetf

io.github.sly13Published by GitHub account sly13v1.0.12Updated Oct 25, 2026

Live spot crypto ETF flows for 16 assets and their funds, CEFI index and prices.

VerifiedStreamable HTTPWeb executableFinanceData & Analytics

Overview

AI-generated overview

Read-only market data on US spot crypto ETF flows, fund assets, holdings, staking, issuer revenue and coin prices for 16 crypto assets.

What you can do
Get latest-day and 30-day net ETF flows per asset, and fund-by-fund flows with ticker and issuer for one asset or all 16 assets at once, plus a 7-day analytics summary per asset and the composite CEFI flow index with its components. Look up the fund directory with issuer, fee, listing date, net assets and coins held, plus ETF coin holdings and their share of circulating supply. Compare Bitcoin ETF net creations against newly mined bitcoin over several windows, and estimate sponsor fee revenue per fund. Check staking status and details from SEC filings, and estimate ETF holders' average cost basis and unrealised P&L. Read current spot prices and 24-hour change for the tracked assets.
When to use it
Useful when an assistant needs current or recent US spot crypto ETF flow, holdings, fee or staking figures, for example to compare BTC and ETH flows, find the strongest weekly inflows, or check the CEFI index. Not needed for trading, order execution or long history beyond 30 days.
Requirements
A remote Streamable HTTP endpoint that needs no account or API key; the npm bridge package runs locally on Node.js 18 or newer for stdio-only clients. Optional environment variables CRYPTOETF_MCP_URL and CRYPTOETF_API_KEY exist for pointing the bridge elsewhere or authenticating. Network access is required.
Before you install
Read-only market data, not investment advice. The bridge sends only the tool name and its arguments to the hosted service, which logs IP address, timestamp and endpoint and keeps a per-IP rate-limit counter (60 requests per minute); logs are retained 30 days. No accounts or personal profiles are created.

Installation

In SourceWeft

  1. Open Cryptoetf in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.sly13%2Fcryptoetf/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "cryptoetf": {
      "type": "http",
      "url": "https://mcp.cryptoetf.today/api/mcp"
    }
  }
}

README

CryptoETF MCP — spot crypto ETF flows for AI agents

[npm] [npm downloads] [MCP Registry]

The Model Context Protocol surface of cryptoetf.today: daily net flows for every US-listed spot crypto ETF complex and every fund in it, fund AUM, the CEFI sentiment index and live coin prices — for Claude, Cursor, Codex, Gemini CLI and any other MCP-capable agent.

Sixteen assets: BTC, ETH, SOL, XRP, HYPE, DOGE, LINK, AVAX, HBAR, LTC, BNB, DOT, SUI, NEAR, TRX, ZEC. Flow figures are net USD millions, sourced from the issuers' own daily reports; for the eleven smaller complexes there is no market-wide aggregator, so the numbers are computed from each issuer's fund pages.

You probably don't need to install anything. The server is hosted, and every client that speaks remote MCP can reach it directly:

https://mcp.cryptoetf.today/api/mcp     Streamable HTTP · JSON-RPC 2.0

No API key, no account — the endpoint is open.

Setup per client

Claude Code — one command, no restart:

bash
claude mcp add --transport http cryptoetf https://mcp.cryptoetf.today/api/mcp

Cursor — .cursor/mcp.json (project) or ~/.cursor/mcp.json (global):

json
{  "mcpServers": {    "cryptoetf": { "url": "https://mcp.cryptoetf.today/api/mcp" }  }}

Claude Desktop and other stdio-only clients — this package is the bridge. claude_desktop_config.json, then restart the app fully:

json
{  "mcpServers": {    "cryptoetf": {      "command": "npx",      "args": ["-y", "@zerosix-studio/cryptoetf-mcp"]    }  }}

Nothing to install by hand: npx fetches the package on first run. It has zero dependencies and simply forwards JSON-RPC between stdin/stdout and the hosted endpoint.

Tools

ToolWhat it returns
get_flows_summaryLatest-day net flow for all 16 assets, with the date each figure belongs to
get_asset_flowsDaily net flow history for one asset over the last 30 days
get_fund_flowsThe same 30 days for one asset, fund by fund (IBIT, FBTC, ETHA…), with ticker and issuer
get_fundsFund directory: issuer, fee, listing date, current net assets (AUM) and coins held
get_weekly_analytics7-day totals per asset: net flow, average day, positive/negative day counts
get_cefi_indexComposite CEFI index (0–100, 50 = zero net flow) with its flow, trend and breadth components
get_pricesSpot price and 24h change for every tracked asset

History reaches back 30 days, in the tools and in the REST API alike. Longer history is on cryptoetf.today.

Ask it things like

  • "What are today's crypto ETF flows?"
  • "Compare BTC and ETH ETF flows over the past month"
  • "Which asset had the strongest week of inflows?"
  • "Is the CEFI index bullish right now?"

Configuration

VariableDefaultPurpose
CRYPTOETF_MCP_URLhttps://mcp.cryptoetf.today/api/mcpPoint the bridge at another endpoint
CRYPTOETF_API_KEY—Sent as Authorization: Bearer … when set; the public endpoint does not need it

Requires Node.js 18 or newer.

Data and limits

Flow data is updated every business day as issuers publish. Figures are informational — this is market data, not investment advice.

Privacy Policy

Full policy: cryptoetf.today/en/privacy.

What is collected. The bridge forwards your JSON-RPC requests to https://mcp.cryptoetf.today/api/mcp and returns the responses. The only request data that leaves your machine is the tool name and its arguments (an asset ticker, at most). Conversation content, files and credentials are never read or transmitted.

How it is used and stored. The server logs the standard request metadata of any web service — IP address, timestamp, endpoint — and keeps a per-IP counter in Redis to enforce the 60 requests/minute rate limit. Logs are retained for 30 days and are used only to operate and protect the service.

Third-party sharing. None. Request data is not sold, shared or passed to any third party. The service is operated by us and calls only our own API.

Retention. Rate-limit counters expire within a minute; request logs within 30 days. No user accounts and no personal profiles exist — the endpoint is open and unauthenticated.

Contact. github.com/zerosix-studio/cryptoetf-mcp/issues or the contact form at cryptoetf.today.

Releasing

Bump the version in package.json, then tag the commit:

bash
git tag v1.0.4 && git push --tags

The Publish to npm workflow runs the bridge against the live server, skips the publish if that version is already in the registry, and otherwise pushes it with provenance — the npm page then links back to the exact workflow run and commit the tarball was built from.

MIT licensed.

Source: README.md at commit 6619dbc

Tools

12

get_flows_summary

Latest Crypto ETF Flows

Get the latest-day net ETF inflow/outflow (USD millions) for every tracked crypto asset: BTC (Bitcoin), ETH (Ethereum), SOL (Solana), XRP, HYP (Hyperliquid), DOGE (Dogecoin), LINK (Chainlink), AVAX (Avalanche), HBAR (Hedera), LTC (Litecoin), BNB, DOT (Polkadot), SUI, NEAR, TRX (TRON) and ZEC (Zcash). Positive = inflow, negative = outflow. Flows are published one business day in arrears, so `referenceIsToday` is normally false: the figures belong to `referenceDate`, the last trading day published, not to the current date. On Mondays the freshest data is Friday's. `totalUsdM` is the sum across all assets. Figures are asset-level totals; the per-fund breakdown (IBIT, FBTC, ETHA and others) is returned by get_fund_flows, net assets by get_funds.

Takes no parameters.

get_asset_flows

Crypto ETF Flow History

Get daily net ETF flow history for a single crypto asset over the last 30 days. Returns a time series of net USD millions per day (positive = inflow, negative = outflow). Figures are asset-level totals; the per-fund breakdown (IBIT, FBTC, ETHA and others) is returned by get_fund_flows.

Parametersassetrequired

get_fund_flows

Crypto ETF Flows by Fund

Get daily net flows of every spot ETF on one crypto asset, fund by fund (IBIT, FBTC, ETHA, …), over the last 30 days. Each trading day lists the funds trading that day with ticker, issuer and net USD millions (positive = inflow, negative = outflow), plus `totalUsdM` for the day. `netFlowUsdM` is null when there is no figure for the fund that day, usually because it has not reported yet; 0 means no creations or redemptions. Flows are published one business day in arrears.

Parametersassetrequired

get_funds

Crypto ETF Fund Directory

Get the US spot crypto ETFs that have started trading, for one asset or all 16: ticker, name, issuer, exchange, listing date, sponsor fee (percent per year), current net assets (`netAssetsUsdM`, USD millions) and coins held, plus the total net assets of each asset. Net assets are a current snapshot, not a history. `netAssetsBasis` is reported (published by the issuer for `netAssetsDate`), repriced (the latest published figure moved to that day by the NAV change of other funds) or estimated (coins times price, for issuers without daily holdings). `coinsHeld` is null for issuers that do not publish holdings in coins. Each fund also has `effectiveFeePct` and `feeWaiver` (a fee waiver in effect today), `feeRevenueUsdMPerYear` (net assets times the fee charged today, USD millions), `supplySharePct` (its coins as a share of circulating supply), `staking` (status from SEC filings, share staked, net yield and how rewards are paid) and `delistedAt` for a closed fund.

Parametersasset

get_cefi_index

CEFI Sentiment Index

Returns the composite CEFI (Crypto ETF Flow Index): a 0–100 index of money moving through US spot crypto ETFs on all 16 tracked assets. Net flows of all funds are added up in dollars, and three components are scored against the past year: flow (today's net flow, smoothed, 40%), trend (net flow over 20 trading days, 30%) and breadth (share of funds with inflows, 30%). 50 = zero net flow; a typical inflow day scores about 69, a typical outflow day about 31. Each component is on the same 0–100 scale. Zones: 0–20 extreme fear, 20–40 fear, 40–60 neutral, 60–80 greed, 80–100 extreme greed.

Takes no parameters.

get_prices

Crypto Spot Prices

Get current spot prices (USD) and 24-hour percentage change for all 16 tracked crypto assets: BTC, ETH, SOL, XRP, HYP, DOGE, LINK, AVAX, HBAR, LTC, BNB, DOT, SUI, NEAR, TRX, ZEC. Prices are sourced from major exchanges and refreshed frequently.

Takes no parameters.

get_weekly_analytics

Weekly ETF Flow Analytics

Get 7-day aggregated ETF flow analytics for all tracked assets. Returns total net flow, the number of trading days in the window, average flow per trading day, and count of positive vs negative days per asset. Weekends are excluded. A compact momentum summary without the full daily series.

Takes no parameters.

get_etf_holdings

Crypto Held by ETFs

Get the coins held in trust by US spot crypto ETFs for one asset or all 16, and the share of the coin's circulating supply they represent (`supplyPct`, percent). Per fund: coins held, share of the asset's ETF coins and `coinsBasis` — reported (published by the issuer, or shares times the published coins per share) or estimated (net assets per share at the same-day coin price, for issuers that do not publish coins). Includes 7- and 30-day changes in coins and the last 30 days of daily history.

Parametersasset

get_btc_etf_vs_miners

Bitcoin ETFs vs Miners

Get net creations of US spot Bitcoin ETFs in BTC against newly mined bitcoin. Windows: the last full week (Monday to Sunday), 30 days, year to date and since launch (11 Jan 2024), each with ETF net BTC, mined BTC and their ratio (null when ETFs had net outflows). Also the number of consecutive full weeks with ETF demand above new supply and the last 12 weeks. ETF BTC is the daily USD net flow divided by the volume-weighted bitcoin price of that day; mined BTC is the block subsidy times blocks between midnights UTC.

Takes no parameters.

get_issuer_revenue

Crypto ETF Issuer Fee Revenue

Get estimated sponsor fee revenue of US spot crypto ETFs: net assets times the prospectus sponsor fee, with temporary fee waivers applied. Per fund: net assets, nominal and effective fee (percent per year), revenue per day and annualised at current assets, and the sum for the last 30 days where a daily series exists. Totals by issuer and for the whole market. Arithmetic on the published fee, not the issuer's reported revenue; the sponsor's share of staking rewards is not included.

Parametersasset

get_staking

Staking Inside Crypto ETFs

Get the staking status of US spot crypto ETFs: active, allowed_not_started, pending_amendment, no, not_stakeable (proof-of-work assets and XRP) or unknown, from SEC filings. For staking funds: cap and share of assets staked, the staking yield as disclosed by the issuer with its date, providers, whether rewards are kept in the fund or paid in cash, the last cash payout per share, and `coinsPerShare` — the annualised growth of coins behind each share from daily issuer snapshots (shown only where the series is clean). Per asset: funds staking and the estimated coins staked.

Parametersasset

get_cost_basis

ETF Holders Average Entry Price

Get the estimated average entry price per coin of US spot crypto ETF holders for one asset or all 16: coins accumulated through net flows, money invested, average entry, the latest coin price and unrealised P&L. Also how many consecutive days holders have been above or below their entry and since when. The entry is built from daily creations and redemptions valued at the volume-weighted price of each day; coins of converted trusts (GBTC, ETHE) are not included.

Parametersasset

Version history

3
  1. v1.0.12LatestOct 16, 2026
  2. v1.0.11Oct 3, 2026
  3. v1.0.3Sep 16, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts