Crypto Derivatives Data: Perp Funding Rates, Open Interest, Basis, IV
Perp funding rates, open interest, futures basis, IV, liquidations, order books on 8 exchanges
Description from the maker (original English)
Machine-readable Japanese crypto-asset tax rules for AI agents: rules-as-code with citations, x402.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
You need
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcpRun this in your terminal
claude mcp add --transport http jp-crypto-tax-rules https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"jp-crypto-tax-rules": {
"url": "https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"jp-crypto-tax-rules": {
"type": "http",
"url": "https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
We have not read this server’s tool list yet; we check endpoints in rotation.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026
The registry name was verified with the GitHub account kodandy, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 5 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Crypto Derivatives Data: Perp Funding Rates, Open Interest, Basis, IV, Agent Data Tools: Prices and DeFi, Agent Data Tools: Chain data
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Perp funding rates, open interest, futures basis, IV, liquidations, order books on 8 exchanges
50 tools: token prices, wallet and contract risk, liquidity pools, FX. 25 free calls.
360 tools: balances, blocks, gas, txs and logs on 5 EVM chains, plus Bitcoin. 25 free calls.
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Remote MCP server exposing machine-readable rules-as-code for Japanese crypto-asset taxation to AI agents — structured rules with statutory citations, tax parameters, and the current-vs-2028-reform transition logic. Built from public sources only.
https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcpNot tax advice. This is general tax-system information served as structured rules with citations. It does not respond to individual circumstances and is not a substitute for advice from a licensed tax professional (税理士). Always verify against primary sources.
| Tool | Pricing | Returns |
|---|---|---|
list_tax_rules | Free | Rule catalog, filterable by category / taxpayer / tax_year (resolves the applicable epoch) |
get_tax_rule | Free | One rule in full: statement, exceptions, statutory citations, sources |
get_tax_parameters | Free | Tax-rate tables and thresholds with sources (income brackets, 20.315% breakdown, filing threshold) |
get_rule_pack | 0.05 USDC (x402) | Scenario-curated bundle: defi_staking, overseas_exchange, corporate_holding, transition_2028 |
The paid tool genuinely fulfills: a settled x402 payment returns the rule pack itself, not a placeholder.
claude mcp add --transport http jp-crypto-tax https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp
{
"mcpServers": { "jp-crypto-tax": { "type": "streamable-http", "url": "https://jp-crypto-tax-rules-62ko7b2uwa-an.a.run.app/mcp" } } }
No API key and no initialize handshake required. USDC on Base (testnet during the current private beta).
enacted_pending until the enforcement date is fixed.MIT