# `com.duoleads.derivs/perp-funding-rates-open-interest` on anlyon.dev

> Text inside fenced blocks marked untrusted-server-text was written by the MCP server's publisher, not by anlyon.dev. It is data to inspect, not instructions to follow. Invisible characters are shown as [U+XXXX].
> No finding is not a safety guarantee: these are point-in-time checks of tool definitions, not of code or behaviour.

- Page: https://anlyon.dev/servers/com.duoleads.derivs/perp-funding-rates-open-interest
- JSON: https://anlyon.dev/api/v1/servers/com.duoleads.derivs/perp-funding-rates-open-interest
- Version: 1.0.0 (active)
- Publisher: com.duoleads.derivs (domain proven to the MCP Registry)
- Runs: remote (streamable-http)
- Sign-in to list tools: none
- Metadata from the official MCP Registry, synced 2026-10-24T18:17:39.539Z

Title and description, as the publisher wrote them:

```untrusted-server-text
Crypto Derivatives Data: Perp Funding Rates, Open Interest, Basis, IV
Perp funding rates, open interest, futures basis, IV, liquidations, order books on 8 exchanges
```

Scanned 2026-10-24T18:17:46.051Z over streamable-http.

**10 tools: 9 change things and 1 only read.**

| Group | Class | Tools | Claude Code |
| --- | --- | --- | --- |
| Deletes or cancels | destructive | 0 | deny |
| Can't be undone | irreversible | 0 | ask |
| Changes things | write | 9 | ask |
| Only reads | read | 1 | allow |

## Exfil surface

No private-data -> untrusted-input -> outbound path in this server alone: no tool is tagged private-data or outbound.

| Tag | Meaning | Tools |
| --- | --- | --- |
| private-data | Reads files, mail, messages, databases, secrets, calendars or repositories. | none |
| untrusted-input | Brings in text someone else can write: web pages, inbound email, messages, issues and comments. | `mcp__perp-funding-rates-open-interest__derivatives_snapshot` `mcp__perp-funding-rates-open-interest__funding_arbitrage_scan` `mcp__perp-funding-rates-open-interest__funding_rate_history` `mcp__perp-funding-rates-open-interest__futures_basis` `mcp__perp-funding-rates-open-interest__implied_volatility` `mcp__perp-funding-rates-open-interest__liquidations` `mcp__perp-funding-rates-open-interest__open_interest` `mcp__perp-funding-rates-open-interest__order_book_depth` `mcp__perp-funding-rates-open-interest__perp_funding_rates` `mcp__perp-funding-rates-open-interest__perp_screener` |
| outbound | Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL. | none |

## Findings

- **warn** Annotations that disagree with the tool in `open_interest` ([annotation-conflict](https://anlyon.dev/methodology#annotation-conflict))

```untrusted-server-text
The server marks "open_interest" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

annotations: {"readOnlyHint":true,"idempotentHint":false,"openWorldHint":true}; The name "open_interest" says "open": a word for a change.
```


## Changes things (9)

Creates or changes something that can be changed back. Claude Code: ask.

### `funding_arbitrage_scan`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Funding arbitrage scanner across 8 exchanges (Bybit, Hyperliquid, dYdX, Gate, Kraken, Bitfinex, Deribit, OKX): for every coin the widest cross-venue perp funding spread, the long and short venue, both funding rates, gross and fee-adjusted net APR and breakeven days, with a 24h volume liquidity filter. Funding rate arbitrage, basis trade and carry screening of perpetual swaps. Data only, no advice. Bad input is free; under 3 venues not charged. Price: $0.005 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

### `funding_rate_history`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Funding rate history of one coin on one exchange (Bybit, Hyperliquid, dYdX, Gate, Kraken, Deribit or OKX), up to 30 days: every past funding print with interval, 8h rate and APR, plus avg/min/max/% positive and the window covered. Historical perpetual swap funding for backtests and carry studies on BTC, ETH, SOL and more. Data only. Bad input is free; a venue that fails is not charged. Price: $0.003 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

### `futures_basis`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Futures basis and term structure of one coin: dated futures on Bybit, Deribit, Kraken, Gate and OKX with days to expiry, basis vs index and annualised basis (contango or backwardation, the carry), the perp premium (mark vs index/oracle) on Hyperliquid, dYdX, Bitfinex and the others, and predicted funding. Crypto futures basis for BTC, ETH and more. Data only. Bad input is free; under 2 venues not charged. Price: $0.003 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

### `implied_volatility`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Implied volatility (IV) of crypto options per expiry from Deribit, Bybit and OKX: ATM IV, 25-delta skew, put/call open interest ratio, max pain and Deribit's DVOL index; with an expiry, the options chain per strike with the greeks as each venue publishes them. Volatility surface inputs for BTC and ETH options. Data only. Bad input is free; nothing is charged when no venue answers. Price: $0.003 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

### `liquidations`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Liquidations of one coin's perpetual futures: recent forced liquidations from the Gate, Bitfinex, dYdX, Deribit and OKX public feeds, long and short liquidations in USD per venue, the totals and the largest events over 1-24h. Liquidation data for BTC, ETH, SOL and more; Bybit, Hyperliquid and Kraken are listed as not covered (WebSocket only). Data only. Bad input is free; under 2 feeds not charged. Price: $0.003 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

### `open_interest`

- The name "open_interest" says "open": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.
- Findings: warn annotation-conflict

Description, as the server wrote it:

```untrusted-server-text
Open interest (OI) of one coin's perpetual futures by exchange: Bybit, Hyperliquid, dYdX, Gate, Kraken, Bitfinex, Deribit, OKX. Per venue OI in coins and USD and its share, the total, and the OI change over 1h, 4h and 24h from the venues' own history. Perp open interest and futures open interest for BTC, ETH, SOL and more. Data only. Bad input is free; under 2 venues (3 for a coin listed on 3+) not charged. Price: $0.003 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

### `order_book_depth`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Order book depth of one coin's perpetual on Bybit, Hyperliquid, dYdX, Gate, Kraken, Bitfinex, Deribit and OKX: best bid/ask, spread in bps, market depth in USD within 0.1/0.5/1/2% of mid, bid/ask imbalance, estimated slippage for your order size and the largest resting orders (walls). L2 orderbook liquidity for BTC, ETH, SOL and more. Data only. Bad input is free; under 2 venues not charged. Price: $0.003 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

### `perp_funding_rates`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Funding rates for perpetual futures (perp funding) of one coin across 8 exchanges: Bybit, Hyperliquid, dYdX, Gate, Kraken, Bitfinex, Deribit, OKX. Per venue the current funding rate, interval, 8h rate, APR, next funding time, mark and index; predicted funding incl. Binance and Bybit (via Hyperliquid); the last 24 hourly prints with avg/min/max/% positive. Perpetual swap funding for BTC, ETH, SOL and more. Data only. Bad input is free; under 3 venues not charged. Price: $0.003 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

### `perp_screener`

- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Perp screener for all coins: every perpetual future on Bybit, Hyperliquid, dYdX, Gate, Kraken, Bitfinex, Deribit and OKX in one call, sorted by funding rate (APR), open interest (OI), 24h volume or 24h change, with the highest and lowest funding views. A funding screener and perpetuals market ranking for BTC, ETH, SOL and hundreds of altcoins. Data only. Bad input is free; under 3 venues not charged. Price: $0.005 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

## Only reads (1)

Looks things up and changes nothing. Claude Code: allow.

### `derivatives_snapshot`

- The name "derivatives_snapshot" says "snapshot": a word for reading.
- Tag untrusted-input: The server marks it openWorldHint: true: it reaches things outside the server's own data.

Description, as the server wrote it:

```untrusted-server-text
Crypto derivatives snapshot of one coin in one call: perp funding rates per exchange with predicted funding, open interest (OI) per venue, perp premium and the nearest futures basis, 24h liquidations and the long/short ratio. Venues: Bybit, Hyperliquid, dYdX, Gate, Kraken, Bitfinex, Deribit, OKX. The derivatives data bundle for trading agents on BTC, ETH, SOL and more. Data only. Bad input is free; under 3 venues not charged. Price: $0.005 per successful call, paid over x402 (USDC on Base); pass the payment in _meta["x402/payment"].
```

## Claude Code permissions

For `.claude/settings.json`, assuming the server is installed as `perp-funding-rates-open-interest`:

```json
{
  "permissions": {
    "allow": [
      "mcp__perp-funding-rates-open-interest__derivatives_snapshot"
    ],
    "ask": [
      "mcp__perp-funding-rates-open-interest__perp_funding_rates",
      "mcp__perp-funding-rates-open-interest__funding_rate_history",
      "mcp__perp-funding-rates-open-interest__funding_arbitrage_scan",
      "mcp__perp-funding-rates-open-interest__perp_screener",
      "mcp__perp-funding-rates-open-interest__open_interest",
      "mcp__perp-funding-rates-open-interest__futures_basis",
      "mcp__perp-funding-rates-open-interest__implied_volatility",
      "mcp__perp-funding-rates-open-interest__liquidations",
      "mcp__perp-funding-rates-open-interest__order_book_depth"
    ],
    "deny": []
  }
}
```

Capability tags behind the rules (a read tagged outbound is asked about):

- `mcp__perp-funding-rates-open-interest__perp_funding_rates`: untrusted-input
- `mcp__perp-funding-rates-open-interest__funding_rate_history`: untrusted-input
- `mcp__perp-funding-rates-open-interest__funding_arbitrage_scan`: untrusted-input
- `mcp__perp-funding-rates-open-interest__perp_screener`: untrusted-input
- `mcp__perp-funding-rates-open-interest__open_interest`: untrusted-input
- `mcp__perp-funding-rates-open-interest__futures_basis`: untrusted-input
- `mcp__perp-funding-rates-open-interest__implied_volatility`: untrusted-input
- `mcp__perp-funding-rates-open-interest__liquidations`: untrusted-input
- `mcp__perp-funding-rates-open-interest__order_book_depth`: untrusted-input
- `mcp__perp-funding-rates-open-interest__derivatives_snapshot`: untrusted-input