# Crypto prices and ZEC ETF flows

> Live USD prices for the top 100 cryptocurrencies, plus a daily BUY/HOLD/SELL signal for Zcash.

- name: pro.megahard/coins
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 100/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/pro.megahard%2Fcoins
- tools: https://api.protogrid.dev/v1/servers/pro.megahard%2Fcoins/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "coins": {
      "type": "http",
      "url": "https://coins.megahard.pro/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 98
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-95% +updated-16d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 100/100 (strong)

### protocol: 100 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- pass `protocol.list_ttl`: tool list is cacheable (ttlMs 3600000)

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 100 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 3 of 3 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 698 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump
- pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name
- pass `stability.new_links`: no tool change named a new site

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 3, about 698 tokens to load them all
- tool set hash: 01c351299242f6e53fcd2fd8b7aae906
- badge: [![protogrid quality](https://protogrid.dev/badge/pro.megahard/coins.svg)](https://protogrid.dev/servers/pro.megahard/coins)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://coins.megahard.pro/mcp (streamable-http, auth none, reachable true, uptime30d 0.9508197)

## Packages

_none_

## Tools (3)

- `get_crypto_prices`: Live USD prices for the top 100 cryptocurrencies by market cap: rank, name, symbol, price, 1h / 24h / 7d percent change, market cap and 24h volume. Data from CoinGecko, at most about 60 s old. Pass symbols (tickers like "btc", or CoinGecko ids / names like "ethereum") for specific coins, or omit them for the top N by market cap. Coins outside the top 100 are not available.
- `get_zec_etf_history`: Daily history of the ZEC ETF flows indicator, oldest day first: the signal and score, the BUY / SELL thresholds in force, and per day the net ETF flow in ZEC and USD, 5-day flow, flow streak, ETF holdings and AUM, premium to NAV and the ZEC price. History starts on 2026-09-07. Optionally adds each day's component scores and rationale. Informational only, not investment advice.
- `get_zec_etf_signal`: The current ZEC ETF flows indicator: a daily BUY / HOLD / SELL signal for Zcash built from creations and redemptions in US spot Zcash ETFs (Grayscale ZCSH), scored together with premium to NAV, derivatives leverage and funding, spot taker imbalance, open interest trend, shielded pool growth, volume share, SEC EDGAR filings and the price regime. Returns the signal, total score, each component's score and reason, the raw inputs, an LLM-written rationale (it may only downgrade the computed signal), the tracked funds and recent classified filings. Recomputed once a day after the US close; "stale" is true when the ETF data is more than two business days old. Informational only, not investment advice.