# Currency Rates (ECB)

> Latest and historical ECB foreign-exchange reference rates for 30+ currencies, via Frankfurter.

- name: com.invokera/currency-rates
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 79/100 flags: no-repository
- quality: 85/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/com.invokera%2Fcurrency-rates
- tools: https://api.protogrid.dev/v1/servers/com.invokera%2Fcurrency-rates/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "currency-rates": {
      "type": "http",
      "url": "https://invokera.com/r/currency-rates"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 99
- freshness: 85
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-98% ~updated-77d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 85/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### 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: 86 (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
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_latest_rates (idempotentHint, openWorldHint); get_currencies (idempotentHint, openWorldHint); get_historical_rates (idempotentHint, openWorldHint)
- pass `tools.token_cost`: about 387 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### 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

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

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

- tools: 3, about 387 tokens to load them all
- tool set hash: 9e38ff7ea31dda340d601ce516fe2f82
- badge: [![protogrid quality](https://protogrid.dev/badge/com.invokera/currency-rates.svg)](https://protogrid.dev/servers/com.invokera/currency-rates)
- 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://invokera.com/r/currency-rates (streamable-http, auth none, reachable true, uptime30d 0.9830508)

## Packages

_none_

## Tools (3)

- `get_currencies`: List all supported currencies. Returns every supported ISO 4217 currency code with its full English name. Returns: Map of currency code to currency name..
- `get_historical_rates`: Get exchange rates for a past date. Returns the ECB reference rates that were published on (or nearest before) the given date. Returns: Historical reference rates for the requested date..
- `get_latest_rates`: Get the latest exchange rates. Returns the most recent ECB reference rates. The base currency defaults to EUR unless "base" is given. Returns: Latest reference rates keyed by currency code..