# Türkiye Central Bank (TCMB) Exchange Rates

> Unofficial access to CBRT/TCMB daily exchange rates: latest, history since 1996, conversion.

- name: io.github.foster-ops/tcmb-exchange-rates
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 79/100 flags: no-repository
- quality: 96/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.foster-ops%2Ftcmb-exchange-rates
- tools: https://api.protogrid.dev/v1/servers/io.github.foster-ops%2Ftcmb-exchange-rates/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "tcmb-exchange-rates": {
      "type": "http",
      "url": "https://foster-mcp.esakiz.workers.dev/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 99
- freshness: 100
- provenance: 45
- drivers: +website +reachable +uptime-97% +updated-10d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 96/100 (strong)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### 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`: 4 of 4 tools declare readOnlyHint or destructiveHint
- pass `tools.directory_hints`: every tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
- pass `tools.token_cost`: about 977 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: 4, about 977 tokens to load them all
- tool set hash: 0414be56004e8f55684a867d5a6b7b95
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.foster-ops/tcmb-exchange-rates.svg)](https://protogrid.dev/servers/io.github.foster-ops/tcmb-exchange-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://foster-mcp.esakiz.workers.dev/mcp (streamable-http, auth none, reachable true, uptime30d 0.974359)

## Packages

_none_

## Tools (4)

- `convert_currency`: Converts an amount between two currencies using TCMB rates. TRY may be either side. Cross conversions (e.g. USD to EUR) go through TRY using the same rate_type on both legs. Returns the result (6 decimals), the effective rate and a calculation breakdown. Omit date for the latest bulletin. Source: Central Bank of the Republic of Türkiye (CBRT/TCMB) daily indicative bulletin, published on business days around 15:30 Türkiye time (UTC+3). Rates are TRY per `unit` of currency (JPY is per 100). Decimals are strings. Every result includes source_url, bulletin_date and a disclaimer; rates are indicative, not for official use.
- `get_latest_rates`: Returns the most recent TCMB exchange-rate bulletin (TRY per unit of foreign currency). Source: Central Bank of the Republic of Türkiye (CBRT/TCMB) daily indicative bulletin, published on business days around 15:30 Türkiye time (UTC+3). Rates are TRY per `unit` of currency (JPY is per 100). Decimals are strings. Every result includes source_url, bulletin_date and a disclaimer; rates are indicative, not for official use.
- `get_rates_on_date`: Returns the TCMB bulletin published on a given date (history back to 1996). If no bulletin was published that day (weekend, holiday, or today before ~15:30 TRT), returns the previous bulletin with is_fallback=true and a fallback_reason. Bulletins before 2005-01-01 are in old Turkish lira (domestic_currency TRL). Source: Central Bank of the Republic of Türkiye (CBRT/TCMB) daily indicative bulletin, published on business days around 15:30 Türkiye time (UTC+3). Rates are TRY per `unit` of currency (JPY is per 100). Decimals are strings. Every result includes source_url, bulletin_date and a disclaimer; rates are indicative, not for official use.
- `list_currencies`: Lists currencies in the latest TCMB bulletin with English/Turkish names, quoting unit and which rate types are published for each. Use it to check codes before calling the other tools.