Skip to content
anlyon.devby Anlyon

Türkiye Central Bank (TCMB) Exchange Rates

io.github.foster-ops/tcmb-exchange-ratesfoster-opsstreamable-httpv1.0.0Scanned

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

4 tools: 1 do something that can't be undone and 3 only read.

Tools: 0 delete, 1 irreversible, 0 write, 3 read.
  • Reads private data · 0
  • Reads text others write · 0
  • Can send data out · 1
  • 1 finding

Anlyon alternative

1 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →
Compare with similar serversMarkdownJSONReport this listing

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

4 tools

Can't be undone 1Claude Code: ask
  • convert_currencyConverts an amount between two currencies using TCMB rates.Can send data out1 finding

    Why it is in this group

    • The name "convert_currency" says "convert": a word for a change.
    • The input addresses people (input.to): what it sends cannot be taken back.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.

    What it can reach

    • outboundThe input takes a destination (input.to): what the tool writes goes there.

    Findings

    • Warn

      The server marks "convert_currency" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "convert_currency" says "convert": a word for a change.

      What this check looks for
    Description, as the server wrote it
    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.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • destructiveHint: false
    • openWorldHint: false
Only reads 3Show 3 read-only tools
  • get_latest_ratesReturns the most recent TCMB exchange-rate bulletin (TRY per unit of foreign currency).No findings

    Why it is in this group

    • The name "get_latest_rates" says "get": a word for reading.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • destructiveHint: false
    • openWorldHint: false
  • get_rates_on_dateReturns the TCMB bulletin published on a given date (history back to 1996).No findings

    Why it is in this group

    • The name "get_rates_on_date" says "get": a word for reading.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • destructiveHint: false
    • openWorldHint: false
  • list_currenciesLists currencies in the latest TCMB bulletin with English/Turkish names, quoting unit and which rate types are published for each.No findings

    Why it is in this group

    • The name "list_currencies" says "list": a word for reading.
    Description, as the server wrote it
    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.

    Annotations the server declares

    • readOnlyHint: true
    • idempotentHint: true
    • destructiveHint: false
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

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

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0
Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
Can send data out1
Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warnconvert_currency

    The server marks "convert_currency" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "convert_currency" says "convert": a word for a change.

    What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http tcmb-exchange-rates https://foster-mcp.esakiz.workers.dev/mcp
claude mcp add --transport http tcmb-exchange-rates https://foster-mcp.esakiz.workers.dev/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__tcmb-exchange-rates__get_latest_rates",
      "mcp__tcmb-exchange-rates__get_rates_on_date",
      "mcp__tcmb-exchange-rates__list_currencies"
    ],
    "ask": [
      "mcp__tcmb-exchange-rates__convert_currency"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as tcmb-exchange-rates. Review it before you use it.

Capability tags behind 1 rule
  • mcp__tcmb-exchange-rates__convert_currency outbound

Pin

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/io.github.foster-ops/tcmb-exchange-rates/verify?hash=874a74403d1820238fc622a0591aa22ebb85b6b250a4b38797c37572b8f413cc" | jq -e '.changed == false'

Pinned hash 874a74403d18, from Oct 28, 2026, 21:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.foster-ops/tcmb-exchange-rates/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

anlyon.dev badge for io.github.foster-ops/tcmb-exchange-rates
[![anlyon.dev](https://anlyon.dev/badge/io.github.foster-ops/tcmb-exchange-rates.svg)](https://anlyon.dev/servers/io.github.foster-ops/tcmb-exchange-rates)

Source: MCP Registry. Synced Oct 28, 2026, 21:17 UTC.