Canada FX & Policy Rates MCP
io.github.donniertf-hub/ca-fx-rates-mcpdonniertf-hubstreamable-httpv1.1.0Scanned
Bank of Canada FX rates, overnight target, prime, mortgage rates and bond yields.
8 tools: 2 do something that can't be undone and 6 change things.
- Reads private data · 0
- Reads text others write · 0
- Can send data out · 2
- No findings
Tools listed without sign-in. Remote posture
Anlyon alternative
8 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 →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.
8 tools
Can't be undone 2Claude Code: ask
convertPRO.Can send data outNo findings
Why it is in this group
- The name "convert" says "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
What it can reach
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Description, as the server wrote it PRO. Convert an amount between CAD and another currency using the latest BoC daily average rate.
global_fx_convertPRO ($0.01/call via x402).Can send data outNo findings
Why it is in this group
- The name "global_fx_convert" says "convert": a word for a change.
- The input addresses people (input.to): what it sends cannot be taken back.
What it can reach
- outboundThe input takes a destination (input.to): what the tool writes goes there.
Description, as the server wrote it PRO ($0.01/call via x402). Convert an amount between any two major currencies at the latest or a given historical end-of-day rate (date YYYY-MM-DD, back to 1999).
Changes things 6Claude Code: ask
ecb_reference_ratesPRO ($0.01/call via x402).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it PRO ($0.01/call via x402). Official ECB euro reference rates (~14:10 CET concertation, published ~16:00 CET) straight from the ECB Data Portal for up to 20 currencies, last 1-30 business days.
fx_rateFREE.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it FREE. Latest Bank of Canada daily average exchange rate for a currency vs CAD (e.g. USD, EUR, GBP, JPY). Pass the 3-letter ISO code.
fx_tablePRO.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it PRO. Latest Bank of Canada daily FX rates for major currencies vs CAD.
global_fx_rateFREE.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it FREE. Global end-of-day FX rate between any two of ~30 major currencies (e.g. USD to EUR, GBP to JPY). Source: Frankfurter / ECB reference rates.
global_fx_timeseriesPRO ($0.01/call via x402).No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it PRO ($0.01/call via x402). Daily end-of-day FX time series for a base currency vs up to 10 quote currencies between two dates (max 366 days).
policy_ratesPRO.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
Description, as the server wrote it PRO. Bank of Canada overnight target, prime rate, 5-year conventional mortgage rate and 2-year / 10-year Government of Canada bond yields.
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 out2
- 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.
Remote posture
What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.
Looked at Oct 29, 2026, 22:25 UTC, unchanged since Oct 29, 2026. No credentials were sent and no tool was called. What is looked at.
- Reachable
- yes
- HTTP status of an anonymous initialize
- 200
- tools/list served without credentials
- yes
- Tools that change things, listed without credentials
- 8
- Protocol version
- 2025-06-18
- WWW-Authenticate on 401
- not observed
- resource_metadata in WWW-Authenticate
- not observed
- RFC 9728 protected resource metadata
- not observed
- Authorization servers
- not observed
- Legacy HTTP+SSE transport
- no
- Dynamic client registration
- not observed
- Client ID metadata documents
- not observed
- HighThe whole server
The endpoint served tools/list without credentials, and the list has 8 tools that change things (2 irreversible, 6 write). Whether a call also works without credentials was not tested: tools are never called.
What this check looks forMatched text
https://ca-fx-rates-mcp.donniertf.workers.dev/mcp: tools/list returned 8 tools to an anonymous client, including convert (irreversible), global_fx_convert (irreversible), fx_rate (write), fx_table (write), policy_rates (write) and 3 more
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
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.
Install
Pinned to version 1.1.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http ca-fx-rates https://ca-fx-rates-mcp.donniertf.workers.dev/mcpclaude mcp add --transport http ca-fx-rates https://ca-fx-rates-mcp.donniertf.workers.dev/mcpRun 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.
{
"permissions": {
"allow": [],
"ask": [
"mcp__ca-fx-rates__fx_rate",
"mcp__ca-fx-rates__convert",
"mcp__ca-fx-rates__fx_table",
"mcp__ca-fx-rates__policy_rates",
"mcp__ca-fx-rates__global_fx_rate",
"mcp__ca-fx-rates__global_fx_convert",
"mcp__ca-fx-rates__global_fx_timeseries",
"mcp__ca-fx-rates__ecb_reference_rates"
],
"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 ca-fx-rates. Review it before you use it.
Capability tags behind 2 rules
- mcp__ca-fx-rates__convert outbound
- mcp__ca-fx-rates__global_fx_convert 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.donniertf-hub/ca-fx-rates-mcp/verify?hash=f30b7f6bd4f4b7db2ed026e19c36230303b7168d28a25398c411da2ab9eedc0a" | jq -e '.changed == false'Pinned hash f30b7f6bd4f4, from Oct 29, 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.donniertf-hub/ca-fx-rates-mcp/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/io.github.donniertf-hub/ca-fx-rates-mcp)Source: MCP Registry · repository. Synced Oct 29, 2026, 22:17 UTC.