Currency ConversionBLOCK
A currency conversion MCP server
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
An MCP server that provides real-time currency conversion and exchange rate data using the Frankfurter API.
Using
URL base is https://currency-mcp.wesbos.com
There are two endpoints - /mcp for streamable HTTP and /sse for legacy HTTP+SSE.
Right now many clients do not offer support for streamable http, so you can use it with a proxy:
{
"mcpServers": {
"currency-conversion": {
"command": "npx",
"args": ["mcp-remote", "https://currency-mcp.wesbos.com/sse"]
}
},
}Available Tools
convert_currency
Convert an amount from one currency to another.
Parameters:
from(string): Source currency code (3 letters, e.g., "USD", "EUR")to(string): Target currency code (3 letters, e.g., "USD", "EUR")amount(number): Amount to convert (positive number)
Example: Convert 100 USD to EUR
{
"from": "USD",
"to": "EUR",
"amount": 100
}get_latest_rates
Fetch the latest exchange rates.
Parameters:
base(string, optional): Base currency code (defaults to EUR)symbols(string, optional): Comma-separated currency codes to limit results
Example: Get USD rates for specific currencies
{
"base": "USD",
"symbols": "EUR,GBP,JPY"
}get_currencies
List all available currencies with their full names.
Parameters: None
get_historical_rates
Get historical exchange rates for a specific date.
Parameters:
date(string): Date in YYYY-MM-DD formatbase(string, optional): Base currency code (defaults to EUR)symbols(string, optional): Comma-separated currency codes to limit results
Example: Get historical EUR rates for January 1, 2024
{
"date": "2024-01-01",
"base": "EUR",
"symbols": "USD,GBP"
}Data Source
Exchange rate data is provided by the [Frankfurter API](https://fran
c23cf3f01fbcOBSERVED · 2026-10-08Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.
claude mcp add remote-mcp-server-authless -- npx -y [email protected]
{
"mcpServers": {
"remote-mcp-server-authless": {
"command": "npx",
"args": [
"-y",
"[email protected]"
]
}
}
}Exposed tools (4)
4 read · 0 write · 0 destructive.
| Tool | Risk | Description |
|---|---|---|
convert_currency | read | |
get_currencies | read | |
get_historical_rates | read | |
get_latest_rates | read |
Trust audit
BLOCKgrade D · trust 69/100 Do not install this without reading the findings. The audit found something that could harm you or your machine.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | FAIL |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | PASS |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- none-observed
- Network
- declared (5 observation(s))
- Shell
- declared (2 observation(s))
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (6)
exec(input?: (string | URLPatternInit), baseURL?: string): URLPatternResult | null;
exec(query: string): Promise<D1ExecResult>;
atob(data: string): string;
declare function atob(data: string): string;
@modelcontextprotocol/sdk, zod, @biomejs/biome, @cloudflare/workers-types, @types/node, typescript, wrangler
Gates applied: no_behavioural_pass, no_license.
c23cf3f01fbcfull audit observations/trust-audit/mcp-server/wesbos__currency-conversion.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-08 | c23cf3f01fbc | BLOCK | D | 69 | first audit |
Questions
What is the Currency Conversion MCP server?
A currency conversion MCP server
What tools does Currency Conversion expose?
4 in total: 4 read-only, 0 that write, and 0 that can delete or overwrite. Every one is listed on this page with its risk.
Is Currency Conversion safe to connect to an agent?
No — not without reading the findings first. The audit graded it D (69/100) and found 2 critical or high issues in the source. Each one is listed on this page with the file and line it is on.
What credentials does Currency Conversion need?
No credential environment variables were found in its source, so it appears to need none.
How current is this page?
The grade is for one exact copy of the source (c23cf3f01fbc), read on 2026-10-08. The repository is watched and re-audited when it changes.