Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Read and calculate currency exchange rates with your paid currencylayer account.
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Works in Claude on the web, desktop and mobile:
https://currencylayer.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http currencylayer https://currencylayer.usefulapi.io/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"currencylayer": {
"url": "https://currencylayer.usefulapi.io/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"currencylayer": {
"type": "http",
"url": "https://currencylayer.usefulapi.io/mcp"
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
https://currencylayer.usefulapi.io/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
currencylayer_get_live_ratesSPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). Real-time exchange rates for up to 174 world currencies and precious metals relative to a source currency (default USD). Quotes are keyed by pair, e.g. US
currencylayer_get_historical_ratesSPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). Exchange rates for one past date (data back to 1999 for most currencies; a currency added later has no data before its start date and the whole request th
currencylayer_convert_currencySPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). Convert an amount from one currency to another with real-time rates, or with the rates of a past date. Returns the result and the quote used. Needs the Ba
currencylayer_get_timeframe_ratesSPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). Daily exchange rates for every date from start_date to end_date (at most 365 days apart), one entry per date. Needs the Enterprise plan or higher. The rep
currencylayer_get_rate_changesSPENDS 1 request of your currencylayer monthly quota per call (also when it fails after authentication; it is never retried). How exchange rates changed between two dates: per currency pair the start_rate, end_rate, absolute change and change_pct. Pass both dates or none (none =
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
The registry name was verified against the domain usefulapi.io (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
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Read 5 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
The registry does not list a required key, though some servers ask you to sign in on first use.
It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (1.6.3) reached the registry yesterday.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, Dechonet MCP
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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Read and calculate exchange rates with your paid currencylayer account.
https://currencylayer.usefulapi.io/mcp.claude mcp add --transport http currencylayer https://currencylayer.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "currencylayer": { "url": "https://currencylayer.usefulapi.io/mcp" } } }
Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your currencylayer credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/currencylayer/
| Tool | Type | What it does |
|---|---|---|
currencylayer_get_live_rates | write | Get live exchange rates |
currencylayer_get_historical_rates | write | Get historical exchange rates |
currencylayer_convert_currency | write | Convert an amount |
currencylayer_get_timeframe_rates | write | Get exchange rates for a date range |
currencylayer_get_rate_changes | write | Get exchange rate changes |
currencylayer_usage_status | meta | Usage status (free-tier meter) |
currencylayer_request_feature | meta | Request a missing feature |
currencylayer_upgrade | meta | Upgrade to Pro or Pro+ |
currencylayer_cancel_subscription | meta | Cancel the Pro subscription |
read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Pro (per currencylayer access key) | $9/mo or $90/yr (2 months free) | Unlimited* |
\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.
Pro covers this server only. Subscribe with currencylayer_upgrade (it returns a Stripe Checkout link). Cancel any time with currencylayer_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running currencylayer_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT