Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Read and create SavvyCal scheduling links and booked events.
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We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
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Works in Claude on the web, desktop and mobile:
https://savvycal.usefulapi.io/mcpRun this in your terminal
claude mcp add --transport http savvycal https://savvycal.usefulapi.io/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"savvycal": {
"url": "https://savvycal.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": {
"savvycal": {
"type": "http",
"url": "https://savvycal.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://savvycal.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.
savvycal_list_linksList the authenticated user's scheduling links (paginated). SavvyCal REST: GET /links.
savvycal_get_linkGet a single scheduling link by id. SavvyCal REST: GET /links/{id}.
savvycal_get_link_slotsGet available booking time slots for a scheduling link. Returns slots with start_at/end_at/duration/rank. SavvyCal REST: GET /links/{id}/slots.
savvycal_list_eventsList booked events/meetings (paginated). SavvyCal REST: GET /events.
savvycal_get_eventGet a single booked event/meeting by id. SavvyCal REST: GET /events/{id}.
savvycal_toggle_linkToggle a scheduling link between active and disabled (changes whether the public booking page accepts bookings). SavvyCal REST: POST /links/{id}/toggle.
savvycal_duplicate_linkCreate a copy of an existing scheduling link. SavvyCal REST: POST /links/{id}/duplicate.
savvycal_cancel_eventCancel a booked event/meeting. This notifies attendees and frees the slot. SavvyCal REST: DELETE /events/{id}.
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
Responded in 266 ms (HTTP 200)
No sign-in needed
Read 8 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 (1.35.3) 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, yontu
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.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
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Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
Read and create SavvyCal scheduling links and booked events. Hosted, no local install.
Live endpoint: https://savvycal.usefulapi.io/mcp · Homepage: https://usefulapi.io
https://savvycal.usefulapi.io/mcp.claude mcp add --transport http savvycal https://savvycal.usefulapi.io/mcp, then run /mcp to log in.{
"mcpServers": { "savvycal": { "url": "https://savvycal.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 SavvyCal credentials.
Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/savvycal/
On first connect you'll paste your SavvyCal credentials. They are validated, stored per-user, and scoped to you — no keys in config files.
| Tool | Type | What it does |
|---|---|---|
savvycal_list_links | read | List links |
savvycal_get_link | read | Get link |
savvycal_get_link_slots | read | Get link slots |
savvycal_list_events | read | List events |
savvycal_get_event | read | Get event |
savvycal_toggle_link | write | Toggle link |
savvycal_duplicate_link | write | Duplicate link |
savvycal_cancel_event | write | Cancel event |
savvycal_usage_status | meta | Usage status (free-tier meter) |
savvycal_request_feature | meta | Request a missing feature |
savvycal_upgrade | meta | Upgrade to Pro or Pro+ |
savvycal_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 | $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 savvycal_upgrade (it returns a Stripe Checkout link). Cancel any time with savvycal_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running savvycal_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
MIT