Whentofly MCP Server

whentofly.io is a flexible-date flight search your AI agent can use directly. Ask your agent "cheapest round trip from Singapore to Tokyo in October, 5–9 days" - it searches a whole date window, returns the cheapest real fares with booking links, and tells you where that price sits against the route's usual range. It is available as a remote MCP endpoint.

Teams that want a hosted API integration endpoint instead of running a local process.

VERIFIED ACTIVE

LAST COMMIT 2026-08-26 · ★ 3 · #249 OF 278 MAINTAINED API INTEGRATION · VERIFIED 2026-09-18

MIT · how we verify → /methodology

01 · Install Whentofly

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add dimabalony-whentofly-mcp --transport http https://whentofly.io/mcp?ch=mcp-registry

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "dimabalony-whentofly-mcp": {
      "url": "https://whentofly.io/mcp?ch=mcp-registry"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://whentofly.io/mcp?ch=mcp-registry

transport: streamable-http

endpoint alive - responded to MCP initialize · probed 2026-09-17

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as remote - your agent's requests go to whentofly.io

endpoint auth accepted our unauthenticated MCP initialize - no credentials needed to connect

license MIT - declared in the repository

registry namespace io.github.dimabalony is GitHub-verified and matches the repo owner

03 · Who maintains Whentofly

whentofly is maintained by dimabalony. It's the only MCP server we track from this author; the repo dates to Jul 2026.

04 · Facts

repository: github.com/dimabalony/whentofly-mcp
website: https://whentofly.io/
category: API integration - ranked #249 of 278 actively-maintained API integration servers as of 2026-09-18.
registry: io.github.dimabalony/whentofly (active, first published 2026-07-09 · 2 versions)

05 · Whentofly FAQ

What is Whentofly?

Is Whentofly still maintained?

Yes - as of 2026-09-18, its last commit was 2026-08-26. We re-verify nightly.

How do I install Whentofly?

Run `claude mcp add dimabalony-whentofly-mcp --transport http https://whentofly.io/mcp?ch=mcp-registry`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does Whentofly require authentication?

No - the endpoint accepted our unauthenticated MCP initialize when probed on 2026-09-17; you can connect without credentials.

06 · Alternatives to Whentofly

Alternatives to Whentofly

Maintained API integration servers if Whentofly isn't the fit.

More API integration MCP servers · Openapi · Yandex Metrika · Help Scout MCP Server · Chassis · Zotero Native MCP