What can you do with Reoon?
reoon_verify(email, mode?, _apiKey)— status, catch-all (power mode
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
claude mcp add --transport http reoon 'https://gateway.pipeworx.io/reoon/mcp'
{
"mcpServers": {
"reoon": {
"type": "http",
"url": "https://gateway.pipeworx.io/reoon/mcp"
}
}
}
Documentation
From the project's README on GitHub, refreshed weekly. Links open on GitHub.
Contents
@pipeworx/reoon
Verify a single email address via Reoon Email Verifier (reoon.com), with an
explicit catch-all flag in "power" mode. Part of enrich-waterfall's
enrich_verify_email ordered verifiers (fleet #2860).
Part of Pipeworx — an MCP gateway connecting AI agents to 1745+ live data sources. This is an independent, unofficial integration — not affiliated with, endorsed by, or published by the upstream provider.
Tools
reoon_verify(email, mode?, _apiKey)— status, catch-all (power mode only), score, disposable/role/disabled/spamtrap/free flags.
Auth
BYO only. Pass your Reoon API key as _apiKey (sent as the key QUERY
PARAM, not a header — this is how Reoon's own docs specify it). Create a key
at https://emailverifier.reoon.com/ -> API Settings. No platform key (D4).
Data sources
https://emailverifier.reoon.com/api/v1/verify— single email verify (quick/power mode).
Verification notes (fleet #2860, 2026-10-08, no vendor key held)
- Edge-probed live with an invalid key: HTTP 401
{"reason":"Invalid API key.","status":"error"}— confirms the endpoint, thatkeyis read as a query param, and that a bad key fails cleanly. - Response shape from vendor docs (https://www.reoon.com/articles/api-documentation-of-reoon-email-verifier/,
read 2026-10-08) — no successful live call made (no key held):
- quick:
{ email, status: valid|invalid|disposable|spamtrap, is_valid_syntax, is_disposable, is_role_account, mx_accepts_mail, is_spamtrap, is_free_email, verification_mode: "quick" } - power:
{ email, status: safe|invalid|disabled|disposable|inbox_full| catch_all|role_account|spamtrap|unknown, overall_score, is_safe_to_send, is_valid_syntax, is_disposable, is_role_account, is_catch_all, is_deliverable, is_disabled, is_spamtrap, verification_mode: "power" }Only power mode exposesis_catch_all— this pack defaultsmodeto"power"so enrich_verify_email always gets the field it needs; quick mode reportscatch_all: nullrather than guessing.
- quick:
- Not verified (no key held): exact scoring thresholds behind
overall_score; whetherstatus: "unknown"(power mode) ever coincides withis_catch_all: trueor is a separate signal.
Quick Start
Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):
{
"mcpServers": {
"reoon": {
"url": "https://gateway.pipeworx.io/reoon/mcp"
}
}
}
What this endpoint actually serves
tools/list at https://gateway.pipeworx.io/reoon/mcp returns the tools in the table
above plus the shared Pipeworx meta-tools — ask_pipeworx,
discover_tools, search_within, remember/recall and the rest of the
gateway-wide set. So the tool count you see is larger than this table: a
single-pack endpoint currently lists roughly 30 shared tools alongside the
pack's own. The connection's initialize response states its exact scope, and
is the authoritative answer for a given day.
This is deliberate, not multiplexing by accident. The meta-tools are what let a
scoped connection answer a question this pack does not cover — via
ask_pipeworx, which routes across the whole catalog — without you adding a
second MCP server. There is currently no way to mount a pack endpoint without
them; if the extra schemas cost you more context than the routing is worth,
connect to the full gateway once rather than to several pack endpoints.
Or connect to the full Pipeworx gateway to get every pack's tools listed directly, instead of just this one's:
{
"mcpServers": {
"pipeworx": {
"url": "https://gateway.pipeworx.io/mcp"
}
}
}
Both URLs reach the same gateway and the same 1745+ data sources. The
only difference is which pack's tools are listed directly; ask_pipeworx
reaches all of them from either one.
No MCP client? Call it over HTTP
This pack takes your own API key (_apiKey) — we don't front one for it, so there's no curl here that would run without it. Inspect any tool: GET https://gateway.pipeworx.io/v1/tools/reoon_verify. Find one: POST https://gateway.pipeworx.io/v1/tools/search_packs with {"query":"..."}.
Standalone (no gateway account)
This package also runs as a local stdio MCP server — no Pipeworx account, no gateway round-trip:
{
"mcpServers": {
"reoon": {
"command": "npx",
"args": ["-y", "@pipeworx/mcp-reoon"]
}
}
}
Or run it directly to confirm it starts:
npx -y @pipeworx/mcp-reoon
It speaks MCP over stdin/stdout and answers initialize/tools/list/tools/call
for only this pack's tools — none of the shared meta-tools the gateway
connection above adds. Same source, same tools, no ask_pipeworx routing.
Using with ask_pipeworx
Instead of calling tools directly, you can ask questions in plain English — this works on the pack endpoint above as well as on the full gateway:
ask_pipeworx({ question: "your question about Reoon data" })
The gateway picks the right tool and fills the arguments automatically.
More
License
MIT
Frequently asked questions
What is Reoon?
Reoon MCP — wraps the Reoon Email Verifier API (reoon.com)
How do I install Reoon?
It runs as a remote server. In Claude Code: claude mcp add --transport http reoon 'https://gateway.pipeworx.io/reoon/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.
Does Reoon need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is Reoon open source?
Yes. Its code is on GitHub under the MIT license.
Who maintains Reoon?
It is published by pipeworx-io. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.