Postbye
Read-only cancellation guides, mailing addresses and letters for thousands of subscriptions.
What it does
Postbye is an MCP server, a connector that lets an AI assistant use it as a tool. It is hosted: an assistant connects to it over the internet, nothing to install.
No capability identified yet from its description.
Facts come from the Official MCP Registry, as declared by the publisher. Capabilities are matched automatically (low confidence). None of this is a test of the tool.
At a glance
How to connect
As declared in the Official MCP Registry · hosted endpoint tested by Electra Index 2h ago (live check)Hosted endpoint
https://postbye.com/mcpstreamable-http
In Claude Code: claude mcp add --transport http postbye https://postbye.com/mcp
MCP settings (Claude Desktop, Cursor and other MCP clients)
{
"mcpServers": {
"postbye": {
"url": "https://postbye.com/mcp"
}
}
}Live check
Electra Index connected to the hosted endpoint 2h agoONLINE Postbye answered an MCP connection on 27 Oct 2026 and introduced itself as postbye 1.0.0 (MCP protocol 2025-06-18).
4 tools offered to AI assistants
search_companies· Find companies by name (for example "netflix" or "planet fitness") among the subscriptions and memberships Postbye has a cancellation guide for. Returns each match's slug, category, how the company takes cancellations and the guide URL. Useget_cancellation_guide· How to cancel one company's subscription or membership: how it takes cancellations, the notice period, the traps to check first, billing-partner notes, sources, when the facts were verified, the mailing address(es) on file and the guide andget_cancellation_letter· A plain-text cancellation letter for one company, built from the same template as Postbye's free letter tool, plus where to send it. Fields not supplied stay as [bracketed placeholders] to fill in. Nothing is stored.list_categories· The category hubs of the cancellation guides (streaming, gyms, phone and internet, insurance and more) with the number of guides in each and the hub URL.
What "online" means: the server answered an MCP connection at the time of the check. It is not a guarantee of security, quality or continuous uptime. How we test: we open an MCP session and ask for the tool list, as an AI assistant would. We never run a tool and never send a key. Checked every few days. Method
Is this your server? Monitoring Pro: a check every 30 minutes and an email within the hour when it stops answering. Launch offer: $39.99 once, for life.
Facts & evidence
Each fact shows where it was seen and when.| Fact | Value | Evidence | Source | Last confirmed |
|---|---|---|---|---|
| Hosted endpoint | https://postbye.com/mcp | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Local install (package) | no | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Remote access (hosted) | yes | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Website | https://postbye.com | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Registry status | active | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| Version | 1.0.0 | DECLARED | SRC-001 Official MCP Registry | 1h ago |
| MCP server | yes | DECLARED | SRC-001 Official MCP Registry | 1h ago |
Change history
- NEW27 Oct 2026first seen in the index
Is this page accurate?
Flag it and our robot re-checks the official source. Reports never change a score.Is Postbye still online?
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<a href="https://electraindex.com/mcp/postbye?utm_source=badge&utm_medium=share&utm_campaign=listing"><img src="https://electraindex.com/api/badge/postbye" alt="Listed on Electra Index"></a>Questions about Postbye
How do I connect Postbye?
Use the hosted endpoint https://postbye.com/mcp in your assistant's MCP settings. The exact settings are in "How to connect" above, as declared in the Official MCP Registry.
What tools does Postbye offer?
When Electra Index connected on 27 Oct 2026, it listed 4 tools: search_companies, get_cancellation_guide, get_cancellation_letter, list_categories. The full list is in "Live check" above.
Is Postbye online?
Yes. Its hosted endpoint answered an MCP connection from Electra Index 2h ago.