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Side-by-side comparison of two Model Context Protocol servers. Pick the right one for Claude Desktop, Claude Code, or Cursor.
UK address (Royal Mail PAF), email, and phone (live HLR carrier) validation via the Postio API. Six tools: address search, postcode lookup, UDPRN, email validat
| Feature | Postio | Slack |
|---|---|---|
| Pricing | Free | Free |
| Installs | — | 9 200 |
| Rating | — | 4.6 (158) |
| Verified | — | |
| Hosted | — | Hosted |
| Tools | — | 4 |
| Category | communication | communication |
| Author | postio-uk | Slack |
| Repo | postio-uk/postio-integrations | — |
UK address (Royal Mail PAF), email, and phone (live HLR carrier) validation via the Postio API. Six tools: address search, postcode lookup, UDPRN, email validate, phone validate, and a health probe.
Bring your Slack into Claude. Catch up on channels, search history, send messages and summarize long threads.
Looking for something else? Browse all MCPs or check trending this week.