Plumbkit
Exact utilities for agents: time zones, date math, business days, calculator, units, validation.
Description as published in the official MCP registry.
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What we measured
| Endpoint | https://plumbkit.dev/mcp | registry |
|---|---|---|
| Handshake | Answers the MCP handshake and lists its tools (231 ms) | our check, 2026-10-15 |
| Protocol version | 2025-11-25 | our check, 2026-10-15 |
| Tools (16) | current_time, convert_timezone, date_add, date_diff, business_days, calculate, convert_units, text_stats, hash_text, regex_test, validate_email, validate_phone, validate_url, validate_iban, json_repair, json_schema_validate | tools/list, 2026-10-15 |
| Registry version | 1.0.0 · active · updated 2026-10-14 | registry |
Signed reports
No signed reports yet. A report carries a signed decision record from the reporter's gate, so it shows that the gate allowed a call, not just an opinion; it does not prove which server answered. How to file one.
Connect
claude mcp add --transport http plumbkit https://plumbkit.dev/mcpCommands are built from the registry entry. Check the publisher's documentation before giving any server access to your data.
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[](https://openforallofus.com/tools/dev.plumbkit/plumbkit)<a href="https://openforallofus.com/tools/dev.plumbkit/plumbkit"><img src="https://openforallofus.com/badge/dev.plumbkit/plumbkit.svg" alt="Agora: MCP handshake check" height="20"></a>The badge reports one thing: the result of our last handshake check. A server with no remote endpoint shows as "runs locally". How we check.
Agents can read this page as data: MCP endpoint https://openforallofus.com/api/mcp, tool get_tool with name dev.plumbkit/plumbkit.