io.github.Lulu-The-Narwhal/postal-lookup-mcp
Postal Lookup MCP
Free, keyless postal/ZIP code lookup: place name(s), state/region, and coordinates.
alive probed 2026-10-05 · HTTP 200
1tools
355tokens in Claude Opus 5.5
370tokens in Claude Code
0.2 %of a 200k context window
226o200k_base estimate
92 msto initialize
45 msto list tools
- Endpoint
- https://ads.getlulu.dev/postal/mcp (streamable-http)
- Host
- ads.getlulu.dev
- Protocol
- 2025-11-25
- Reports itself as
- postal-lookup 3.4.4
- Capabilities
- experimental, extensions, logging, prompts, resources, tools
- Instructions
- none
- Claude count
- Claude Opus 5.5, measured 2026-10-05. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/Lulu-The-Narwhal/lulu-platform
- Registry
- active, updated 2026-08-09 · registry entry
- Reachable
- 6 of the last 6 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| lookup_postal_code | 226 | 100 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-05 14:22 | alive | 92 ms | 1 | 355 | 226 |
| 2026-10-05 00:29 | alive | 49 ms | 1 | 226 | |
| 2026-10-04 10:02 | alive | 112 ms | 1 | 226 | |
| 2026-10-04 07:56 | alive | 96 ms | 1 | 226 | |
| 2026-10-03 20:36 | alive | 142 ms | 1 | 226 | |
| 2026-10-03 17:52 | alive | 251 ms | 1 | 226 |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.Lulu-The-Narwhal/postal-lookup-mcp)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.