com.regtail/regtail
RegTail
UK used-car checks: MOT history, mileage and an advert's claims tested against the records
alive probed 2026-10-15 · HTTP 200
10tools
2.7ktokens in Claude Opus 5.5
2.8ktokens in Claude Code
1.4 %of a 200k context window
1.5ko200k_base estimate
647 msto initialize
299 msto list tools
- Endpoint
- https://regtail.com/mcp (streamable-http)
- Host
- regtail.com
- Protocol
- 2025-11-25
- Reports itself as
- RegTail
- Capabilities
- prompts, resources, tools
- Instructions
- 1 048 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-15. Counted again when the tool definitions change. Method.
- Website
- https://regtail.com/docs/agents
- Registry
- active, updated 2026-10-04 · registry entry
- Reachable
- 4 of the last 4 probes
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| resolve_vehicle | 354 | 23 % |
| unlock_report | 193 | 13 % |
| full_report | 171 | 11 % |
| free_check | 168 | 11 % |
| compare_vehicles | 151 | 10 % |
History
We add a row when the result changes. A server with no change keeps its last row.
| Probed | Result | Init | Tools | Claude | o200k |
|---|---|---|---|---|---|
| 2026-10-15 09:55 | alive | 5.6 s | 10 | 2.7k | 1.5k |
| 2026-10-07 11:04 | alive | 657 ms | 8 | 1.7k | 1.0k |
| 2026-10-05 13:36 | alive | 647 ms | 8 | 1.7k | 986 |
| 2026-10-05 00:19 | needs auth |
Badge and feed
[](https://mcpcost.ulehla.dev/s/com.regtail/regtail)
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.