io.github.vassiliylakhonin/vizier-guard
Vizier Guard
Deterministic authorization and security guard for AI agent actions with signed receipts.
alive probed 2026-10-14
3tools
823tokens in Claude Opus 5.5
856tokens in Claude Code
0.4 %of a 200k context window
445o200k_base estimate
1.1 sto initialize
4 msto list tools
- Run it
- uvx vizier-guard==0.3.2 (stdio, probed in a container with the network off)
- Host
- pypi.org
- Reports itself as
- vizier-guard 0.3.2
- Capabilities
- tools
- Instructions
- 368 characters
- Claude count
- Claude Opus 5.5, measured 2026-10-14. Counted again when the tool definitions change. Method.
- Repository
- https://github.com/vassiliylakhonin/vizier
- Website
- https://vizier.vassiliy-lakhonin.workers.dev
- Registry
- active, updated 2026-09-12 · registry entry
- Reachable
- 1 of the last 1 probe
Most expensive tools
| Tool | Tokens (o200k) | Share of this server |
|---|---|---|
| vizier_screen_action | 224 | 50 % |
| vizier_verify_receipt | 120 | 27 % |
| vizier_check_policy | 101 | 23 % |
Badge and feed
[](https://mcpcost.ulehla.dev/s/io.github.vassiliylakhonin/vizier-guard)
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.