Vizier Guard

Deterministic authorization and security guard for AI agent actions with signed receipts.

Connector by vassiliylakhonin · GitHub account verified by the MCP Registry

IndexedMITLocal (stdio)

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Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/vassiliylakhonin-vizier-guard

Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.

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About

Deterministic authorization and security guard for AI agent actions with signed receipts.

Reviews

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No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools: 3 read · 0 write · 0 delete · 1 not yet classified
Secrets: None asked for
Install scripts: Not scanned yet
Runs as: Python package

Tools by what they do 4

Read from the source code; the running server may list different tools.

Read 3 · Look things up without changing anything.

vizier_check_policy
vizier_verify_action
vizier_verify_receipt

Not yet classified 1 · We could not tell from the name and description.

vizier_screen_action

Tools (4)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

vizier_check_policy
Check content or parameters against security guardrails (DLP credential/PII leaks, sanctions screening, or circuit breaker loop limits).
vizier_screen_action
Screen and authorize a proposed AI agent action before execution. Evaluates deterministic policy constraints, DLP leakage, loop prevention, and returns an ALLOW / REVIEW / BLOCK decision with an auditable cryptographic receipt.
vizier_verify_actionVerify Agent Actionread-only
Evaluate whether an AI agent should be allowed to perform a proposed action.
vizier_verify_receipt
Verify a cryptographic receipt or audit proof issued by Vizier. Validates token structure, expiration, and exact request/action hash binding.

Signals

Stars: 0
Forks: 0
Open issues: 0
Weekly downloads: 35
Last commit: Oct 24, 2026 (7 days ago)
Last release: Oct 23, 2026 (7 days ago)
Last package publish: Sep 12, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026) and the package registry.

Details

Registry name: io.github.vassiliylakhonin/vizier-guard
Version: 0.3.2
Auth: No auth
Packages: pypi vizier-guard
License: MIT
Repository: github.com/vassiliylakhonin/vizier
Website: vizier.vassiliy-lakhonin.workers.dev
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Official MCP Registry github-graphql

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Cite this page

Vizier Guard MCP server. Agent Mart. https://agentmart.dev/connectors/vassiliylakhonin-vizier-guard (last updated 2026-10-24)