What tools does the vizier-2 MCP server provide?

vizier-2 exposes 1 tools: vizier_verify_action. This list was returned by the running server when we connected to it.

Does vizier-2 require an API key?

No. vizier-2 answered a tools/list request without credentials.

How do I install vizier-2?

Run: claude mcp add --transport http vizier https://vizier.vassiliy-lakhonin.workers.dev/mcp. One-click install links for Cursor and VS Code are also available on the server's page.

Connection check verified live · 26h ago

vizier-2

Deterministic authorization for one proposed AI agent action, returned with a signed receipt.

AI & LLM tooling

Install

Remote (HTTP)

claude mcp add --transport http vizier https://vizier.vassiliy-lakhonin.workers.dev/mcp

Tools 1

GitHub stars —

Installs / wk —

Licence —

Transport streamable-http

Last checked 26h ago

Tools & capabilities

1 tool

Read from the running server on 26h ago.

vizier_verify_action read-only agent*action*context*authority*principal*

Evaluate whether an AI agent should be allowed to perform a proposed action.

Context cost

Light

Connecting this server adds 1 tool definitions to every request — roughly 90 tokens before you ask anything.

Adds little to your context. Safe to keep connected.

Estimated at ~90 tokens per tool. Actual size varies with schema complexity — treat this as an order of magnitude, not a measurement.

both mention “proposed” · 4 tools

deepseek-continuity local install

both mention “returned”

juicy-designs-quote verified live · 27h ago

both mention “returned” · 7 tools

returncheck verified live · 27h ago

both mention “returned” · 1 tools

authserver local install

both mention “authorization”

kimai-mcp-server local install

both mention “authorization” · 14 tools

Ranked by shared tools where both expose an inventory, otherwise by shared wording.

Source & links

Registry: io.github.vassiliylakhonin/vizier
Endpoint: https://vizier.vassiliy-lakhonin.workers.dev/mcp
Sources: registry