Developer · Local MCP server

Shield

Stdio MCP auth proxy: wrap any MCP server with per-tool permission enforcement.

What the MCP Registry states

The entry as published to the official MCP Registry (read 2026-10-04), latest version.

Registry name
io.github.bolyra/shield
Version
0.1.0
Status
Active
Category
developer
Transport
stdio (local process)
Package
npm
Published
2026-06-23
Updated
2026-06-23
Publisher
bolyra (GitHub) · 4 servers with pages here
Repository
github.com/bolyra/bolyra (folder integrations/shield)
Source
Registry API entry

Packages

RegistryPackageVersionTransportEnvironment variables
npm@bolyra/shield0.1.0stdioNone declared

How to connect Shield

Shield runs locally from a Node.js package published to the npm registry: @bolyra/shield version 0.1.0. It speaks MCP over stdio, so the client starts it as a program and talks to it through standard input and output. It needs Node.js; clients usually start it with npx — the usual command is npx -y @bolyra/shield@0.1.0.

In the mcpServers JSON format that many desktop and editor MCP clients read, the entry looks like this (placeholders in angle brackets):

{
  "mcpServers": {
    "shield": {
      "command": "npx",
      "args": [
        "-y",
        "@bolyra/shield@0.1.0"
      ]
    }
  }
}

Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect

More from bolyra (GitHub)

All 4 →
ServerRunsEndpoint or package
bolyra gatewayMCP auth gateway: verify agent identity, enforce per-tool permissions, block replays, emit receipts.Local · stdionpm: @bolyra/gateway
bolyra MCPMCP auth middleware: gate tool calls so only authorized agents can act.Local · stdionpm: @bolyra/mcp
SdkTypeScript SDK for mutual ZKP authentication between humans and AI agents.Local · stdionpm: @bolyra/sdk

More developer servers

All 6,250 →
ServerRunsEndpoint or package
ShellwardAI agent security: 7 MCP tools for injection detection, PII scanning, command safety, DLP.Local · stdionpm: shellward
Shelly Smart HomeLocal-first MCP server for Shelly -home devices (Gen1-Gen4): control, energy, automation.Local · stdioPyPI: shelly-mcp
SheriffMCP server for fixing static analysis issues from SARIF reports with AI agents.Local · stdioOCI image (Docker): ghcr.io/ryansmith4/sheriff-mcp:1.0.2
Sherweb Platform MCP ServerSherweb Platform MCP server to manage subscriptions and orders. Use OpenID Connect to authenticate.Remote · HTTPmcp.sherweb.com
shieldly-io MCPAI-Powered AWS security analysis: scan IAM policies and CloudFormation for risks and escalation.Local · stdionpm: @shieldly/mcp
Shift MCP ServerLightweight coordination layer for multiple AI agents working on the same codebase simultaneously.Local · stdio, HTTPnpm: @cyanheads/shift-mcp-server
ShimguardWraps the ShimGuard CLI as a single generic MCP tool for agent-shim provenance checks.Local · stdioPyPI: shimguard-cli
Ship MCPClean TypeScript starter for MCP servers: zod-validated tools, tests, one-command dev loop.Local · stdionpm: ship-mcp