# io.github.bolyra/shield

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

- name: io.github.bolyra/shield
- version: 0.1.0
- connection class: L0 (run_local_package)
- trust: 76/100 flags: duplicate-repo
- quality: –/100 (not scored)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.bolyra%2Fshield
- tools: https://api.protogrid.dev/v1/servers/io.github.bolyra%2Fshield/tools

**Runs on your machine: something must execute the package.** Only local packages are published (npm, PyPI, OCI, …). The registry never executes them, so tools are unknown until you run it.

## Connection (mcpServers)

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


## Trust

- hygiene: 80
- liveness: n/a
- freshness: 65
- provenance: 80
- drivers: +repository +namespace-matches-repo ~liveness-unmeasured ~updated-119d-ago -duplicate-repo(4 names)
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality –/100 (not scored)

Not scored: fewer than three checks apply, usually because no remote answered a credential-free probe or the server is a local package.

### protocol: n/a (weight 25)

- n/a `protocol.modern`, `protocol.stateless`, `protocol.transport`, `protocol.list_ttl`: no remote answered a protocol handshake (not probed yet, unreachable, or local-only)

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: n/a (weight 30)

- n/a `tools.descriptions`, `tools.description_length`, `tools.schemas`, `tools.annotations`, `tools.directory_hints`, `tools.token_cost`, `tools.api_dump`: tool list unknown (behind auth, not probed, or empty)

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`: tool list unknown

### dependencies: 50 (weight 15)

- fail `deps.known_vulns`: 2 advisories to act on (malicious, or rated high or critical with a fix available): GHSA-qpx9-hpmf-5gmw in underscore@1.13.6 (indirect, fixed in 1.13.8), GHSA-96hv-2xvq-fx4p in ws@8.18.0 (indirect, fixed in 8.21.0); 2 more of lower severity or without a fix
- n/a `deps.mcp_sdk_version`: the official MCP SDK is not in the dependency graph
- pass `deps.resolvable`: @bolyra/shield@0.1.0 resolved: 111 packages

- tools: unknown
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.bolyra/shield.svg)](https://protogrid.dev/servers/io.github.bolyra/shield)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Dependencies

- npm @bolyra/shield@0.1.0: resolved, 110 dependencies
  - GHSA-qpx9-hpmf-5gmw (high) in `` underscore@1.13.6 ``, indirect, fixed in `` 1.13.8 ``, advisory summary: "Underscore has unlimited recursion in \_.flatten and \_.isEqual, potential for DoS attack" https://osv.dev/vulnerability/GHSA-qpx9-hpmf-5gmw
  - GHSA-96hv-2xvq-fx4p (high) in `` ws@8.18.0 ``, indirect, fixed in `` 8.21.0 ``, advisory summary: "ws: Memory exhaustion DoS from tiny fragments and data chunks" https://osv.dev/vulnerability/GHSA-96hv-2xvq-fx4p
  - GHSA-58qx-3vcg-4xpx (moderate) in `` ws@8.18.0 ``, indirect, fixed in `` 8.20.1 ``, advisory summary: "ws: Uninitialized memory disclosure" https://osv.dev/vulnerability/GHSA-58qx-3vcg-4xpx
  - GHSA-848j-6mx2-7j84 (low) in `` elliptic@6.6.1 ``, indirect, no fix yet, advisory summary: "Elliptic Uses a Cryptographic Primitive with a Risky Implementation" https://osv.dev/vulnerability/GHSA-848j-6mx2-7j84

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0.

## Remotes

_none_

## Packages

- npm @bolyra/shield@0.1.0

## Tools (0)

_none observed_