# io.github.grulex/grpc-invoke-mcp (npm · @grulex/grpc-invoke-mcp)

MCP server for describing and invoking gRPC methods

- Trust score: 70/100 (medium)
- Change this week: −7
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-04

## Components

- npm · `@grulex/grpc-invoke-mcp`: 70/100 (this document), [markdown](https://verifymcp.io/servers/grulex-grpc-invoke-mcp/grulex-grpc-invoke-mcp.md), [page](https://verifymcp.io/servers/grulex-grpc-invoke-mcp/grulex-grpc-invoke-mcp)

## Channel facts

- Registry: `npm`
- Package: `@grulex/grpc-invoke-mcp`
- Version: `0.1.5`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-04.

- **Supply Chain Security**: 94/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - Runs a script at install time (postinstall) that we could not recognise. It may be perfectly ordinary, but we do not read the published tarball, so we cannot say what it does.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 45/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 66 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 71/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 302 tokens (~151/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 27/100
  - Stability observed for 8 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add grulex-grpc-invoke-mcp -- npx -y @grulex/grpc-invoke-mcp
```

### Codex

```bash
codex mcp add grulex-grpc-invoke-mcp -- npx -y @grulex/grpc-invoke-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "grulex-grpc-invoke-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@grulex/grpc-invoke-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add grulex-grpc-invoke-mcp --command npx --arg -y --arg @grulex/grpc-invoke-mcp
```

### Hermes

```yaml
mcp_servers:
  grulex-grpc-invoke-mcp:
    command: "npx"
    args: ["-y", "@grulex/grpc-invoke-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "grulex-grpc-invoke-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@grulex/grpc-invoke-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 70, +4)

- [functional improvement] Stability: unverified → 0.23

### 2026-08-02 (score 66, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-08-01 (score 51, −8)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-31 (score 59, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 77, +32)

- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: good
- [functional] First check of Tool coverage: 100
- [functional] First check of Tool coverage: 100

### 2026-07-26 (score 45)

First indexed and scored.

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

## MCP tools (2)

### `grpc_call` (~153 tokens)

Call a unary gRPC method using JSON input. Supports server reflection or local .proto files.

Input parameters:

- `headers` (object): request metadata headers
- `import_paths` (null|array): proto import paths
- `method` (string, required): full method, for example helloworld.Greeter/SayHello
- `plaintext` (boolean, required): use plaintext HTTP/2 instead of TLS
- `proto_files` (null|array): paths to .proto files
- `request_json` (object): JSON request body
- `target` (string, required): host:port, for example localhost:50051
- `timeout_ms` (integer): timeout in milliseconds
- `use_reflection` (boolean, required): use gRPC server reflection

Output parameters:

- `response_json` (string)

### `grpc_describe` (~149 tokens)

Describe gRPC services, methods, or message symbols using server reflection or local .proto files.

Input parameters:

- `headers` (object): request metadata headers
- `import_paths` (null|array): proto import paths
- `plaintext` (boolean, required): use plaintext HTTP/2 instead of TLS
- `proto_files` (null|array): paths to .proto files
- `symbol` (string): fully-qualified symbol to describe, for example helloworld.Greeter/SayHello or package.Service
- `target` (string, required): host:port, for example localhost:50051
- `timeout_ms` (integer): timeout in milliseconds
- `use_reflection` (boolean, required): use gRPC server reflection

Output parameters:

- `description` (string)
- `symbols` (null|array)

## Diagnostics

Captured diagnostic sections: Provenance, Install scripts, Dependencies. The full working is on the page: https://verifymcp.io/servers/grulex-grpc-invoke-mcp/grulex-grpc-invoke-mcp#diagnostics

## Score history

- 2026-08-04: 70
- 2026-08-03: 70
- 2026-08-02: 66
- 2026-08-01: 51
- 2026-07-31: 59
- 2026-07-29: 77
- 2026-07-28: 77
- 2026-07-27: 77
- 2026-07-26: 45

## Links

- npm package: https://www.npmjs.com/package/@grulex/grpc-invoke-mcp
- Socket report: https://socket.dev/npm/package/@grulex/grpc-invoke-mcp
- Repository: https://github.com/grulex/grpc-invoke-mcp
- Changelog RSS feed: https://verifymcp.io/servers/grulex-grpc-invoke-mcp/grulex-grpc-invoke-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/grulex-grpc-invoke-mcp/grulex-grpc-invoke-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/grulex-grpc-invoke-mcp/grulex-grpc-invoke-mcp