# io.github.growthbook/growthbook-mcp (npm · @growthbook/mcp)

Thin MCP server for GrowthBook — skill loader + authenticated API passthrough

- Trust score: 74/100 (medium)
- Change this week: +50
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@growthbook/mcp`: 74/100 (this document), [markdown](https://verifymcp.io/servers/growthbook-growthbook-mcp/growthbook-mcp.md), [page](https://verifymcp.io/servers/growthbook-growthbook-mcp/growthbook-mcp)

## Channel facts

- Registry: `npm`
- Package: `@growthbook/mcp`
- Version: `2.0.0`
- 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 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (94 of 95), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (94 of 95), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to growthbook/growthbook-mcp).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 3 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 69/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 565 tokens (~188/item across 3 items; 3 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **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.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### Claude

```bash
claude mcp add growthbook-growthbook-mcp -- npx -y @growthbook/mcp
```

### Codex

```bash
codex mcp add growthbook-growthbook-mcp -- npx -y @growthbook/mcp
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add growthbook-growthbook-mcp --command npx --arg -y --arg @growthbook/mcp
```

### Hermes

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

### Other

```json
{
  "mcpServers": {
    "growthbook-growthbook-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@growthbook/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.

### 2026-08-02 (score 74, +55)

- [security improvement] Known CVEs: unverified → partial
- [security improvement] Provenance: unverified → pass
- [security improvement] Install scripts: unverified → pass
- [security improvement] Malware scan: unverified → pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [security] The attested source repository moved: growthbook/growthbook-mcp
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] License: unverified → pass
- [functional improvement] Schema quality: unverified → excellent
- [functional] Licence: MIT

### 2026-08-01 (score 19, −7)

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

### 2026-07-31 (score 26, +2)

- [security regression] Malware scan: pass → unverified
- [functional improvement] Tool coverage: unverified → 100
- [functional] First check of Tool coverage: 100
- [functional] First check of Schema quality: unverified
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: fail
- [functional] Package version: 1.8.1 → 2.0.0

### 2026-07-30 (score 24, −1)

- [functional regression] Dependency health: partial → unverified
- [functional] Schema quality: Schema quality not yet verified: our sandbox run of this package did not complete, so we have no schema to assess.
- [functional] Tool coverage: Tool coverage not yet verified: our sandbox run of this package did not complete, so we have no tool definitions to assess.

### 2026-07-28 (score 25, +1)

- [functional improvement] Dependency health: unverified → partial

### 2026-07-27 (score 24)

First indexed and scored.

## MCP tools (3)

### `growthbook_call_api` (~177 tokens)

Call GrowthBook API

Make an authenticated HTTP request to the GrowthBook REST API on the user's behalf. Use method + path (+ optional JSON body) exactly as shown in skill workflows that mention gb-call. Paths typically start with /api/v1/ or /api/v2/. Returns the raw response body on success. IMPORTANT: Before POST, PUT, PATCH, or DELETE, confirm with the user (summarize method, path, and body) unless they have already explicitly instructed you to perform that mutation. GET requests do not need confirmation.

Input parameters:

- `body` (string): Optional JSON request body as a string (for POST/PUT/PATCH)
- `method` (string, required): HTTP method
- `path` (string, required): API path including query string if needed, e.g. /api/v1/projects or /api/v2/features/my-flag

### `growthbook_list_skills` (~61 tokens)

List GrowthBook Skills

List available GrowthBook agent skills (name + description). Use growthbook_read_skill to load the full workflow for a skill before acting. Skills encode how to accomplish GrowthBook tasks well; use growthbook_call_api to execute the REST calls they describe.

### `growthbook_read_skill` (~82 tokens)

Read GrowthBook Skill

Return the full markdown content of a GrowthBook skill by name (from growthbook_list_skills). Follow the skill's workflow; when it shows `gb-call <METHOD> <PATH> [body]`, use the growthbook_call_api tool with those arguments instead.

Input parameters:

- `name` (string, required): Skill name, e.g. flag-create or experiment-launch

## Diagnostics

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

## Score history

- 2026-08-03: 74
- 2026-08-02: 74
- 2026-08-01: 19
- 2026-07-31: 26
- 2026-07-30: 24
- 2026-07-28: 25
- 2026-07-27: 24

## Links

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