# com.mambabuilt/mcp-substack-scraper (npm · @mambalabsdev/mcp-substack-scraper)

Substack publications, posts, subscriber counts, and keyword search.

- Trust score: 56/100 (low)
- Change this week: −12
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- npm · `@mambalabsdev/mcp-substack-scraper`: 56/100 (this document), [markdown](https://verifymcp.io/servers/com-mambabuilt-mcp-substack-scraper/mambalabsdev-mcp-substack-scraper.md), [page](https://verifymcp.io/servers/com-mambabuilt-mcp-substack-scraper/mambalabsdev-mcp-substack-scraper)

## Channel facts

- Registry: `npm`
- Package: `@mambalabsdev/mcp-substack-scraper`
- Version: `1.0.1`
- 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 2026-11-05.

- **Supply Chain Security**: 48/100
  - Malware scan not yet available for this package.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 30 of 92 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 48/100
  - 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 0 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 59/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 551 tokens (~551/item across 1 items; 1 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 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.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 1 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 1 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the com.mambabuilt/mcp-substack-scraper server?

com.mambabuilt/mcp-substack-scraper runs locally as an npm package, launched with npx -y @mambalabsdev/mcp-substack-scraper. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add com-mambabuilt-mcp-substack-scraper -- npx -y @mambalabsdev/mcp-substack-scraper
```

### Cursor

```json
{
  "mcpServers": {
    "com-mambabuilt-mcp-substack-scraper": {
      "command": "npx",
      "args": [
        "-y",
        "@mambalabsdev/mcp-substack-scraper"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-mambabuilt-mcp-substack-scraper": {
      "command": "npx",
      "args": [
        "-y",
        "@mambalabsdev/mcp-substack-scraper"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add com-mambabuilt-mcp-substack-scraper -- npx -y @mambalabsdev/mcp-substack-scraper
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add com-mambabuilt-mcp-substack-scraper --command npx --arg -y --arg @mambalabsdev/mcp-substack-scraper
```

### Hermes

```yaml
mcp_servers:
  com-mambabuilt-mcp-substack-scraper:
    command: "npx"
    args: ["-y", "@mambalabsdev/mcp-substack-scraper"]
```

### Netclaw

```json
{
  "McpServers": {
    "com-mambabuilt-mcp-substack-scraper": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@mambalabsdev/mcp-substack-scraper"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-mambabuilt-mcp-substack-scraper -t stdio -c npx -a -y @mambalabsdev/mcp-substack-scraper
```

### Other

```json
{
  "mcpServers": {
    "com-mambabuilt-mcp-substack-scraper": {
      "command": "npx",
      "args": [
        "-y",
        "@mambalabsdev/mcp-substack-scraper"
      ]
    }
  }
}
```

## 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.

### 2026-11-05 (score 56, −14)

- [security regression] Malware scan: pass → unverified
- [functional] Package version: 1.0.0 → 1.0.1

### 2026-11-03 (score 70, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 69, +1)

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-29 (score 68)

First indexed and scored.

## MCP tools (1)

### `scrape_substack` (~551 tokens)

Scrape Substack publications, posts, and search

Read Substack publications and posts, or search Substack by keyword. Give publications as URLs, domains, substack.com profiles, or bare Substack names (for example lenny.substack.com, https://www.notboring.co, lenny). Each publication returns one publication row (name, author, subscriber count as Substack shows it, subscriber tier text, paid plan prices) and its newest posts, one row each with date, free or paid audience, likes, comments, restacks, word count, bylines, and tags. Search queries return matching posts with their publication and subscriber count, or one row per publication when search_output is publications. Input with nothing to run returns one free row whose error_reason starts with input_invalid:. A run that does not succeed is returned as an error with its run ID. Read-only; requires an APIFY_TOKEN; Apify charges per post row and per publication row.

Input parameters:

- `include_body` (string): true to add the post text (up to 20,000 characters) to each post row of a listed publication. A paid post gives its free preview. Reads one more page per post; no extra charge. Default false.
- `include_publication_row` (string): true to return one publication row per listed publication (name, author, subscribers, paid plan prices), billed as a publication row. false returns only post rows. Default true.
- `max_charge_usd` (string): Optional. The run stops before it would charge more than this.
- `max_posts_per_publication` (string): Newest posts returned per publication, 0 to 1000. 0 returns only the publication row. Default 20.
- `max_search_results` (string): Rows returned per search query, 1 to 1000. Default 50.
- `proxy_mode` (string): How pages are fetched. Default auto.
- `publications` (array): Substack publications, one per line, up to 100: a URL (https://www.lennysnewsletter.com), a domain (lenny.substack.com), a profile (substack.com/@lenny), or a bare Substack name (lenny). Each one ret…
- `search_output` (string): What a search query returns. Default posts.
- `search_queries` (array): Keywords to search across Substack posts, one per line, up to 20. Each query returns matching posts, or the publications behind them when Search output is publications.
- `since_days` (string): Optional. Skip posts older than this many days. 0 or empty keeps every post up to the max. Default 0.

## Diagnostics

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

## Score history

- 2026-11-05: 56
- 2026-11-04: 70
- 2026-11-03: 70
- 2026-11-02: 69
- 2026-11-01: 69
- 2026-10-31: 69
- 2026-10-30: 68
- 2026-10-29: 68

## Common questions

### What is the com.mambabuilt/mcp-substack-scraper server?

com.mambabuilt/mcp-substack-scraper is listed in the public MCP registry as com.mambabuilt/mcp-substack-scraper. Substack publications, posts, subscriber counts, and keyword search. This page covers its npm package (@mambalabsdev/mcp-substack-scraper).

### Is the com.mambabuilt/mcp-substack-scraper server safe to use?

com.mambabuilt/mcp-substack-scraper scores 56 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the com.mambabuilt/mcp-substack-scraper server expose?

com.mambabuilt/mcp-substack-scraper exposes 1 tool: scrape_substack. Their descriptions and schemas cost roughly 551 tokens of context every time the server is loaded.

### Is the com.mambabuilt/mcp-substack-scraper server still maintained?

com.mambabuilt/mcp-substack-scraper is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the com.mambabuilt/mcp-substack-scraper server under?

com.mambabuilt/mcp-substack-scraper declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

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