# io.github.opcastil11/mcp-prowl (npm · mcp-prowl)

Discover, evaluate, and compare SaaS APIs. Agent-verified scores and metrics.

- Trust score: 64/100 (medium)
- Change this week: +17
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `mcp-prowl`: 64/100 (this document), [markdown](https://verifymcp.io/servers/opcastil11-mcp-prowl/mcp-prowl.md), [page](https://verifymcp.io/servers/opcastil11-mcp-prowl/mcp-prowl)

## Channel facts

- Registry: `npm`
- Package: `mcp-prowl`
- Version: `0.1.1`
- 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 2026-08-03.

- **Supply Chain Security**: 86/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (94 of 98), 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 98), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 19/100
  - Repository check failed: the declared repository URL returned HTTP 404.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 142 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 82/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 556 tokens (~55/item across 10 items; 9 tools + 1 resources), lean.
  - 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.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add opcastil11-mcp-prowl -- npx -y mcp-prowl
```

### Codex

```bash
codex mcp add opcastil11-mcp-prowl -- npx -y mcp-prowl
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "opcastil11-mcp-prowl": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "mcp-prowl"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add opcastil11-mcp-prowl --command npx --arg -y --arg mcp-prowl
```

### Hermes

```yaml
mcp_servers:
  opcastil11-mcp-prowl:
    command: "npx"
    args: ["-y", "mcp-prowl"]
```

### Other

```json
{
  "mcpServers": {
    "opcastil11-mcp-prowl": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-prowl"
      ]
    }
  }
}
```

## 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 64, +18)

- [security regression] Provenance: unverified → fail
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Stability: unverified → 0.23
- [functional improvement] License: unverified → pass
- [functional] Licence: MIT

### 2026-08-02 (score 46, +7)

- [security regression] Install scripts: pass → unverified
- [security regression] Provenance: fail → unverified
- [security improvement] Malware scan: unverified → pass
- [functional regression] Maintenance: pass → unverified
- [functional regression] License: pass → unverified
- [functional] Licence: MIT

### 2026-07-31 (score 39, −18)

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

### 2026-07-30 (score 57, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-29 (score 75, +56)

- [security regression] Provenance: unverified → fail
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Install scripts: unverified → pass
- [functional improvement] Schema quality: unverified → good
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Schema quality: unverified → 100
- [functional improvement] License: unverified → pass
- [functional improvement] Tool coverage: unverified → 100
- [functional] Licence: MIT

### 2026-07-28 (score 19, −28)

- [functional regression] Tool coverage: 100 → unverified
- [functional regression] Schema quality: 100 → unverified
- [functional improvement] Dependency health: unverified → partial

### 2026-07-27 (score 47)

First indexed and scored.

## MCP tools (9)

### `prowl_discover` (~141 tokens)

Search the Prowl service directory by keyword, category, or filters. Returns ranked SaaS APIs with scores.

Input parameters:

- `category` (string): Filter by category (e.g. 'ai', 'email', 'database')
- `has_mcp` (boolean): Only show services with MCP support
- `limit` (integer): Max results (default 10)
- `min_score` (integer): Minimum ASO score (0-100)
- `q` (string): Search keyword (e.g. 'weather', 'payments')
- `sort` (string): Sort field
- `verified_only` (boolean): Only show benchmarked/verified services

### `prowl_search` (~69 tokens)

Natural language search for services. Use when the user describes what they need rather than naming a specific API.

Input parameters:

- `limit` (integer): Max results (default 10)
- `query` (string, required): Natural language query (e.g. 'find me a geocoding API with a free tier')

### `prowl_get_service` (~40 tokens)

Look up a specific service by its URL-friendly slug (e.g. 'stripe', 'openai').

Input parameters:

- `slug` (string, required): Service slug

### `prowl_metrics` (~40 tokens)

Get ASO score and verification status for a service. Use this to evaluate if a service is reliable.

Input parameters:

- `service_id` (string, required): Service UUID

### `prowl_compare` (~42 tokens)

Compare 2-5 services side by side. Returns scores, latency, uptime, and a recommendation.

Input parameters:

- `ids` (array, required): Service UUIDs to compare

### `prowl_alternatives` (~55 tokens)

Find alternative services in the same category as a given service. Useful for fallback options.

Input parameters:

- `limit` (integer): Max results (default 10)
- `service_id` (string, required): Service UUID to find alternatives for

### `prowl_audit` (~44 tokens)

Get a full ASO audit report: score breakdown, issues, benchmark readiness, latency, uptime, and action plan.

Input parameters:

- `service_id` (string, required): Service UUID

### `prowl_feedback` (~56 tokens)

Report success or failure after using a service. This improves scores for all agents.

Input parameters:

- `details` (string): Additional context about the experience
- `outcome` (string, required): What happened
- `service_id` (string, required): Service UUID

### `prowl_batch_metrics` (~42 tokens)

Get basic metrics for multiple services in one call (up to 20). More efficient than individual lookups.

Input parameters:

- `ids` (array, required): Service UUIDs

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/opcastil11-mcp-prowl/mcp-prowl#diagnostics

## Score history

- 2026-08-03: 64
- 2026-08-02: 46
- 2026-08-01: 39
- 2026-07-31: 39
- 2026-07-30: 57
- 2026-07-29: 75
- 2026-07-28: 19
- 2026-07-27: 47

## Links

- npm package: https://www.npmjs.com/package/mcp-prowl
- Socket report: https://socket.dev/npm/package/mcp-prowl
- Changelog RSS feed: https://verifymcp.io/servers/opcastil11-mcp-prowl/mcp-prowl/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/opcastil11-mcp-prowl/mcp-prowl/changelog.json
- HTML version of this page: https://verifymcp.io/servers/opcastil11-mcp-prowl/mcp-prowl