io.github.opcastil11/mcp-prowl
NPM · MCP-PROWL · SCANNED SEP 25
Discover, evaluate, and compare SaaS APIs. Agent-verified scores and metrics.
Available components
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. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 95 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency19
- Repository check failed: the declared repository URL returned HTTP 404. See how to fix → View diagnostics → Fail
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 195 days ago).Pass
- Security-disclosure policy not yet verified: we couldn't inspect the source repository.Unverified
Schema Quality & AI Usability84
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 556 tokens (~55/item across 10 items; 9 tools + 1 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management83
- Stability observed for 25 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 9 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the io.github.opcastil11/mcp-prowl server?
io.github.opcastil11/mcp-prowl runs locally as an npm package, launched with npx -y mcp-prowl. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · mcp-prowl
claude mcp add opcastil11-mcp-prowl -- npx -y mcp-prowl
{
"mcpServers": {
"opcastil11-mcp-prowl": {
"command": "npx",
"args": [
"-y",
"mcp-prowl"
]
}
}
} {
"servers": {
"opcastil11-mcp-prowl": {
"command": "npx",
"args": [
"-y",
"mcp-prowl"
]
}
}
} codex mcp add opcastil11-mcp-prowl -- npx -y mcp-prowl
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"opcastil11-mcp-prowl": {
"type": "local",
"command": [
"npx",
"-y",
"mcp-prowl"
],
"enabled": true
}
}
} openclaw mcp add opcastil11-mcp-prowl --command npx --arg -y --arg mcp-prowl
mcp_servers:
opcastil11-mcp-prowl:
command: "npx"
args: ["-y", "mcp-prowl"] {
"McpServers": {
"opcastil11-mcp-prowl": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"mcp-prowl"
]
}
}
} assistant mcp add opcastil11-mcp-prowl -t stdio -c npx -a -y mcp-prowl
{
"mcpServers": {
"opcastil11-mcp-prowl": {
"command": "npx",
"args": [
"-y",
"mcp-prowl"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 24 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 77 to 80. That category is still filling its 30-day observation window: 23 days of observed history at the previous scan, 24 at this one. The score rises as the window fills, whether or not the server changes.
- 23 Sept 26 −3
- Stability: pass → 0.77 functional
- 22 Sept 26 0
- Stability: 0.97 → pass security
- 21 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 93 to 97. That category is still filling its 30-day observation window: 28 days of observed history at the previous scan, 29 at this one. The score rises as the window fills, whether or not the server changes.
- 18 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 83 to 87. That category is still filling its 30-day observation window: 25 days of observed history at the previous scan, 26 at this one. The score rises as the window fills, whether or not the server changes.
- 17 Sept 26 −2
- Stability: pass → 0.83 functional
- 16 Sept 26 0
- Stability: 0.97 → pass security
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 25 Sept 2026 · Analysed npm/mcp-prowl@0.1.1
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 95 packages
| Packages resolved | 95 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
prowl_alternatives ~55
Find alternative services in the same category as a given service. Useful for fallback options.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max results (default 10) |
| service_id | string | yes | Service UUID to find alternatives for |
No output schema declared.
No examples provided.
prowl_audit ~44
Get a full ASO audit report: score breakdown, issues, benchmark readiness, latency, uptime, and action plan.
| Name | Type | Req | Description |
|---|---|---|---|
| service_id | string | yes | Service UUID |
No output schema declared.
No examples provided.
prowl_batch_metrics ~42
Get basic metrics for multiple services in one call (up to 20). More efficient than individual lookups.
| Name | Type | Req | Description |
|---|---|---|---|
| ids | array | yes | Service UUIDs |
No output schema declared.
No examples provided.
prowl_compare ~42
Compare 2-5 services side by side. Returns scores, latency, uptime, and a recommendation.
| Name | Type | Req | Description |
|---|---|---|---|
| ids | array | yes | Service UUIDs to compare |
No output schema declared.
No examples provided.
prowl_discover ~141
Search the Prowl service directory by keyword, category, or filters. Returns ranked SaaS APIs with scores.
| Name | Type | Req | Description |
|---|---|---|---|
| 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 |
No output schema declared.
No examples provided.
prowl_feedback ~56
Report success or failure after using a service. This improves scores for all agents.
| Name | Type | Req | Description |
|---|---|---|---|
| details | string | – | Additional context about the experience |
| outcome | string | yes | What happened |
| service_id | string | yes | Service UUID |
No output schema declared.
No examples provided.
prowl_get_service ~40
Look up a specific service by its URL-friendly slug (e.g. 'stripe', 'openai').
| Name | Type | Req | Description |
|---|---|---|---|
| slug | string | yes | Service slug |
No output schema declared.
No examples provided.
prowl_metrics ~40
Get ASO score and verification status for a service. Use this to evaluate if a service is reliable.
| Name | Type | Req | Description |
|---|---|---|---|
| service_id | string | yes | Service UUID |
No output schema declared.
No examples provided.
prowl_search ~69
Natural language search for services. Use when the user describes what they need rather than naming a specific API.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max results (default 10) |
| query | string | yes | Natural language query (e.g. 'find me a geocoding API with a free tier') |
No output schema declared.
No examples provided.
What is the io.github.opcastil11/mcp-prowl server?
io.github.opcastil11/mcp-prowl is listed in the public MCP registry as io.github.opcastil11/mcp-prowl. Discover, evaluate, and compare SaaS APIs. Agent-verified scores and metrics. This page covers its npm package (mcp-prowl).
Is the io.github.opcastil11/mcp-prowl server safe to use?
io.github.opcastil11/mcp-prowl scores 78 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 25 September 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 io.github.opcastil11/mcp-prowl server expose?
io.github.opcastil11/mcp-prowl exposes 9 tools: prowl_discover, prowl_search, prowl_get_service, prowl_metrics, prowl_compare, and 4 more. Their descriptions and schemas cost roughly 529 tokens of context every time the server is loaded.
Is the io.github.opcastil11/mcp-prowl server still maintained?
io.github.opcastil11/mcp-prowl is still listed as active in the MCP registry. We last reached this channel on 25 September 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 io.github.opcastil11/mcp-prowl server under?
io.github.opcastil11/mcp-prowl declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.